Added meta operation.

.golangci.json

@@ -86,7 +86,6 @@
           "emptyFallthrough",
           "equalFold",
           "flagName",
-          "ifElseChain",
           "indexAlloc",
           "initClause",
           "methodExprCall",
@@ -106,6 +105,9 @@
           "unnecessaryBlock",
           "weakCond",
           "yodaStyleExpr"
+        ],
+        "disabled-checks": [
+          "ifElseChain"
         ]
       },
       "revive": {

.vscode/tasks.json

@@ -6,7 +6,7 @@
 			"label": "go: build workspace",
 			"command": "build",
 			"options": {
-				"env": {				
+				"env": {
 					"CGO_ENABLED": "0"
 				},
 				"cwd": "${workspaceFolder}/bin",
@@ -18,7 +18,6 @@
 				"$go"
 			],
 			"group": "build",
-			
 		},
 		{
 			"type": "go",
@@ -81,6 +80,12 @@
 				"kind": "test",
 				"isDefault": false
 			}
+		},
+		{
+			"type": "shell",
+			"label": "Make Release",
+			"problemMatcher": [],
+			"command": "sh ${workspaceFolder}/make_release.sh",
 		}
 	]
 }

README.md

@@ -13,6 +13,8 @@ Both share the same core architecture and provide dynamic data querying, relatio
 
 **🆕 New in v2.1**: RestHeadSpec (HeaderSpec) - Header-based REST API with lifecycle hooks, cursor pagination, and advanced filtering.
 
+**🆕 New in v3.0**: Explicit route registration - Routes are now created per registered model for better flexibility and control. OPTIONS method support with full CORS headers for cross-origin requests.
+
 ![slogan](./generated_slogan.webp)
 
 ## Table of Contents
@@ -65,6 +67,12 @@ Both share the same core architecture and provide dynamic data querying, relatio
 - **🆕 Advanced Filtering**: Field filters, search operators, AND/OR logic, and custom SQL
 - **🆕 Base64 Encoding**: Support for base64-encoded header values
 
+### Routing & CORS (v3.0+)
+- **🆕 Explicit Route Registration**: Routes created per registered model instead of dynamic lookups
+- **🆕 OPTIONS Method Support**: Full OPTIONS method support returning model metadata
+- **🆕 CORS Headers**: Comprehensive CORS support with all HeadSpec headers allowed
+- **🆕 Better Route Control**: Customize routes per model with more flexibility
+
 ## API Structure
 
 ### URL Patterns
@@ -123,13 +131,15 @@ import "github.com/gorilla/mux"
 // Create handler
 handler := restheadspec.NewHandlerWithGORM(db)
 
-// Register models using schema.table format
+// IMPORTANT: Register models BEFORE setting up routes
+// Routes are created explicitly for each registered model
 handler.Registry.RegisterModel("public.users", &User{})
 handler.Registry.RegisterModel("public.posts", &Post{})
 
-// Setup routes
+// Setup routes (creates explicit routes for each registered model)
+// This replaces the old dynamic route lookup approach
 router := mux.NewRouter()
-restheadspec.SetupMuxRoutes(router, handler)
+restheadspec.SetupMuxRoutes(router, handler, nil)
 
 // Start server
 http.ListenAndServe(":8080", router)
@@ -172,6 +182,42 @@ restheadspec.SetupMuxRoutes(router, handler)
 
 For complete header documentation, see [pkg/restheadspec/HEADERS.md](pkg/restheadspec/HEADERS.md).
 
+### CORS & OPTIONS Support
+
+ResolveSpec and RestHeadSpec include comprehensive CORS support for cross-origin requests:
+
+**OPTIONS Method**:
+```http
+OPTIONS /public/users HTTP/1.1
+```
+Returns metadata with appropriate CORS headers:
+```http
+Access-Control-Allow-Origin: *
+Access-Control-Allow-Methods: GET, POST, OPTIONS
+Access-Control-Allow-Headers: Content-Type, Authorization, X-Select-Fields, X-FieldFilter-*, ...
+Access-Control-Max-Age: 86400
+Access-Control-Allow-Credentials: true
+```
+
+**Key Features**:
+- OPTIONS returns model metadata (same as GET metadata endpoint)
+- All HTTP methods include CORS headers automatically
+- OPTIONS requests don't require authentication (CORS preflight)
+- Supports all HeadSpec custom headers (`X-Select-Fields`, `X-FieldFilter-*`, etc.)
+- 24-hour max age to reduce preflight requests
+
+**Configuration**:
+```go
+import "github.com/bitechdev/ResolveSpec/pkg/common"
+
+// Get default CORS config
+corsConfig := common.DefaultCORSConfig()
+
+// Customize if needed
+corsConfig.AllowedOrigins = []string{"https://example.com"}
+corsConfig.AllowedMethods = []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"}
+```
+
 ### Lifecycle Hooks
 
 RestHeadSpec supports lifecycle hooks for all CRUD operations:
@@ -687,15 +733,16 @@ handler := resolvespec.NewHandler(dbAdapter, registry)
 ```go
 import "github.com/gorilla/mux"
 
-// Backward compatible way
-router := mux.NewRouter()  
-resolvespec.SetupRoutes(router, handler)
+// Register models first
+handler.Registry.RegisterModel("public.users", &User{})
+handler.Registry.RegisterModel("public.posts", &Post{})
 
-// Or manually:
-router.HandleFunc("/{schema}/{entity}", func(w http.ResponseWriter, r *http.Request) {
-    vars := mux.Vars(r)
-    handler.Handle(w, r, vars)
-}).Methods("POST")
+// Setup routes - creates explicit routes for each model
+router := mux.NewRouter()
+resolvespec.SetupMuxRoutes(router, handler, nil)
+
+// Routes created: /public/users, /public/posts, etc.
+// Each route includes GET, POST, and OPTIONS methods with CORS support
 ```
 
 #### Gin (Custom Integration)
@@ -950,7 +997,28 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 
 ## What's New
 
-### v2.1 (Latest)
+### v3.0 (Latest - December 2025)
+
+**Explicit Route Registration (🆕)**:
+- **Breaking Change**: Routes are now created explicitly for each registered model
+- **Better Control**: Customize routes per model with more flexibility
+- **Registration Order**: Models must be registered BEFORE calling SetupMuxRoutes/SetupBunRouterRoutes
+- **Benefits**: More flexible routing, easier to add custom routes per model, better performance
+
+**OPTIONS Method & CORS Support (🆕)**:
+- **OPTIONS Endpoint**: Full OPTIONS method support for CORS preflight requests
+- **Metadata Response**: OPTIONS returns model metadata (same as GET /metadata)
+- **CORS Headers**: Comprehensive CORS headers on all responses
+- **Header Support**: All HeadSpec custom headers (`X-Select-Fields`, `X-FieldFilter-*`, etc.) allowed
+- **No Auth on OPTIONS**: CORS preflight requests don't require authentication
+- **Configurable**: Customize CORS settings via `common.CORSConfig`
+
+**Migration Notes**:
+- Update your code to register models BEFORE calling SetupMuxRoutes/SetupBunRouterRoutes
+- Routes like `/public/users` are now created per registered model instead of using dynamic `/{schema}/{entity}` pattern
+- This is a **breaking change** but provides better control and flexibility
+
+### v2.1
 
 **Recursive CRUD Handler (🆕 Nov 11, 2025)**:
 - **Nested Object Graphs**: Automatically handle complex object hierarchies with parent-child relationships

cmd/testserver/main.go

@@ -47,8 +47,8 @@ func main() {
 		handler.RegisterModel("public", modelNames[i], model)
 	}
 
-	// Setup routes using new SetupMuxRoutes function
-	resolvespec.SetupMuxRoutes(r, handler)
+	// Setup routes using new SetupMuxRoutes function (without authentication)
+	resolvespec.SetupMuxRoutes(r, handler, nil)
 
 	// Start server
 	logger.Info("Starting server on :8080")

go.mod

@@ -19,7 +19,10 @@ require (
 )
 
 require (
+	github.com/bradfitz/gomemcache v0.0.0-20250403215159-8d39553ac7cf // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/glebarez/go-sqlite v1.21.2 // indirect
 	github.com/google/uuid v1.6.0 // indirect
@@ -30,6 +33,7 @@ require (
 	github.com/ncruces/go-strftime v0.1.9 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/puzpuzpuz/xsync/v3 v3.5.1 // indirect
+	github.com/redis/go-redis/v9 v9.17.1 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.0 // indirect

go.sum

@@ -1,6 +1,12 @@
+github.com/bradfitz/gomemcache v0.0.0-20250403215159-8d39553ac7cf h1:TqhNAT4zKbTdLa62d2HDBFdvgSbIGB3eJE8HqhgiL9I=
+github.com/bradfitz/gomemcache v0.0.0-20250403215159-8d39553ac7cf/go.mod h1:r5xuitiExdLAJ09PR7vBVENGvp4ZuTBeWTGtxuX3K+c=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/glebarez/go-sqlite v1.21.2 h1:3a6LFC4sKahUunAmynQKLZceZCOzUthkRkEAl9gAXWo=
@@ -31,6 +37,8 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/puzpuzpuz/xsync/v3 v3.5.1 h1:GJYJZwO6IdxN/IKbneznS6yPkVC+c3zyY/j19c++5Fg=
 github.com/puzpuzpuz/xsync/v3 v3.5.1/go.mod h1:VjzYrABPabuM4KyBh1Ftq6u8nhwY5tBPKP9jpmh0nnA=
+github.com/redis/go-redis/v9 v9.17.1 h1:7tl732FjYPRT9H9aNfyTwKg9iTETjWjGKEJ2t/5iWTs=
+github.com/redis/go-redis/v9 v9.17.1/go.mod h1:u410H11HMLoB+TP67dz8rL9s6QW2j76l0//kSOd3370=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=

pkg/cache/README.md

@@ -0,0 +1,340 @@
+# Cache Package
+
+A flexible, provider-based caching library for Go that supports multiple backend storage systems including in-memory, Redis, and Memcache.
+
+## Features
+
+- **Multiple Providers**: Support for in-memory, Redis, and Memcache backends
+- **Pluggable Architecture**: Easy to add custom cache providers
+- **Type-Safe API**: Automatic JSON serialization/deserialization
+- **TTL Support**: Configurable time-to-live for cache entries
+- **Context-Aware**: All operations support Go contexts
+- **Statistics**: Built-in cache statistics and monitoring
+- **Pattern Deletion**: Delete keys by pattern (Redis)
+- **Lazy Loading**: GetOrSet pattern for easy cache-aside implementation
+
+## Installation
+
+```bash
+go get github.com/bitechdev/ResolveSpec/pkg/cache
+```
+
+For Redis support:
+```bash
+go get github.com/redis/go-redis/v9
+```
+
+For Memcache support:
+```bash
+go get github.com/bradfitz/gomemcache/memcache
+```
+
+## Quick Start
+
+### In-Memory Cache
+
+```go
+package main
+
+import (
+    "context"
+    "time"
+    "github.com/bitechdev/ResolveSpec/pkg/cache"
+)
+
+func main() {
+    // Initialize with in-memory provider
+    cache.UseMemory(&cache.Options{
+        DefaultTTL: 5 * time.Minute,
+        MaxSize:    10000,
+    })
+    defer cache.Close()
+
+    ctx := context.Background()
+    c := cache.GetDefaultCache()
+
+    // Store a value
+    type User struct {
+        ID   int
+        Name string
+    }
+    user := User{ID: 1, Name: "John"}
+    c.Set(ctx, "user:1", user, 10*time.Minute)
+
+    // Retrieve a value
+    var retrieved User
+    c.Get(ctx, "user:1", &retrieved)
+}
+```
+
+### Redis Cache
+
+```go
+cache.UseRedis(&cache.RedisConfig{
+    Host:     "localhost",
+    Port:     6379,
+    Password: "",
+    DB:       0,
+    Options: &cache.Options{
+        DefaultTTL: 5 * time.Minute,
+    },
+})
+defer cache.Close()
+```
+
+### Memcache
+
+```go
+cache.UseMemcache(&cache.MemcacheConfig{
+    Servers: []string{"localhost:11211"},
+    Options: &cache.Options{
+        DefaultTTL: 5 * time.Minute,
+    },
+})
+defer cache.Close()
+```
+
+## API Reference
+
+### Core Methods
+
+#### Set
+```go
+Set(ctx context.Context, key string, value interface{}, ttl time.Duration) error
+```
+Stores a value in the cache with automatic JSON serialization.
+
+#### Get
+```go
+Get(ctx context.Context, key string, dest interface{}) error
+```
+Retrieves and deserializes a value from the cache.
+
+#### SetBytes / GetBytes
+```go
+SetBytes(ctx context.Context, key string, value []byte, ttl time.Duration) error
+GetBytes(ctx context.Context, key string) ([]byte, error)
+```
+Store and retrieve raw bytes without serialization.
+
+#### Delete
+```go
+Delete(ctx context.Context, key string) error
+```
+Removes a key from the cache.
+
+#### DeleteByPattern
+```go
+DeleteByPattern(ctx context.Context, pattern string) error
+```
+Removes all keys matching a pattern (Redis only).
+
+#### Clear
+```go
+Clear(ctx context.Context) error
+```
+Removes all items from the cache.
+
+#### Exists
+```go
+Exists(ctx context.Context, key string) bool
+```
+Checks if a key exists in the cache.
+
+#### GetOrSet
+```go
+GetOrSet(ctx context.Context, key string, dest interface{}, ttl time.Duration,
+         loader func() (interface{}, error)) error
+```
+Retrieves a value from cache, or loads and caches it if not found (lazy loading).
+
+#### Stats
+```go
+Stats(ctx context.Context) (*CacheStats, error)
+```
+Returns cache statistics including hits, misses, and key counts.
+
+## Provider Configuration
+
+### In-Memory Options
+
+```go
+&cache.Options{
+    DefaultTTL:     5 * time.Minute,  // Default expiration time
+    MaxSize:        10000,             // Maximum number of items
+    EvictionPolicy: "LRU",             // Eviction strategy (future)
+}
+```
+
+### Redis Configuration
+
+```go
+&cache.RedisConfig{
+    Host:     "localhost",
+    Port:     6379,
+    Password: "",         // Optional authentication
+    DB:       0,          // Database number
+    PoolSize: 10,         // Connection pool size
+    Options:  &cache.Options{
+        DefaultTTL: 5 * time.Minute,
+    },
+}
+```
+
+### Memcache Configuration
+
+```go
+&cache.MemcacheConfig{
+    Servers:      []string{"localhost:11211"},
+    MaxIdleConns: 2,
+    Timeout:      1 * time.Second,
+    Options: &cache.Options{
+        DefaultTTL: 5 * time.Minute,
+    },
+}
+```
+
+## Advanced Usage
+
+### Custom Provider
+
+```go
+// Create a custom provider instance
+memProvider := cache.NewMemoryProvider(&cache.Options{
+    DefaultTTL: 10 * time.Minute,
+    MaxSize:    500,
+})
+
+// Initialize with custom provider
+cache.Initialize(memProvider)
+```
+
+### Lazy Loading Pattern
+
+```go
+var data ExpensiveData
+err := c.GetOrSet(ctx, "expensive:key", &data, 10*time.Minute, func() (interface{}, error) {
+    // This expensive operation only runs if key is not in cache
+    return computeExpensiveData(), nil
+})
+```
+
+### Query API Cache
+
+The package includes specialized functions for caching query results:
+
+```go
+// Cache a query result
+api := "GetUsers"
+query := "SELECT * FROM users WHERE active = true"
+tablenames := "users"
+total := int64(150)
+
+cache.PutQueryAPICache(ctx, api, query, tablenames, total)
+
+// Retrieve cached query
+hash := cache.HashQueryAPICache(api, query)
+cachedQuery, err := cache.FetchQueryAPICache(ctx, hash)
+```
+
+## Provider Comparison
+
+| Feature | In-Memory | Redis | Memcache |
+|---------|-----------|-------|----------|
+| Persistence | No | Yes | No |
+| Distributed | No | Yes | Yes |
+| Pattern Delete | No | Yes | No |
+| Statistics | Full | Full | Limited |
+| Atomic Operations | Yes | Yes | Yes |
+| Max Item Size | Memory | 512MB | 1MB |
+
+## Best Practices
+
+1. **Use contexts**: Always pass context for cancellation and timeout control
+2. **Set appropriate TTLs**: Balance between freshness and performance
+3. **Handle errors**: Cache misses and errors should be handled gracefully
+4. **Monitor statistics**: Use Stats() to monitor cache performance
+5. **Clean up**: Always call Close() when shutting down
+6. **Pattern consistency**: Use consistent key naming patterns (e.g., "user:id:field")
+
+## Example: Complete Application
+
+```go
+package main
+
+import (
+    "context"
+    "log"
+    "time"
+    "github.com/bitechdev/ResolveSpec/pkg/cache"
+)
+
+type UserService struct {
+    cache *cache.Cache
+}
+
+func NewUserService() *UserService {
+    // Initialize with Redis in production, memory for testing
+    cache.UseRedis(&cache.RedisConfig{
+        Host: "localhost",
+        Port: 6379,
+        Options: &cache.Options{
+            DefaultTTL: 10 * time.Minute,
+        },
+    })
+
+    return &UserService{
+        cache: cache.GetDefaultCache(),
+    }
+}
+
+func (s *UserService) GetUser(ctx context.Context, userID int) (*User, error) {
+    var user User
+    cacheKey := fmt.Sprintf("user:%d", userID)
+
+    // Try to get from cache first
+    err := s.cache.GetOrSet(ctx, cacheKey, &user, 15*time.Minute, func() (interface{}, error) {
+        // Load from database if not in cache
+        return s.loadUserFromDB(userID)
+    })
+
+    if err != nil {
+        return nil, err
+    }
+
+    return &user, nil
+}
+
+func (s *UserService) InvalidateUser(ctx context.Context, userID int) error {
+    cacheKey := fmt.Sprintf("user:%d", userID)
+    return s.cache.Delete(ctx, cacheKey)
+}
+
+func main() {
+    service := NewUserService()
+    defer cache.Close()
+
+    ctx := context.Background()
+    user, err := service.GetUser(ctx, 123)
+    if err != nil {
+        log.Fatal(err)
+    }
+
+    log.Printf("User: %+v", user)
+}
+```
+
+## Performance Considerations
+
+- **In-Memory**: Fastest but limited by RAM and not distributed
+- **Redis**: Great for distributed systems, persistent, but network overhead
+- **Memcache**: Good for distributed caching, simpler than Redis but less features
+
+Choose based on your needs:
+- Single instance? Use in-memory
+- Need persistence or advanced features? Use Redis
+- Simple distributed cache? Use Memcache
+
+## License
+
+See repository license.

pkg/cache/cache.go

@@ -0,0 +1,76 @@
+package cache
+
+import (
+	"context"
+	"fmt"
+	"time"
+)
+
+var (
+	defaultCache *Cache
+)
+
+// Initialize initializes the cache with a provider.
+// If not called, the package will use an in-memory provider by default.
+func Initialize(provider Provider) {
+	defaultCache = NewCache(provider)
+}
+
+// UseMemory configures the cache to use in-memory storage.
+func UseMemory(opts *Options) error {
+	provider := NewMemoryProvider(opts)
+	defaultCache = NewCache(provider)
+	return nil
+}
+
+// UseRedis configures the cache to use Redis storage.
+func UseRedis(config *RedisConfig) error {
+	provider, err := NewRedisProvider(config)
+	if err != nil {
+		return fmt.Errorf("failed to initialize Redis provider: %w", err)
+	}
+	defaultCache = NewCache(provider)
+	return nil
+}
+
+// UseMemcache configures the cache to use Memcache storage.
+func UseMemcache(config *MemcacheConfig) error {
+	provider, err := NewMemcacheProvider(config)
+	if err != nil {
+		return fmt.Errorf("failed to initialize Memcache provider: %w", err)
+	}
+	defaultCache = NewCache(provider)
+	return nil
+}
+
+// GetDefaultCache returns the default cache instance.
+// Initializes with in-memory provider if not already initialized.
+func GetDefaultCache() *Cache {
+	if defaultCache == nil {
+		_ = UseMemory(&Options{
+			DefaultTTL: 5 * time.Minute,
+			MaxSize:    10000,
+		})
+	}
+	return defaultCache
+}
+
+// SetDefaultCache sets a custom cache instance as the default cache.
+// This is useful for testing or when you want to use a pre-configured cache instance.
+func SetDefaultCache(cache *Cache) {
+	defaultCache = cache
+}
+
+// GetStats returns cache statistics.
+func GetStats(ctx context.Context) (*CacheStats, error) {
+	cache := GetDefaultCache()
+	return cache.Stats(ctx)
+}
+
+// Close closes the cache and releases resources.
+func Close() error {
+	if defaultCache != nil {
+		return defaultCache.Close()
+	}
+	return nil
+}

pkg/cache/cache_manager.go

@@ -0,0 +1,147 @@
+package cache
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+)
+
+// Cache is the main cache manager that wraps a Provider.
+type Cache struct {
+	provider Provider
+}
+
+// NewCache creates a new cache manager with the specified provider.
+func NewCache(provider Provider) *Cache {
+	return &Cache{
+		provider: provider,
+	}
+}
+
+// Get retrieves and deserializes a value from the cache.
+func (c *Cache) Get(ctx context.Context, key string, dest interface{}) error {
+	data, exists := c.provider.Get(ctx, key)
+	if !exists {
+		return fmt.Errorf("key not found: %s", key)
+	}
+
+	if err := json.Unmarshal(data, dest); err != nil {
+		return fmt.Errorf("failed to deserialize: %w", err)
+	}
+
+	return nil
+}
+
+// GetBytes retrieves raw bytes from the cache.
+func (c *Cache) GetBytes(ctx context.Context, key string) ([]byte, error) {
+	data, exists := c.provider.Get(ctx, key)
+	if !exists {
+		return nil, fmt.Errorf("key not found: %s", key)
+	}
+	return data, nil
+}
+
+// Set serializes and stores a value in the cache with the specified TTL.
+func (c *Cache) Set(ctx context.Context, key string, value interface{}, ttl time.Duration) error {
+	data, err := json.Marshal(value)
+	if err != nil {
+		return fmt.Errorf("failed to serialize: %w", err)
+	}
+
+	return c.provider.Set(ctx, key, data, ttl)
+}
+
+// SetBytes stores raw bytes in the cache with the specified TTL.
+func (c *Cache) SetBytes(ctx context.Context, key string, value []byte, ttl time.Duration) error {
+	return c.provider.Set(ctx, key, value, ttl)
+}
+
+// Delete removes a key from the cache.
+func (c *Cache) Delete(ctx context.Context, key string) error {
+	return c.provider.Delete(ctx, key)
+}
+
+// DeleteByPattern removes all keys matching the pattern.
+func (c *Cache) DeleteByPattern(ctx context.Context, pattern string) error {
+	return c.provider.DeleteByPattern(ctx, pattern)
+}
+
+// Clear removes all items from the cache.
+func (c *Cache) Clear(ctx context.Context) error {
+	return c.provider.Clear(ctx)
+}
+
+// Exists checks if a key exists in the cache.
+func (c *Cache) Exists(ctx context.Context, key string) bool {
+	return c.provider.Exists(ctx, key)
+}
+
+// Stats returns statistics about the cache.
+func (c *Cache) Stats(ctx context.Context) (*CacheStats, error) {
+	return c.provider.Stats(ctx)
+}
+
+// Close closes the cache and releases any resources.
+func (c *Cache) Close() error {
+	return c.provider.Close()
+}
+
+// GetOrSet retrieves a value from cache, or sets it if it doesn't exist.
+// The loader function is called only if the key is not found in cache.
+func (c *Cache) GetOrSet(ctx context.Context, key string, dest interface{}, ttl time.Duration, loader func() (interface{}, error)) error {
+	// Try to get from cache first
+	err := c.Get(ctx, key, dest)
+	if err == nil {
+		return nil
+	}
+
+	// Load the value
+	value, err := loader()
+	if err != nil {
+		return fmt.Errorf("loader failed: %w", err)
+	}
+
+	// Store in cache
+	if err := c.Set(ctx, key, value, ttl); err != nil {
+		return fmt.Errorf("failed to cache value: %w", err)
+	}
+
+	// Populate dest with the loaded value
+	data, err := json.Marshal(value)
+	if err != nil {
+		return fmt.Errorf("failed to serialize loaded value: %w", err)
+	}
+
+	if err := json.Unmarshal(data, dest); err != nil {
+		return fmt.Errorf("failed to deserialize loaded value: %w", err)
+	}
+
+	return nil
+}
+
+// Remember is a convenience function that caches the result of a function call.
+// It's similar to GetOrSet but returns the value directly.
+func (c *Cache) Remember(ctx context.Context, key string, ttl time.Duration, loader func() (interface{}, error)) (interface{}, error) {
+	// Try to get from cache first as bytes
+	data, err := c.GetBytes(ctx, key)
+	if err == nil {
+		var result interface{}
+		if err := json.Unmarshal(data, &result); err == nil {
+			return result, nil
+		}
+	}
+
+	// Load the value
+	value, err := loader()
+	if err != nil {
+		return nil, fmt.Errorf("loader failed: %w", err)
+	}
+
+	// Store in cache
+	if err := c.Set(ctx, key, value, ttl); err != nil {
+		return nil, fmt.Errorf("failed to cache value: %w", err)
+	}
+
+	return value, nil
+}

pkg/cache/cache_test.go

@@ -0,0 +1,69 @@
+package cache
+
+import (
+	"context"
+	"testing"
+	"time"
+)
+
+func TestSetDefaultCache(t *testing.T) {
+	// Create a custom cache instance
+	provider := NewMemoryProvider(&Options{
+		DefaultTTL: 1 * time.Minute,
+		MaxSize:    50,
+	})
+	customCache := NewCache(provider)
+
+	// Set it as the default
+	SetDefaultCache(customCache)
+
+	// Verify it's now the default
+	retrievedCache := GetDefaultCache()
+	if retrievedCache != customCache {
+		t.Error("SetDefaultCache did not set the cache correctly")
+	}
+
+	// Test that we can use it
+	ctx := context.Background()
+	testKey := "test_key"
+	testValue := "test_value"
+
+	err := retrievedCache.Set(ctx, testKey, testValue, time.Minute)
+	if err != nil {
+		t.Fatalf("Failed to set value: %v", err)
+	}
+
+	var result string
+	err = retrievedCache.Get(ctx, testKey, &result)
+	if err != nil {
+		t.Fatalf("Failed to get value: %v", err)
+	}
+
+	if result != testValue {
+		t.Errorf("Expected %s, got %s", testValue, result)
+	}
+
+	// Clean up - reset to default
+	SetDefaultCache(nil)
+}
+
+func TestGetDefaultCacheInitialization(t *testing.T) {
+	// Reset to nil first
+	SetDefaultCache(nil)
+
+	// GetDefaultCache should auto-initialize
+	cache := GetDefaultCache()
+	if cache == nil {
+		t.Error("GetDefaultCache should auto-initialize, got nil")
+	}
+
+	// Should be usable
+	ctx := context.Background()
+	err := cache.Set(ctx, "test", "value", time.Minute)
+	if err != nil {
+		t.Errorf("Failed to use auto-initialized cache: %v", err)
+	}
+
+	// Clean up
+	SetDefaultCache(nil)
+}

pkg/cache/example_usage.go

@@ -0,0 +1,266 @@
+package cache
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"time"
+)
+
+// ExampleInMemoryCache demonstrates using the in-memory cache provider.
+func ExampleInMemoryCache() {
+	// Initialize with in-memory provider
+	err := UseMemory(&Options{
+		DefaultTTL: 5 * time.Minute,
+		MaxSize:    1000,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ctx := context.Background()
+
+	// Get the cache instance
+	cache := GetDefaultCache()
+
+	// Store a value
+	type User struct {
+		ID   int
+		Name string
+	}
+
+	user := User{ID: 1, Name: "John Doe"}
+	err = cache.Set(ctx, "user:1", user, 10*time.Minute)
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	// Retrieve a value
+	var retrieved User
+	err = cache.Get(ctx, "user:1", &retrieved)
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	fmt.Printf("Retrieved user: %+v\n", retrieved)
+
+	// Check if key exists
+	exists := cache.Exists(ctx, "user:1")
+	fmt.Printf("Key exists: %v\n", exists)
+
+	// Delete a key
+	err = cache.Delete(ctx, "user:1")
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	// Get statistics
+	stats, err := cache.Stats(ctx)
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+	fmt.Printf("Cache stats: %+v\n", stats)
+	_ = Close()
+}
+
+// ExampleRedisCache demonstrates using the Redis cache provider.
+func ExampleRedisCache() {
+	// Initialize with Redis provider
+	err := UseRedis(&RedisConfig{
+		Host:     "localhost",
+		Port:     6379,
+		Password: "", // Set if Redis requires authentication
+		DB:       0,
+		Options: &Options{
+			DefaultTTL: 5 * time.Minute,
+		},
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ctx := context.Background()
+
+	// Get the cache instance
+	cache := GetDefaultCache()
+
+	// Store raw bytes
+	data := []byte("Hello, Redis!")
+	err = cache.SetBytes(ctx, "greeting", data, 1*time.Hour)
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	// Retrieve raw bytes
+	retrieved, err := cache.GetBytes(ctx, "greeting")
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	fmt.Printf("Retrieved data: %s\n", string(retrieved))
+
+	// Clear all cache
+	err = cache.Clear(ctx)
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+	_ = Close()
+}
+
+// ExampleMemcacheCache demonstrates using the Memcache cache provider.
+func ExampleMemcacheCache() {
+	// Initialize with Memcache provider
+	err := UseMemcache(&MemcacheConfig{
+		Servers: []string{"localhost:11211"},
+		Options: &Options{
+			DefaultTTL: 5 * time.Minute,
+		},
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ctx := context.Background()
+
+	// Get the cache instance
+	cache := GetDefaultCache()
+
+	// Store a value
+	type Product struct {
+		ID    int
+		Name  string
+		Price float64
+	}
+
+	product := Product{ID: 100, Name: "Widget", Price: 29.99}
+	err = cache.Set(ctx, "product:100", product, 30*time.Minute)
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	// Retrieve a value
+	var retrieved Product
+	err = cache.Get(ctx, "product:100", &retrieved)
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	fmt.Printf("Retrieved product: %+v\n", retrieved)
+	_ = Close()
+}
+
+// ExampleGetOrSet demonstrates the GetOrSet pattern for lazy loading.
+func ExampleGetOrSet() {
+	err := UseMemory(&Options{
+		DefaultTTL: 5 * time.Minute,
+		MaxSize:    1000,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ctx := context.Background()
+	cache := GetDefaultCache()
+
+	type ExpensiveData struct {
+		Result string
+	}
+
+	var data ExpensiveData
+	err = cache.GetOrSet(ctx, "expensive:computation", &data, 10*time.Minute, func() (interface{}, error) {
+		// This expensive operation only runs if the key is not in cache
+		fmt.Println("Computing expensive result...")
+		time.Sleep(1 * time.Second)
+		return ExpensiveData{Result: "computed value"}, nil
+	})
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	fmt.Printf("Data: %+v\n", data)
+
+	// Second call will use cached value
+	err = cache.GetOrSet(ctx, "expensive:computation", &data, 10*time.Minute, func() (interface{}, error) {
+		fmt.Println("This won't be called!")
+		return ExpensiveData{Result: "new value"}, nil
+	})
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	fmt.Printf("Cached data: %+v\n", data)
+	_ = Close()
+}
+
+// ExampleCustomProvider demonstrates using a custom provider.
+func ExampleCustomProvider() {
+	// Create a custom provider
+	memProvider := NewMemoryProvider(&Options{
+		DefaultTTL: 10 * time.Minute,
+		MaxSize:    500,
+	})
+
+	// Initialize with custom provider
+	Initialize(memProvider)
+
+	ctx := context.Background()
+	cache := GetDefaultCache()
+
+	// Use the cache
+	err := cache.SetBytes(ctx, "key", []byte("value"), 5*time.Minute)
+	if err != nil {
+		_ = Close()
+		log.Fatal(err)
+	}
+
+	// Clean expired items (memory provider specific)
+	if mp, ok := cache.provider.(*MemoryProvider); ok {
+		count := mp.CleanExpired(ctx)
+		fmt.Printf("Cleaned %d expired items\n", count)
+	}
+	_ = Close()
+}
+
+// ExampleDeleteByPattern demonstrates pattern-based deletion (Redis only).
+func ExampleDeleteByPattern() {
+	err := UseRedis(&RedisConfig{
+		Host: "localhost",
+		Port: 6379,
+		Options: &Options{
+			DefaultTTL: 5 * time.Minute,
+		},
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ctx := context.Background()
+	cache := GetDefaultCache()
+
+	// Store multiple keys with a pattern
+	_ = cache.SetBytes(ctx, "user:1:profile", []byte("profile1"), 10*time.Minute)
+	_ = cache.SetBytes(ctx, "user:2:profile", []byte("profile2"), 10*time.Minute)
+	_ = cache.SetBytes(ctx, "user:1:settings", []byte("settings1"), 10*time.Minute)
+
+	// Delete all keys matching pattern (Redis glob pattern)
+	err = cache.DeleteByPattern(ctx, "user:*:profile")
+	if err != nil {
+		_ = Close()
+		log.Print(err)
+		return
+	}
+
+	fmt.Println("Deleted all user profile keys")
+	_ = Close()
+}

pkg/cache/provider.go

@@ -0,0 +1,57 @@
+package cache
+
+import (
+	"context"
+	"time"
+)
+
+// Provider defines the interface that all cache providers must implement.
+type Provider interface {
+	// Get retrieves a value from the cache by key.
+	// Returns nil, false if key doesn't exist or is expired.
+	Get(ctx context.Context, key string) ([]byte, bool)
+
+	// Set stores a value in the cache with the specified TTL.
+	// If ttl is 0, the item never expires.
+	Set(ctx context.Context, key string, value []byte, ttl time.Duration) error
+
+	// Delete removes a key from the cache.
+	Delete(ctx context.Context, key string) error
+
+	// DeleteByPattern removes all keys matching the pattern.
+	// Pattern syntax depends on the provider implementation.
+	DeleteByPattern(ctx context.Context, pattern string) error
+
+	// Clear removes all items from the cache.
+	Clear(ctx context.Context) error
+
+	// Exists checks if a key exists in the cache.
+	Exists(ctx context.Context, key string) bool
+
+	// Close closes the provider and releases any resources.
+	Close() error
+
+	// Stats returns statistics about the cache provider.
+	Stats(ctx context.Context) (*CacheStats, error)
+}
+
+// CacheStats contains cache statistics.
+type CacheStats struct {
+	Hits          int64          `json:"hits"`
+	Misses        int64          `json:"misses"`
+	Keys          int64          `json:"keys"`
+	ProviderType  string         `json:"provider_type"`
+	ProviderStats map[string]any `json:"provider_stats,omitempty"`
+}
+
+// Options contains configuration options for cache providers.
+type Options struct {
+	// DefaultTTL is the default time-to-live for cache items.
+	DefaultTTL time.Duration
+
+	// MaxSize is the maximum number of items (for in-memory provider).
+	MaxSize int
+
+	// EvictionPolicy determines how items are evicted (LRU, LFU, etc).
+	EvictionPolicy string
+}

pkg/cache/provider_memcache.go

@@ -0,0 +1,144 @@
+package cache
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/bradfitz/gomemcache/memcache"
+)
+
+// MemcacheProvider is a Memcache implementation of the Provider interface.
+type MemcacheProvider struct {
+	client  *memcache.Client
+	options *Options
+}
+
+// MemcacheConfig contains Memcache-specific configuration.
+type MemcacheConfig struct {
+	// Servers is a list of memcache server addresses (e.g., "localhost:11211")
+	Servers []string
+
+	// MaxIdleConns is the maximum number of idle connections (default: 2)
+	MaxIdleConns int
+
+	// Timeout for connection operations (default: 1 second)
+	Timeout time.Duration
+
+	// Options contains general cache options
+	Options *Options
+}
+
+// NewMemcacheProvider creates a new Memcache cache provider.
+func NewMemcacheProvider(config *MemcacheConfig) (*MemcacheProvider, error) {
+	if config == nil {
+		config = &MemcacheConfig{
+			Servers: []string{"localhost:11211"},
+		}
+	}
+
+	if len(config.Servers) == 0 {
+		config.Servers = []string{"localhost:11211"}
+	}
+
+	if config.MaxIdleConns == 0 {
+		config.MaxIdleConns = 2
+	}
+
+	if config.Timeout == 0 {
+		config.Timeout = 1 * time.Second
+	}
+
+	if config.Options == nil {
+		config.Options = &Options{
+			DefaultTTL: 5 * time.Minute,
+		}
+	}
+
+	client := memcache.New(config.Servers...)
+	client.MaxIdleConns = config.MaxIdleConns
+	client.Timeout = config.Timeout
+
+	// Test connection
+	if err := client.Ping(); err != nil {
+		return nil, fmt.Errorf("failed to connect to Memcache: %w", err)
+	}
+
+	return &MemcacheProvider{
+		client:  client,
+		options: config.Options,
+	}, nil
+}
+
+// Get retrieves a value from the cache by key.
+func (m *MemcacheProvider) Get(ctx context.Context, key string) ([]byte, bool) {
+	item, err := m.client.Get(key)
+	if err == memcache.ErrCacheMiss {
+		return nil, false
+	}
+	if err != nil {
+		return nil, false
+	}
+	return item.Value, true
+}
+
+// Set stores a value in the cache with the specified TTL.
+func (m *MemcacheProvider) Set(ctx context.Context, key string, value []byte, ttl time.Duration) error {
+	if ttl == 0 {
+		ttl = m.options.DefaultTTL
+	}
+
+	item := &memcache.Item{
+		Key:        key,
+		Value:      value,
+		Expiration: int32(ttl.Seconds()),
+	}
+
+	return m.client.Set(item)
+}
+
+// Delete removes a key from the cache.
+func (m *MemcacheProvider) Delete(ctx context.Context, key string) error {
+	err := m.client.Delete(key)
+	if err == memcache.ErrCacheMiss {
+		return nil
+	}
+	return err
+}
+
+// DeleteByPattern removes all keys matching the pattern.
+// Note: Memcache does not support pattern-based deletion natively.
+// This is a no-op for memcache and returns an error.
+func (m *MemcacheProvider) DeleteByPattern(ctx context.Context, pattern string) error {
+	return fmt.Errorf("pattern-based deletion is not supported by Memcache")
+}
+
+// Clear removes all items from the cache.
+func (m *MemcacheProvider) Clear(ctx context.Context) error {
+	return m.client.FlushAll()
+}
+
+// Exists checks if a key exists in the cache.
+func (m *MemcacheProvider) Exists(ctx context.Context, key string) bool {
+	_, err := m.client.Get(key)
+	return err == nil
+}
+
+// Close closes the provider and releases any resources.
+func (m *MemcacheProvider) Close() error {
+	// Memcache client doesn't have a close method
+	return nil
+}
+
+// Stats returns statistics about the cache provider.
+// Note: Memcache provider returns limited statistics.
+func (m *MemcacheProvider) Stats(ctx context.Context) (*CacheStats, error) {
+	stats := &CacheStats{
+		ProviderType: "memcache",
+		ProviderStats: map[string]any{
+			"note": "Memcache does not provide detailed statistics through the standard client",
+		},
+	}
+
+	return stats, nil
+}

pkg/cache/provider_memory.go

@@ -0,0 +1,226 @@
+package cache
+
+import (
+	"context"
+	"fmt"
+	"regexp"
+	"sync"
+	"time"
+)
+
+// memoryItem represents a cached item in memory.
+type memoryItem struct {
+	Value      []byte
+	Expiration time.Time
+	LastAccess time.Time
+	HitCount   int64
+}
+
+// isExpired checks if the item has expired.
+func (m *memoryItem) isExpired() bool {
+	if m.Expiration.IsZero() {
+		return false
+	}
+	return time.Now().After(m.Expiration)
+}
+
+// MemoryProvider is an in-memory implementation of the Provider interface.
+type MemoryProvider struct {
+	mu      sync.RWMutex
+	items   map[string]*memoryItem
+	options *Options
+	hits    int64
+	misses  int64
+}
+
+// NewMemoryProvider creates a new in-memory cache provider.
+func NewMemoryProvider(opts *Options) *MemoryProvider {
+	if opts == nil {
+		opts = &Options{
+			DefaultTTL: 5 * time.Minute,
+			MaxSize:    10000,
+		}
+	}
+
+	return &MemoryProvider{
+		items:   make(map[string]*memoryItem),
+		options: opts,
+	}
+}
+
+// Get retrieves a value from the cache by key.
+func (m *MemoryProvider) Get(ctx context.Context, key string) ([]byte, bool) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	item, exists := m.items[key]
+	if !exists {
+		m.misses++
+		return nil, false
+	}
+
+	if item.isExpired() {
+		delete(m.items, key)
+		m.misses++
+		return nil, false
+	}
+
+	item.LastAccess = time.Now()
+	item.HitCount++
+	m.hits++
+
+	return item.Value, true
+}
+
+// Set stores a value in the cache with the specified TTL.
+func (m *MemoryProvider) Set(ctx context.Context, key string, value []byte, ttl time.Duration) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	if ttl == 0 {
+		ttl = m.options.DefaultTTL
+	}
+
+	var expiration time.Time
+	if ttl > 0 {
+		expiration = time.Now().Add(ttl)
+	}
+
+	// Check max size and evict if necessary
+	if m.options.MaxSize > 0 && len(m.items) >= m.options.MaxSize {
+		if _, exists := m.items[key]; !exists {
+			m.evictOne()
+		}
+	}
+
+	m.items[key] = &memoryItem{
+		Value:      value,
+		Expiration: expiration,
+		LastAccess: time.Now(),
+	}
+
+	return nil
+}
+
+// Delete removes a key from the cache.
+func (m *MemoryProvider) Delete(ctx context.Context, key string) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	delete(m.items, key)
+	return nil
+}
+
+// DeleteByPattern removes all keys matching the pattern.
+func (m *MemoryProvider) DeleteByPattern(ctx context.Context, pattern string) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	re, err := regexp.Compile(pattern)
+	if err != nil {
+		return fmt.Errorf("invalid pattern: %w", err)
+	}
+
+	for key := range m.items {
+		if re.MatchString(key) {
+			delete(m.items, key)
+		}
+	}
+
+	return nil
+}
+
+// Clear removes all items from the cache.
+func (m *MemoryProvider) Clear(ctx context.Context) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	m.items = make(map[string]*memoryItem)
+	m.hits = 0
+	m.misses = 0
+	return nil
+}
+
+// Exists checks if a key exists in the cache.
+func (m *MemoryProvider) Exists(ctx context.Context, key string) bool {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+
+	item, exists := m.items[key]
+	if !exists {
+		return false
+	}
+
+	return !item.isExpired()
+}
+
+// Close closes the provider and releases any resources.
+func (m *MemoryProvider) Close() error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	m.items = nil
+	return nil
+}
+
+// Stats returns statistics about the cache provider.
+func (m *MemoryProvider) Stats(ctx context.Context) (*CacheStats, error) {
+	m.mu.RLock()
+	defer m.mu.RUnlock()
+
+	// Clean expired items first
+	validKeys := 0
+	for _, item := range m.items {
+		if !item.isExpired() {
+			validKeys++
+		}
+	}
+
+	return &CacheStats{
+		Hits:         m.hits,
+		Misses:       m.misses,
+		Keys:         int64(validKeys),
+		ProviderType: "memory",
+		ProviderStats: map[string]any{
+			"capacity": m.options.MaxSize,
+		},
+	}, nil
+}
+
+// evictOne removes one item from the cache using LRU strategy.
+func (m *MemoryProvider) evictOne() {
+	var oldestKey string
+	var oldestTime time.Time
+
+	for key, item := range m.items {
+		if item.isExpired() {
+			delete(m.items, key)
+			return
+		}
+
+		if oldestKey == "" || item.LastAccess.Before(oldestTime) {
+			oldestKey = key
+			oldestTime = item.LastAccess
+		}
+	}
+
+	if oldestKey != "" {
+		delete(m.items, oldestKey)
+	}
+}
+
+// CleanExpired removes all expired items from the cache.
+func (m *MemoryProvider) CleanExpired(ctx context.Context) int {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	count := 0
+	for key, item := range m.items {
+		if item.isExpired() {
+			delete(m.items, key)
+			count++
+		}
+	}
+
+	return count
+}

pkg/cache/provider_redis.go

@@ -0,0 +1,185 @@
+package cache
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+// RedisProvider is a Redis implementation of the Provider interface.
+type RedisProvider struct {
+	client  *redis.Client
+	options *Options
+}
+
+// RedisConfig contains Redis-specific configuration.
+type RedisConfig struct {
+	// Host is the Redis server host (default: localhost)
+	Host string
+
+	// Port is the Redis server port (default: 6379)
+	Port int
+
+	// Password for Redis authentication (optional)
+	Password string
+
+	// DB is the Redis database number (default: 0)
+	DB int
+
+	// PoolSize is the maximum number of connections (default: 10)
+	PoolSize int
+
+	// Options contains general cache options
+	Options *Options
+}
+
+// NewRedisProvider creates a new Redis cache provider.
+func NewRedisProvider(config *RedisConfig) (*RedisProvider, error) {
+	if config == nil {
+		config = &RedisConfig{
+			Host: "localhost",
+			Port: 6379,
+			DB:   0,
+		}
+	}
+
+	if config.Host == "" {
+		config.Host = "localhost"
+	}
+	if config.Port == 0 {
+		config.Port = 6379
+	}
+	if config.PoolSize == 0 {
+		config.PoolSize = 10
+	}
+
+	if config.Options == nil {
+		config.Options = &Options{
+			DefaultTTL: 5 * time.Minute,
+		}
+	}
+
+	client := redis.NewClient(&redis.Options{
+		Addr:     fmt.Sprintf("%s:%d", config.Host, config.Port),
+		Password: config.Password,
+		DB:       config.DB,
+		PoolSize: config.PoolSize,
+	})
+
+	// Test connection
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	if err := client.Ping(ctx).Err(); err != nil {
+		return nil, fmt.Errorf("failed to connect to Redis: %w", err)
+	}
+
+	return &RedisProvider{
+		client:  client,
+		options: config.Options,
+	}, nil
+}
+
+// Get retrieves a value from the cache by key.
+func (r *RedisProvider) Get(ctx context.Context, key string) ([]byte, bool) {
+	val, err := r.client.Get(ctx, key).Bytes()
+	if err == redis.Nil {
+		return nil, false
+	}
+	if err != nil {
+		return nil, false
+	}
+	return val, true
+}
+
+// Set stores a value in the cache with the specified TTL.
+func (r *RedisProvider) Set(ctx context.Context, key string, value []byte, ttl time.Duration) error {
+	if ttl == 0 {
+		ttl = r.options.DefaultTTL
+	}
+
+	return r.client.Set(ctx, key, value, ttl).Err()
+}
+
+// Delete removes a key from the cache.
+func (r *RedisProvider) Delete(ctx context.Context, key string) error {
+	return r.client.Del(ctx, key).Err()
+}
+
+// DeleteByPattern removes all keys matching the pattern.
+func (r *RedisProvider) DeleteByPattern(ctx context.Context, pattern string) error {
+	iter := r.client.Scan(ctx, 0, pattern, 0).Iterator()
+	pipe := r.client.Pipeline()
+
+	count := 0
+	for iter.Next(ctx) {
+		pipe.Del(ctx, iter.Val())
+		count++
+
+		// Execute pipeline in batches of 100
+		if count%100 == 0 {
+			if _, err := pipe.Exec(ctx); err != nil {
+				return err
+			}
+			pipe = r.client.Pipeline()
+		}
+	}
+
+	if err := iter.Err(); err != nil {
+		return err
+	}
+
+	// Execute remaining commands
+	if count%100 != 0 {
+		_, err := pipe.Exec(ctx)
+		return err
+	}
+
+	return nil
+}
+
+// Clear removes all items from the cache.
+func (r *RedisProvider) Clear(ctx context.Context) error {
+	return r.client.FlushDB(ctx).Err()
+}
+
+// Exists checks if a key exists in the cache.
+func (r *RedisProvider) Exists(ctx context.Context, key string) bool {
+	result, err := r.client.Exists(ctx, key).Result()
+	if err != nil {
+		return false
+	}
+	return result > 0
+}
+
+// Close closes the provider and releases any resources.
+func (r *RedisProvider) Close() error {
+	return r.client.Close()
+}
+
+// Stats returns statistics about the cache provider.
+func (r *RedisProvider) Stats(ctx context.Context) (*CacheStats, error) {
+	info, err := r.client.Info(ctx, "stats", "keyspace").Result()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get Redis stats: %w", err)
+	}
+
+	dbSize, err := r.client.DBSize(ctx).Result()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get DB size: %w", err)
+	}
+
+	// Parse stats from INFO command
+	// This is a simplified version - you may want to parse more detailed stats
+	stats := &CacheStats{
+		Keys:         dbSize,
+		ProviderType: "redis",
+		ProviderStats: map[string]any{
+			"info": info,
+		},
+	}
+
+	return stats, nil
+}

pkg/cache/query_cache.go

@@ -0,0 +1,127 @@
+package cache
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+)
+
+// QueryCacheKey represents the components used to build a cache key for query total count
+type QueryCacheKey struct {
+	TableName      string                `json:"table_name"`
+	Filters        []common.FilterOption `json:"filters"`
+	Sort           []common.SortOption   `json:"sort"`
+	CustomSQLWhere string                `json:"custom_sql_where,omitempty"`
+	CustomSQLOr    string                `json:"custom_sql_or,omitempty"`
+	Expand         []ExpandOptionKey     `json:"expand,omitempty"`
+	Distinct       bool                  `json:"distinct,omitempty"`
+	CursorForward  string                `json:"cursor_forward,omitempty"`
+	CursorBackward string                `json:"cursor_backward,omitempty"`
+}
+
+// ExpandOptionKey represents expand options for cache key
+type ExpandOptionKey struct {
+	Relation string `json:"relation"`
+	Where    string `json:"where,omitempty"`
+}
+
+// BuildQueryCacheKey builds a cache key from query parameters for total count caching
+// This is used to cache the total count of records matching a query
+func BuildQueryCacheKey(tableName string, filters []common.FilterOption, sort []common.SortOption, customWhere, customOr string) string {
+	key := QueryCacheKey{
+		TableName:      tableName,
+		Filters:        filters,
+		Sort:           sort,
+		CustomSQLWhere: customWhere,
+		CustomSQLOr:    customOr,
+	}
+
+	// Serialize to JSON for consistent hashing
+	jsonData, err := json.Marshal(key)
+	if err != nil {
+		// Fallback to simple string concatenation if JSON fails
+		return hashString(fmt.Sprintf("%s_%v_%v_%s_%s", tableName, filters, sort, customWhere, customOr))
+	}
+
+	return hashString(string(jsonData))
+}
+
+// BuildExtendedQueryCacheKey builds a cache key for extended query options (restheadspec)
+// Includes expand, distinct, and cursor pagination options
+func BuildExtendedQueryCacheKey(tableName string, filters []common.FilterOption, sort []common.SortOption,
+	customWhere, customOr string, expandOpts []interface{}, distinct bool, cursorFwd, cursorBwd string) string {
+
+	key := QueryCacheKey{
+		TableName:      tableName,
+		Filters:        filters,
+		Sort:           sort,
+		CustomSQLWhere: customWhere,
+		CustomSQLOr:    customOr,
+		Distinct:       distinct,
+		CursorForward:  cursorFwd,
+		CursorBackward: cursorBwd,
+	}
+
+	// Convert expand options to cache key format
+	if len(expandOpts) > 0 {
+		key.Expand = make([]ExpandOptionKey, 0, len(expandOpts))
+		for _, exp := range expandOpts {
+			// Type assert to get the expand option fields we care about for caching
+			if expMap, ok := exp.(map[string]interface{}); ok {
+				expKey := ExpandOptionKey{}
+				if rel, ok := expMap["relation"].(string); ok {
+					expKey.Relation = rel
+				}
+				if where, ok := expMap["where"].(string); ok {
+					expKey.Where = where
+				}
+				key.Expand = append(key.Expand, expKey)
+			}
+		}
+		// Sort expand options for consistent hashing (already sorted by relation name above)
+	}
+
+	// Serialize to JSON for consistent hashing
+	jsonData, err := json.Marshal(key)
+	if err != nil {
+		// Fallback to simple string concatenation if JSON fails
+		return hashString(fmt.Sprintf("%s_%v_%v_%s_%s_%v_%v_%s_%s",
+			tableName, filters, sort, customWhere, customOr, expandOpts, distinct, cursorFwd, cursorBwd))
+	}
+
+	return hashString(string(jsonData))
+}
+
+// hashString computes SHA256 hash of a string
+func hashString(s string) string {
+	h := sha256.New()
+	h.Write([]byte(s))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+// GetQueryTotalCacheKey returns a formatted cache key for storing/retrieving total count
+func GetQueryTotalCacheKey(hash string) string {
+	return fmt.Sprintf("query_total:%s", hash)
+}
+
+// CachedTotal represents a cached total count
+type CachedTotal struct {
+	Total int `json:"total"`
+}
+
+// InvalidateCacheForTable removes all cached totals for a specific table
+// This should be called when data in the table changes (insert/update/delete)
+func InvalidateCacheForTable(ctx context.Context, tableName string) error {
+	cache := GetDefaultCache()
+
+	// Build a pattern to match all query totals for this table
+	// Note: This requires pattern matching support in the provider
+	pattern := fmt.Sprintf("query_total:*%s*", strings.ToLower(tableName))
+
+	return cache.DeleteByPattern(ctx, pattern)
+}

pkg/cache/query_cache_test.go

@@ -0,0 +1,151 @@
+package cache
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+)
+
+func TestBuildQueryCacheKey(t *testing.T) {
+	filters := []common.FilterOption{
+		{Column: "name", Operator: "eq", Value: "test"},
+		{Column: "age", Operator: "gt", Value: 25},
+	}
+	sorts := []common.SortOption{
+		{Column: "name", Direction: "asc"},
+	}
+
+	// Generate cache key
+	key1 := BuildQueryCacheKey("users", filters, sorts, "status = 'active'", "")
+
+	// Same parameters should generate same key
+	key2 := BuildQueryCacheKey("users", filters, sorts, "status = 'active'", "")
+
+	if key1 != key2 {
+		t.Errorf("Expected same cache keys for identical parameters, got %s and %s", key1, key2)
+	}
+
+	// Different parameters should generate different key
+	key3 := BuildQueryCacheKey("users", filters, sorts, "status = 'inactive'", "")
+
+	if key1 == key3 {
+		t.Errorf("Expected different cache keys for different parameters, got %s and %s", key1, key3)
+	}
+}
+
+func TestBuildExtendedQueryCacheKey(t *testing.T) {
+	filters := []common.FilterOption{
+		{Column: "name", Operator: "eq", Value: "test"},
+	}
+	sorts := []common.SortOption{
+		{Column: "name", Direction: "asc"},
+	}
+	expandOpts := []interface{}{
+		map[string]interface{}{
+			"relation": "posts",
+			"where":    "status = 'published'",
+		},
+	}
+
+	// Generate cache key
+	key1 := BuildExtendedQueryCacheKey("users", filters, sorts, "", "", expandOpts, false, "", "")
+
+	// Same parameters should generate same key
+	key2 := BuildExtendedQueryCacheKey("users", filters, sorts, "", "", expandOpts, false, "", "")
+
+	if key1 != key2 {
+		t.Errorf("Expected same cache keys for identical parameters")
+	}
+
+	// Different distinct value should generate different key
+	key3 := BuildExtendedQueryCacheKey("users", filters, sorts, "", "", expandOpts, true, "", "")
+
+	if key1 == key3 {
+		t.Errorf("Expected different cache keys for different distinct values")
+	}
+}
+
+func TestGetQueryTotalCacheKey(t *testing.T) {
+	hash := "abc123"
+	key := GetQueryTotalCacheKey(hash)
+
+	expected := "query_total:abc123"
+	if key != expected {
+		t.Errorf("Expected %s, got %s", expected, key)
+	}
+}
+
+func TestCachedTotalIntegration(t *testing.T) {
+	// Initialize cache with memory provider for testing
+	UseMemory(&Options{
+		DefaultTTL: 1 * time.Minute,
+		MaxSize:    100,
+	})
+
+	ctx := context.Background()
+
+	// Create test data
+	filters := []common.FilterOption{
+		{Column: "status", Operator: "eq", Value: "active"},
+	}
+	sorts := []common.SortOption{
+		{Column: "created_at", Direction: "desc"},
+	}
+
+	// Build cache key
+	cacheKeyHash := BuildQueryCacheKey("test_table", filters, sorts, "", "")
+	cacheKey := GetQueryTotalCacheKey(cacheKeyHash)
+
+	// Store a total count in cache
+	totalToCache := CachedTotal{Total: 42}
+	err := GetDefaultCache().Set(ctx, cacheKey, totalToCache, time.Minute)
+	if err != nil {
+		t.Fatalf("Failed to set cache: %v", err)
+	}
+
+	// Retrieve from cache
+	var cachedTotal CachedTotal
+	err = GetDefaultCache().Get(ctx, cacheKey, &cachedTotal)
+	if err != nil {
+		t.Fatalf("Failed to get from cache: %v", err)
+	}
+
+	if cachedTotal.Total != 42 {
+		t.Errorf("Expected total 42, got %d", cachedTotal.Total)
+	}
+
+	// Test cache miss
+	nonExistentKey := GetQueryTotalCacheKey("nonexistent")
+	var missedTotal CachedTotal
+	err = GetDefaultCache().Get(ctx, nonExistentKey, &missedTotal)
+	if err == nil {
+		t.Errorf("Expected error for cache miss, got nil")
+	}
+}
+
+func TestHashString(t *testing.T) {
+	input1 := "test string"
+	input2 := "test string"
+	input3 := "different string"
+
+	hash1 := hashString(input1)
+	hash2 := hashString(input2)
+	hash3 := hashString(input3)
+
+	// Same input should produce same hash
+	if hash1 != hash2 {
+		t.Errorf("Expected same hash for identical inputs")
+	}
+
+	// Different input should produce different hash
+	if hash1 == hash3 {
+		t.Errorf("Expected different hash for different inputs")
+	}
+
+	// Hash should be hex encoded SHA256 (64 characters)
+	if len(hash1) != 64 {
+		t.Errorf("Expected hash length of 64, got %d", len(hash1))
+	}
+}

pkg/common/adapters/database/bun.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"reflect"
 	"strings"
 
 	"github.com/uptrace/bun"
@@ -99,12 +100,20 @@ func (b *BunAdapter) RunInTransaction(ctx context.Context, fn func(common.Databa
 
 // BunSelectQuery implements SelectQuery for Bun
 type BunSelectQuery struct {
-	query      *bun.SelectQuery
-	db         bun.IDB // Store DB connection for count queries
-	hasModel   bool    // Track if Model() was called
-	schema     string  // Separated schema name
-	tableName  string  // Just the table name, without schema
-	tableAlias string
+	query            *bun.SelectQuery
+	db               bun.IDB // Store DB connection for count queries
+	hasModel         bool    // Track if Model() was called
+	schema           string  // Separated schema name
+	tableName        string  // Just the table name, without schema
+	tableAlias       string
+	deferredPreloads []deferredPreload // Preloads to execute as separate queries
+}
+
+// deferredPreload represents a preload that will be executed as a separate query
+// to avoid PostgreSQL identifier length limits
+type deferredPreload struct {
+	relation string
+	apply    []func(common.SelectQuery) common.SelectQuery
 }
 
 func (b *BunSelectQuery) Model(model interface{}) common.SelectQuery {
@@ -233,11 +242,99 @@ func (b *BunSelectQuery) Preload(relation string, conditions ...interface{}) com
 	return b
 }
 
+// // shortenAliasForPostgres shortens a table/relation alias if it would exceed PostgreSQL's 63-char limit
+// // when combined with typical column names
+// func shortenAliasForPostgres(relationPath string) (string, bool) {
+// 	// Convert relation path to the alias format Bun uses: dots become double underscores
+// 	// Also convert to lowercase and use snake_case as Bun does
+// 	parts := strings.Split(relationPath, ".")
+// 	alias := strings.ToLower(strings.Join(parts, "__"))
+
+// 	// PostgreSQL truncates identifiers to 63 chars
+// 	// If the alias + typical column name would exceed this, we need to shorten
+// 	// Reserve at least 30 chars for column names (e.g., "__rid_mastertype_hubtype")
+// 	const maxAliasLength = 30
+
+// 	if len(alias) > maxAliasLength {
+// 		// Create a shortened alias using a hash of the original
+// 		hash := md5.Sum([]byte(alias))
+// 		hashStr := hex.EncodeToString(hash[:])[:8]
+
+// 		// Keep first few chars of original for readability + hash
+// 		prefixLen := maxAliasLength - 9 // 9 = 1 underscore + 8 hash chars
+// 		if prefixLen > len(alias) {
+// 			prefixLen = len(alias)
+// 		}
+
+// 		shortened := alias[:prefixLen] + "_" + hashStr
+// 		logger.Debug("Shortened alias '%s' (%d chars) to '%s' (%d chars) to avoid PostgreSQL 63-char limit",
+// 			alias, len(alias), shortened, len(shortened))
+// 		return shortened, true
+// 	}
+
+// 	return alias, false
+// }
+
+// // estimateColumnAliasLength estimates the length of a column alias in a nested preload
+// // Bun creates aliases like: relationChain__columnName
+// func estimateColumnAliasLength(relationPath string, columnName string) int {
+// 	relationParts := strings.Split(relationPath, ".")
+// 	aliasChain := strings.ToLower(strings.Join(relationParts, "__"))
+// 	// Bun adds "__" between alias and column name
+// 	return len(aliasChain) + 2 + len(columnName)
+// }
+
 func (b *BunSelectQuery) PreloadRelation(relation string, apply ...func(common.SelectQuery) common.SelectQuery) common.SelectQuery {
+	// Check if this relation chain would create problematic long aliases
+	relationParts := strings.Split(relation, ".")
+	aliasChain := strings.ToLower(strings.Join(relationParts, "__"))
+
+	// PostgreSQL's identifier limit is 63 characters
+	const postgresIdentifierLimit = 63
+	const safeAliasLimit = 35 // Leave room for column names
+
+	// If the alias chain is too long, defer this preload to be executed as a separate query
+	if len(aliasChain) > safeAliasLimit {
+		logger.Info("Preload relation '%s' creates long alias chain '%s' (%d chars). "+
+			"Using separate query to avoid PostgreSQL %d-char identifier limit.",
+			relation, aliasChain, len(aliasChain), postgresIdentifierLimit)
+
+		// For nested preloads (e.g., "Parent.Child"), split into separate preloads
+		// This avoids the long concatenated alias
+		if len(relationParts) > 1 {
+			// Load first level normally: "Parent"
+			firstLevel := relationParts[0]
+			remainingPath := strings.Join(relationParts[1:], ".")
+
+			logger.Info("Splitting nested preload: loading '%s' first, then '%s' separately",
+				firstLevel, remainingPath)
+
+			// Apply the first level preload normally
+			b.query = b.query.Relation(firstLevel)
+
+			// Store the remaining nested preload to be executed after the main query
+			b.deferredPreloads = append(b.deferredPreloads, deferredPreload{
+				relation: relation,
+				apply:    apply,
+			})
+
+			return b
+		}
+
+		// Single level but still too long - just warn and continue
+		logger.Warn("Single-level preload '%s' has a very long name (%d chars). "+
+			"Consider renaming the field to avoid potential issues.",
+			relation, len(aliasChain))
+	}
+
+	// Normal preload handling
 	b.query = b.query.Relation(relation, func(sq *bun.SelectQuery) *bun.SelectQuery {
 		defer func() {
 			if r := recover(); r != nil {
-				logger.HandlePanic("BunSelectQuery.PreloadRelation", r)
+				err := logger.HandlePanic("BunSelectQuery.PreloadRelation", r)
+				if err != nil {
+					return
+				}
 			}
 		}()
 		if len(apply) == 0 {
@@ -306,7 +403,23 @@ func (b *BunSelectQuery) Scan(ctx context.Context, dest interface{}) (err error)
 	if dest == nil {
 		return fmt.Errorf("destination cannot be nil")
 	}
-	return b.query.Scan(ctx, dest)
+
+	// Execute the main query first
+	err = b.query.Scan(ctx, dest)
+	if err != nil {
+		return err
+	}
+
+	// Execute any deferred preloads
+	if len(b.deferredPreloads) > 0 {
+		err = b.executeDeferredPreloads(ctx, dest)
+		if err != nil {
+			logger.Warn("Failed to execute deferred preloads: %v", err)
+			// Don't fail the whole query, just log the warning
+		}
+	}
+
+	return nil
 }
 
 func (b *BunSelectQuery) ScanModel(ctx context.Context) (err error) {
@@ -319,7 +432,132 @@ func (b *BunSelectQuery) ScanModel(ctx context.Context) (err error) {
 		return fmt.Errorf("model is nil")
 	}
 
-	return b.query.Scan(ctx)
+	// Execute the main query first
+	err = b.query.Scan(ctx)
+	if err != nil {
+		return err
+	}
+
+	// Execute any deferred preloads
+	if len(b.deferredPreloads) > 0 {
+		model := b.query.GetModel()
+		err = b.executeDeferredPreloads(ctx, model.Value())
+		if err != nil {
+			logger.Warn("Failed to execute deferred preloads: %v", err)
+			// Don't fail the whole query, just log the warning
+		}
+	}
+
+	return nil
+}
+
+// executeDeferredPreloads executes preloads that were deferred to avoid PostgreSQL identifier length limits
+func (b *BunSelectQuery) executeDeferredPreloads(ctx context.Context, dest interface{}) error {
+	if len(b.deferredPreloads) == 0 {
+		return nil
+	}
+
+	for _, dp := range b.deferredPreloads {
+		err := b.executeSingleDeferredPreload(ctx, dest, dp)
+		if err != nil {
+			return fmt.Errorf("failed to execute deferred preload '%s': %w", dp.relation, err)
+		}
+	}
+
+	return nil
+}
+
+// executeSingleDeferredPreload executes a single deferred preload
+// For a relation like "Parent.Child", it:
+// 1. Finds all loaded Parent records in dest
+// 2. Loads Child records for those Parents using a separate query (loading only "Child", not "Parent.Child")
+// 3. Bun automatically assigns the Child records to the appropriate Parent.Child field
+func (b *BunSelectQuery) executeSingleDeferredPreload(ctx context.Context, dest interface{}, dp deferredPreload) error {
+	relationParts := strings.Split(dp.relation, ".")
+	if len(relationParts) < 2 {
+		return fmt.Errorf("deferred preload must be nested (e.g., 'Parent.Child'), got: %s", dp.relation)
+	}
+
+	// The parent relation that was already loaded
+	parentRelation := relationParts[0]
+	// The child relation we need to load
+	childRelation := strings.Join(relationParts[1:], ".")
+
+	logger.Debug("Executing deferred preload: loading '%s' on already-loaded '%s'", childRelation, parentRelation)
+
+	// Use reflection to access the parent relation field(s) in the loaded records
+	// Then load the child relation for those parent records
+	destValue := reflect.ValueOf(dest)
+	if destValue.Kind() == reflect.Ptr {
+		destValue = destValue.Elem()
+	}
+
+	// Handle both slice and single record
+	if destValue.Kind() == reflect.Slice {
+		// Iterate through each record in the slice
+		for i := 0; i < destValue.Len(); i++ {
+			record := destValue.Index(i)
+			if err := b.loadChildRelationForRecord(ctx, record, parentRelation, childRelation, dp.apply); err != nil {
+				logger.Warn("Failed to load child relation '%s' for record %d: %v", childRelation, i, err)
+				// Continue with other records
+			}
+		}
+	} else {
+		// Single record
+		if err := b.loadChildRelationForRecord(ctx, destValue, parentRelation, childRelation, dp.apply); err != nil {
+			return fmt.Errorf("failed to load child relation '%s': %w", childRelation, err)
+		}
+	}
+
+	return nil
+}
+
+// loadChildRelationForRecord loads a child relation for a single parent record
+func (b *BunSelectQuery) loadChildRelationForRecord(ctx context.Context, record reflect.Value, parentRelation, childRelation string, apply []func(common.SelectQuery) common.SelectQuery) error {
+	// Ensure we're working with the actual struct value, not a pointer
+	if record.Kind() == reflect.Ptr {
+		record = record.Elem()
+	}
+
+	// Get the parent relation field
+	parentField := record.FieldByName(parentRelation)
+	if !parentField.IsValid() {
+		// Parent relation field doesn't exist
+		logger.Debug("Parent relation field '%s' not found in record", parentRelation)
+		return nil
+	}
+
+	// Check if the parent field is nil (for pointer fields)
+	if parentField.Kind() == reflect.Ptr && parentField.IsNil() {
+		// Parent relation not loaded or nil, skip
+		logger.Debug("Parent relation field '%s' is nil, skipping child preload", parentRelation)
+		return nil
+	}
+
+	// Get the interface value to pass to Bun
+	parentValue := parentField.Interface()
+
+	// Load the child relation on the parent record
+	// This uses a shorter alias since we're only loading "Child", not "Parent.Child"
+	return b.db.NewSelect().
+		Model(parentValue).
+		Relation(childRelation, func(sq *bun.SelectQuery) *bun.SelectQuery {
+			// Apply any custom query modifications
+			if len(apply) > 0 {
+				wrapper := &BunSelectQuery{query: sq, db: b.db}
+				current := common.SelectQuery(wrapper)
+				for _, fn := range apply {
+					if fn != nil {
+						current = fn(current)
+					}
+				}
+				if finalBun, ok := current.(*BunSelectQuery); ok {
+					return finalBun.query
+				}
+			}
+			return sq
+		}).
+		Scan(ctx)
 }
 
 func (b *BunSelectQuery) Count(ctx context.Context) (count int, err error) {
@@ -401,7 +639,7 @@ func (b *BunInsertQuery) Exec(ctx context.Context) (res common.Result, err error
 			err = logger.HandlePanic("BunInsertQuery.Exec", r)
 		}
 	}()
-	if b.values != nil && len(b.values) > 0 {
+	if len(b.values) > 0 {
 		if !b.hasModel {
 			// If no model was set, use the values map as the model
 			// Bun can insert map[string]interface{} directly

pkg/common/adapters/router/bunrouter.go

@@ -141,6 +141,12 @@ func (b *BunRouterRequest) AllHeaders() map[string]string {
 	return headers
 }
 
+// UnderlyingRequest returns the underlying *http.Request
+// This is useful when you need to pass the request to other handlers
+func (b *BunRouterRequest) UnderlyingRequest() *http.Request {
+	return b.req.Request
+}
+
 // StandardBunRouterAdapter creates routes compatible with standard bunrouter handlers
 type StandardBunRouterAdapter struct {
 	*BunRouterAdapter

pkg/common/adapters/router/mux.go

@@ -137,6 +137,12 @@ func (h *HTTPRequest) AllHeaders() map[string]string {
 	return headers
 }
 
+// UnderlyingRequest returns the underlying *http.Request
+// This is useful when you need to pass the request to other handlers
+func (h *HTTPRequest) UnderlyingRequest() *http.Request {
+	return h.req
+}
+
 // HTTPResponseWriter adapts our ResponseWriter interface to standard http.ResponseWriter
 type HTTPResponseWriter struct {
 	resp   http.ResponseWriter
@@ -166,6 +172,12 @@ func (h *HTTPResponseWriter) WriteJSON(data interface{}) error {
 	return json.NewEncoder(h.resp).Encode(data)
 }
 
+// UnderlyingResponseWriter returns the underlying http.ResponseWriter
+// This is useful when you need to pass the response writer to other handlers
+func (h *HTTPResponseWriter) UnderlyingResponseWriter() http.ResponseWriter {
+	return h.resp
+}
+
 // StandardMuxAdapter creates routes compatible with standard http.HandlerFunc
 type StandardMuxAdapter struct {
 	*MuxAdapter

pkg/common/cors.go

@@ -0,0 +1,119 @@
+package common
+
+import (
+	"fmt"
+	"strings"
+)
+
+// CORSConfig holds CORS configuration
+type CORSConfig struct {
+	AllowedOrigins []string
+	AllowedMethods []string
+	AllowedHeaders []string
+	MaxAge         int
+}
+
+// DefaultCORSConfig returns a default CORS configuration suitable for HeadSpec
+func DefaultCORSConfig() CORSConfig {
+	return CORSConfig{
+		AllowedOrigins: []string{"*"},
+		AllowedMethods: []string{"GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS"},
+		AllowedHeaders: GetHeadSpecHeaders(),
+		MaxAge:         86400, // 24 hours
+	}
+}
+
+// GetHeadSpecHeaders returns all headers used by HeadSpec
+func GetHeadSpecHeaders() []string {
+	return []string{
+		// Standard headers
+		"Content-Type",
+		"Authorization",
+		"Accept",
+		"Accept-Language",
+		"Content-Language",
+
+		// Field Selection
+		"X-Select-Fields",
+		"X-Not-Select-Fields",
+		"X-Clean-JSON",
+
+		// Filtering & Search
+		"X-FieldFilter-*",
+		"X-SearchFilter-*",
+		"X-SearchOp-*",
+		"X-SearchOr-*",
+		"X-SearchAnd-*",
+		"X-SearchCols",
+		"X-Custom-SQL-W",
+		"X-Custom-SQL-W-*",
+		"X-Custom-SQL-Or",
+		"X-Custom-SQL-Or-*",
+
+		// Joins & Relations
+		"X-Preload",
+		"X-Preload-*",
+		"X-Expand",
+		"X-Expand-*",
+		"X-Custom-SQL-Join",
+		"X-Custom-SQL-Join-*",
+
+		// Sorting & Pagination
+		"X-Sort",
+		"X-Sort-*",
+		"X-Limit",
+		"X-Offset",
+		"X-Cursor-Forward",
+		"X-Cursor-Backward",
+
+		// Advanced Features
+		"X-AdvSQL-*",
+		"X-CQL-Sel-*",
+		"X-Distinct",
+		"X-SkipCount",
+		"X-SkipCache",
+		"X-Fetch-RowNumber",
+		"X-PKRow",
+
+		// Response Format
+		"X-SimpleAPI",
+		"X-DetailAPI",
+		"X-Syncfusion",
+		"X-Single-Record-As-Object",
+
+		// Transaction Control
+		"X-Transaction-Atomic",
+
+		// X-Files - comprehensive JSON configuration
+		"X-Files",
+	}
+}
+
+// SetCORSHeaders sets CORS headers on a response writer
+func SetCORSHeaders(w ResponseWriter, config CORSConfig) {
+	// Set allowed origins
+	if len(config.AllowedOrigins) > 0 {
+		w.SetHeader("Access-Control-Allow-Origin", strings.Join(config.AllowedOrigins, ", "))
+	}
+
+	// Set allowed methods
+	if len(config.AllowedMethods) > 0 {
+		w.SetHeader("Access-Control-Allow-Methods", strings.Join(config.AllowedMethods, ", "))
+	}
+
+	// Set allowed headers
+	if len(config.AllowedHeaders) > 0 {
+		w.SetHeader("Access-Control-Allow-Headers", strings.Join(config.AllowedHeaders, ", "))
+	}
+
+	// Set max age
+	if config.MaxAge > 0 {
+		w.SetHeader("Access-Control-Max-Age", fmt.Sprintf("%d", config.MaxAge))
+	}
+
+	// Allow credentials
+	w.SetHeader("Access-Control-Allow-Credentials", "true")
+
+	// Expose headers that clients can read
+	w.SetHeader("Access-Control-Expose-Headers", "Content-Range, X-Api-Range-Total, X-Api-Range-Size")
+}

pkg/common/handler_example.go

@@ -0,0 +1,97 @@
+package common
+
+// Example showing how to use the common handler interfaces
+// This file demonstrates the handler interface hierarchy and usage patterns
+
+// ProcessWithAnyHandler demonstrates using the base SpecHandler interface
+// which works with any handler type (resolvespec, restheadspec, or funcspec)
+func ProcessWithAnyHandler(handler SpecHandler) Database {
+	// All handlers expose GetDatabase() through the SpecHandler interface
+	return handler.GetDatabase()
+}
+
+// ProcessCRUDRequest demonstrates using the CRUDHandler interface
+// which works with resolvespec.Handler and restheadspec.Handler
+func ProcessCRUDRequest(handler CRUDHandler, w ResponseWriter, r Request, params map[string]string) {
+	// Both resolvespec and restheadspec handlers implement Handle()
+	handler.Handle(w, r, params)
+}
+
+// ProcessMetadataRequest demonstrates getting metadata from CRUD handlers
+func ProcessMetadataRequest(handler CRUDHandler, w ResponseWriter, r Request, params map[string]string) {
+	// Both resolvespec and restheadspec handlers implement HandleGet()
+	handler.HandleGet(w, r, params)
+}
+
+// Example usage patterns (not executable, just for documentation):
+/*
+// Example 1: Using with resolvespec.Handler
+func ExampleResolveSpec() {
+	db := // ... get database
+	registry := // ... get registry
+
+	handler := resolvespec.NewHandler(db, registry)
+
+	// Can be used as SpecHandler
+	var specHandler SpecHandler = handler
+	database := specHandler.GetDatabase()
+
+	// Can be used as CRUDHandler
+	var crudHandler CRUDHandler = handler
+	crudHandler.Handle(w, r, params)
+	crudHandler.HandleGet(w, r, params)
+}
+
+// Example 2: Using with restheadspec.Handler
+func ExampleRestHeadSpec() {
+	db := // ... get database
+	registry := // ... get registry
+
+	handler := restheadspec.NewHandler(db, registry)
+
+	// Can be used as SpecHandler
+	var specHandler SpecHandler = handler
+	database := specHandler.GetDatabase()
+
+	// Can be used as CRUDHandler
+	var crudHandler CRUDHandler = handler
+	crudHandler.Handle(w, r, params)
+	crudHandler.HandleGet(w, r, params)
+}
+
+// Example 3: Using with funcspec.Handler
+func ExampleFuncSpec() {
+	db := // ... get database
+
+	handler := funcspec.NewHandler(db)
+
+	// Can be used as SpecHandler
+	var specHandler SpecHandler = handler
+	database := specHandler.GetDatabase()
+
+	// Can be used as QueryHandler
+	var queryHandler QueryHandler = handler
+	// funcspec has different methods: SqlQueryList() and SqlQuery()
+	// which return HTTP handler functions
+}
+
+// Example 4: Polymorphic handler processing
+func ProcessHandlers(handlers []SpecHandler) {
+	for _, handler := range handlers {
+		// All handlers expose the database
+		db := handler.GetDatabase()
+
+		// Type switch for specific handler types
+		switch h := handler.(type) {
+		case CRUDHandler:
+			// This is resolvespec or restheadspec
+			// Can call Handle() and HandleGet()
+			_ = h
+		case QueryHandler:
+			// This is funcspec
+			// Can call SqlQueryList() and SqlQuery()
+			_ = h
+		}
+	}
+}
+*/

pkg/common/interfaces.go

@@ -1,6 +1,11 @@
 package common
 
-import "context"
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+)
 
 // Database interface designed to work with both GORM and Bun
 type Database interface {
@@ -117,6 +122,7 @@ type Request interface {
 	PathParam(key string) string
 	QueryParam(key string) string
 	AllQueryParams() map[string]string // Get all query parameters as a map
+	UnderlyingRequest() *http.Request  // Get the underlying *http.Request for forwarding to other handlers
 }
 
 // ResponseWriter interface abstracts HTTP response
@@ -125,11 +131,113 @@ type ResponseWriter interface {
 	WriteHeader(statusCode int)
 	Write(data []byte) (int, error)
 	WriteJSON(data interface{}) error
+	UnderlyingResponseWriter() http.ResponseWriter // Get the underlying http.ResponseWriter for forwarding to other handlers
 }
 
 // HTTPHandlerFunc type for HTTP handlers
 type HTTPHandlerFunc func(ResponseWriter, Request)
 
+// WrapHTTPRequest wraps standard http.ResponseWriter and *http.Request into common interfaces
+func WrapHTTPRequest(w http.ResponseWriter, r *http.Request) (ResponseWriter, Request) {
+	return &StandardResponseWriter{w: w}, &StandardRequest{r: r}
+}
+
+// StandardResponseWriter adapts http.ResponseWriter to ResponseWriter interface
+type StandardResponseWriter struct {
+	w      http.ResponseWriter
+	status int
+}
+
+func (s *StandardResponseWriter) SetHeader(key, value string) {
+	s.w.Header().Set(key, value)
+}
+
+func (s *StandardResponseWriter) WriteHeader(statusCode int) {
+	s.status = statusCode
+	s.w.WriteHeader(statusCode)
+}
+
+func (s *StandardResponseWriter) Write(data []byte) (int, error) {
+	return s.w.Write(data)
+}
+
+func (s *StandardResponseWriter) WriteJSON(data interface{}) error {
+	s.SetHeader("Content-Type", "application/json")
+	return json.NewEncoder(s.w).Encode(data)
+}
+
+func (s *StandardResponseWriter) UnderlyingResponseWriter() http.ResponseWriter {
+	return s.w
+}
+
+// StandardRequest adapts *http.Request to Request interface
+type StandardRequest struct {
+	r    *http.Request
+	body []byte
+}
+
+func (s *StandardRequest) Method() string {
+	return s.r.Method
+}
+
+func (s *StandardRequest) URL() string {
+	return s.r.URL.String()
+}
+
+func (s *StandardRequest) Header(key string) string {
+	return s.r.Header.Get(key)
+}
+
+func (s *StandardRequest) AllHeaders() map[string]string {
+	headers := make(map[string]string)
+	for key, values := range s.r.Header {
+		if len(values) > 0 {
+			headers[key] = values[0]
+		}
+	}
+	return headers
+}
+
+func (s *StandardRequest) Body() ([]byte, error) {
+	if s.body != nil {
+		return s.body, nil
+	}
+	if s.r.Body == nil {
+		return nil, nil
+	}
+	defer s.r.Body.Close()
+	body, err := io.ReadAll(s.r.Body)
+	if err != nil {
+		return nil, err
+	}
+	s.body = body
+	return body, nil
+}
+
+func (s *StandardRequest) PathParam(key string) string {
+	// Standard http.Request doesn't have path params
+	// This should be set by the router
+	return ""
+}
+
+func (s *StandardRequest) QueryParam(key string) string {
+	return s.r.URL.Query().Get(key)
+}
+
+func (s *StandardRequest) AllQueryParams() map[string]string {
+	params := make(map[string]string)
+	for key, values := range s.r.URL.Query() {
+		if len(values) > 0 {
+			params[key] = values[0]
+		}
+	}
+	return params
+}
+
+func (s *StandardRequest) UnderlyingRequest() *http.Request {
+	return s.r
+}
+
 // TableNameProvider interface for models that provide table names
 type TableNameProvider interface {
 	TableName() string
@@ -148,3 +256,39 @@ type PrimaryKeyNameProvider interface {
 type SchemaProvider interface {
 	SchemaName() string
 }
+
+// SpecHandler interface represents common functionality across all spec handlers
+// This is the base interface implemented by:
+//   - resolvespec.Handler: Handles CRUD operations via request body with explicit operation field
+//   - restheadspec.Handler: Handles CRUD operations via HTTP methods (GET/POST/PUT/DELETE)
+//   - funcspec.Handler: Handles custom SQL query execution with dynamic parameters
+//
+// The interface hierarchy is:
+//
+//	SpecHandler (base)
+//	├── CRUDHandler (resolvespec, restheadspec)
+//	└── QueryHandler (funcspec)
+type SpecHandler interface {
+	// GetDatabase returns the underlying database connection
+	GetDatabase() Database
+}
+
+// CRUDHandler interface for handlers that support CRUD operations
+// This is implemented by resolvespec.Handler and restheadspec.Handler
+type CRUDHandler interface {
+	SpecHandler
+
+	// Handle processes API requests through router-agnostic interface
+	Handle(w ResponseWriter, r Request, params map[string]string)
+
+	// HandleGet processes GET requests for metadata
+	HandleGet(w ResponseWriter, r Request, params map[string]string)
+}
+
+// QueryHandler interface for handlers that execute SQL queries
+// This is implemented by funcspec.Handler
+// Note: funcspec uses standard http.ResponseWriter and *http.Request instead of common interfaces
+type QueryHandler interface {
+	SpecHandler
+	// Methods are defined in funcspec package due to different function signature requirements
+}

pkg/common/sql_helpers.go

@@ -5,6 +5,8 @@ import (
 	"strings"
 
 	"github.com/bitechdev/ResolveSpec/pkg/logger"
+	"github.com/bitechdev/ResolveSpec/pkg/modelregistry"
+	"github.com/bitechdev/ResolveSpec/pkg/reflection"
 )
 
 // ValidateAndFixPreloadWhere validates that the WHERE clause for a preload contains
@@ -96,6 +98,173 @@ func IsSQLExpression(cond string) bool {
 	return false
 }
 
+// IsTrivialCondition checks if a condition is trivial and always evaluates to true
+// These conditions should be removed from WHERE clauses as they have no filtering effect
+func IsTrivialCondition(cond string) bool {
+	cond = strings.TrimSpace(cond)
+	lowerCond := strings.ToLower(cond)
+
+	// Conditions that always evaluate to true
+	trivialConditions := []string{
+		"1=1", "1 = 1", "1= 1", "1 =1",
+		"true", "true = true", "true=true", "true= true", "true =true",
+		"0=0", "0 = 0", "0= 0", "0 =0",
+	}
+
+	for _, trivial := range trivialConditions {
+		if lowerCond == trivial {
+			return true
+		}
+	}
+
+	return false
+}
+
+// SanitizeWhereClause removes trivial conditions and optionally prefixes table/relation names to columns
+// This function should be used everywhere a WHERE statement is sent to ensure clean, efficient SQL
+//
+// Parameters:
+//   - where: The WHERE clause string to sanitize
+//   - tableName: Optional table/relation name to prefix to column references (empty string to skip prefixing)
+//
+// Returns:
+//   - The sanitized WHERE clause with trivial conditions removed and columns optionally prefixed
+//   - An empty string if all conditions were trivial or the input was empty
+func SanitizeWhereClause(where string, tableName string) string {
+	if where == "" {
+		return ""
+	}
+
+	where = strings.TrimSpace(where)
+
+	// Strip outer parentheses and re-trim
+	where = stripOuterParentheses(where)
+
+	// Get valid columns from the model if tableName is provided
+	var validColumns map[string]bool
+	if tableName != "" {
+		validColumns = getValidColumnsForTable(tableName)
+	}
+
+	// Split by AND to handle multiple conditions
+	conditions := splitByAND(where)
+
+	validConditions := make([]string, 0, len(conditions))
+
+	for _, cond := range conditions {
+		cond = strings.TrimSpace(cond)
+		if cond == "" {
+			continue
+		}
+
+		// Strip parentheses from the condition before checking
+		condToCheck := stripOuterParentheses(cond)
+
+		// Skip trivial conditions that always evaluate to true
+		if IsTrivialCondition(condToCheck) {
+			logger.Debug("Removing trivial condition: '%s'", cond)
+			continue
+		}
+
+		// If tableName is provided and the condition doesn't already have a table prefix,
+		// attempt to add it
+		if tableName != "" && !hasTablePrefix(condToCheck) {
+			// Check if this is a SQL expression/literal that shouldn't be prefixed
+			if !IsSQLExpression(strings.ToLower(condToCheck)) {
+				// Extract the column name and prefix it
+				columnName := ExtractColumnName(condToCheck)
+				if columnName != "" {
+					// Only prefix if this is a valid column in the model
+					// If we don't have model info (validColumns is nil), prefix anyway for backward compatibility
+					if validColumns == nil || isValidColumn(columnName, validColumns) {
+						// Replace in the original condition (without stripped parens)
+						cond = strings.Replace(cond, columnName, tableName+"."+columnName, 1)
+						logger.Debug("Prefixed column in condition: '%s'", cond)
+					} else {
+						logger.Debug("Skipping prefix for '%s' - not a valid column in model", columnName)
+					}
+				}
+			}
+		}
+
+		validConditions = append(validConditions, cond)
+	}
+
+	if len(validConditions) == 0 {
+		return ""
+	}
+
+	result := strings.Join(validConditions, " AND ")
+
+	if result != where {
+		logger.Debug("Sanitized WHERE clause: '%s' -> '%s'", where, result)
+	}
+
+	return result
+}
+
+// stripOuterParentheses removes matching outer parentheses from a string
+// It handles nested parentheses correctly
+func stripOuterParentheses(s string) string {
+	s = strings.TrimSpace(s)
+
+	for {
+		if len(s) < 2 || s[0] != '(' || s[len(s)-1] != ')' {
+			return s
+		}
+
+		// Check if these parentheses match (i.e., they're the outermost pair)
+		depth := 0
+		matched := false
+		for i := 0; i < len(s); i++ {
+			switch s[i] {
+			case '(':
+				depth++
+			case ')':
+				depth--
+				if depth == 0 && i == len(s)-1 {
+					matched = true
+				} else if depth == 0 {
+					// Found a closing paren before the end, so outer parens don't match
+					return s
+				}
+			}
+		}
+
+		if !matched {
+			return s
+		}
+
+		// Strip the outer parentheses and continue
+		s = strings.TrimSpace(s[1 : len(s)-1])
+	}
+}
+
+// splitByAND splits a WHERE clause by AND operators (case-insensitive)
+// This is a simple split that doesn't handle nested parentheses or complex expressions
+func splitByAND(where string) []string {
+	// First try uppercase AND
+	conditions := strings.Split(where, " AND ")
+
+	// If we didn't split on uppercase, try lowercase
+	if len(conditions) == 1 {
+		conditions = strings.Split(where, " and ")
+	}
+
+	// If we still didn't split, try mixed case
+	if len(conditions) == 1 {
+		conditions = strings.Split(where, " And ")
+	}
+
+	return conditions
+}
+
+// hasTablePrefix checks if a condition already has a table/relation prefix (contains a dot)
+func hasTablePrefix(cond string) bool {
+	// Look for patterns like "table.column" or "`table`.`column`" or "\"table\".\"column\""
+	return strings.Contains(cond, ".")
+}
+
 // ExtractColumnName extracts the column name from a WHERE condition
 // For example: "status = 'active'" returns "status"
 func ExtractColumnName(cond string) string {
@@ -134,3 +303,38 @@ func IsSQLKeyword(word string) bool {
 	}
 	return false
 }
+
+// getValidColumnsForTable retrieves the valid SQL columns for a table from the model registry
+// Returns a map of column names for fast lookup, or nil if the model is not found
+func getValidColumnsForTable(tableName string) map[string]bool {
+	// Try to get the model from the registry
+	model, err := modelregistry.GetModelByName(tableName)
+	if err != nil {
+		// Model not found, return nil to indicate we should use fallback behavior
+		return nil
+	}
+
+	// Get SQL columns from the model
+	columns := reflection.GetSQLModelColumns(model)
+	if len(columns) == 0 {
+		// No columns found, return nil
+		return nil
+	}
+
+	// Build a map for fast lookup
+	columnMap := make(map[string]bool, len(columns))
+	for _, col := range columns {
+		columnMap[strings.ToLower(col)] = true
+	}
+
+	return columnMap
+}
+
+// isValidColumn checks if a column name exists in the valid columns map
+// Handles case-insensitive comparison
+func isValidColumn(columnName string, validColumns map[string]bool) bool {
+	if validColumns == nil {
+		return true // No model info, assume valid
+	}
+	return validColumns[strings.ToLower(columnName)]
+}

pkg/common/sql_helpers_test.go

@@ -0,0 +1,224 @@
+package common
+
+import (
+	"testing"
+
+	"github.com/bitechdev/ResolveSpec/pkg/modelregistry"
+)
+
+func TestSanitizeWhereClause(t *testing.T) {
+	tests := []struct {
+		name      string
+		where     string
+		tableName string
+		expected  string
+	}{
+		{
+			name:      "trivial conditions in parentheses",
+			where:     "(true AND true AND true)",
+			tableName: "mastertask",
+			expected:  "",
+		},
+		{
+			name:      "trivial conditions without parentheses",
+			where:     "true AND true AND true",
+			tableName: "mastertask",
+			expected:  "",
+		},
+		{
+			name:      "single trivial condition",
+			where:     "true",
+			tableName: "mastertask",
+			expected:  "",
+		},
+		{
+			name:      "valid condition with parentheses",
+			where:     "(status = 'active')",
+			tableName: "users",
+			expected:  "users.status = 'active'",
+		},
+		{
+			name:      "mixed trivial and valid conditions",
+			where:     "true AND status = 'active' AND 1=1",
+			tableName: "users",
+			expected:  "users.status = 'active'",
+		},
+		{
+			name:      "condition already with table prefix",
+			where:     "users.status = 'active'",
+			tableName: "users",
+			expected:  "users.status = 'active'",
+		},
+		{
+			name:      "multiple valid conditions",
+			where:     "status = 'active' AND age > 18",
+			tableName: "users",
+			expected:  "users.status = 'active' AND users.age > 18",
+		},
+		{
+			name:      "no table name provided",
+			where:     "status = 'active'",
+			tableName: "",
+			expected:  "status = 'active'",
+		},
+		{
+			name:      "empty where clause",
+			where:     "",
+			tableName: "users",
+			expected:  "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := SanitizeWhereClause(tt.where, tt.tableName)
+			if result != tt.expected {
+				t.Errorf("SanitizeWhereClause(%q, %q) = %q; want %q", tt.where, tt.tableName, result, tt.expected)
+			}
+		})
+	}
+}
+
+func TestStripOuterParentheses(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "single level parentheses",
+			input:    "(true)",
+			expected: "true",
+		},
+		{
+			name:     "multiple levels",
+			input:    "((true))",
+			expected: "true",
+		},
+		{
+			name:     "no parentheses",
+			input:    "true",
+			expected: "true",
+		},
+		{
+			name:     "mismatched parentheses",
+			input:    "(true",
+			expected: "(true",
+		},
+		{
+			name:     "complex expression",
+			input:    "(a AND b)",
+			expected: "a AND b",
+		},
+		{
+			name:     "nested but not outer",
+			input:    "(a AND (b OR c)) AND d",
+			expected: "(a AND (b OR c)) AND d",
+		},
+		{
+			name:     "with spaces",
+			input:    "  ( true )  ",
+			expected: "true",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := stripOuterParentheses(tt.input)
+			if result != tt.expected {
+				t.Errorf("stripOuterParentheses(%q) = %q; want %q", tt.input, result, tt.expected)
+			}
+		})
+	}
+}
+
+func TestIsTrivialCondition(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected bool
+	}{
+		{"true", "true", true},
+		{"true with spaces", "  true  ", true},
+		{"TRUE uppercase", "TRUE", true},
+		{"1=1", "1=1", true},
+		{"1 = 1", "1 = 1", true},
+		{"true = true", "true = true", true},
+		{"valid condition", "status = 'active'", false},
+		{"false", "false", false},
+		{"column name", "is_active", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := IsTrivialCondition(tt.input)
+			if result != tt.expected {
+				t.Errorf("IsTrivialCondition(%q) = %v; want %v", tt.input, result, tt.expected)
+			}
+		})
+	}
+}
+
+// Test model for model-aware sanitization tests
+type MasterTask struct {
+	ID     int    `bun:"id,pk"`
+	Name   string `bun:"name"`
+	Status string `bun:"status"`
+	UserID int    `bun:"user_id"`
+}
+
+func TestSanitizeWhereClauseWithModel(t *testing.T) {
+	// Register the test model
+	err := modelregistry.RegisterModel(MasterTask{}, "mastertask")
+	if err != nil {
+		// Model might already be registered, ignore error
+		t.Logf("Model registration returned: %v", err)
+	}
+
+	tests := []struct {
+		name      string
+		where     string
+		tableName string
+		expected  string
+	}{
+		{
+			name:      "valid column gets prefixed",
+			where:     "status = 'active'",
+			tableName: "mastertask",
+			expected:  "mastertask.status = 'active'",
+		},
+		{
+			name:      "multiple valid columns get prefixed",
+			where:     "status = 'active' AND user_id = 123",
+			tableName: "mastertask",
+			expected:  "mastertask.status = 'active' AND mastertask.user_id = 123",
+		},
+		{
+			name:      "invalid column does not get prefixed",
+			where:     "invalid_column = 'value'",
+			tableName: "mastertask",
+			expected:  "invalid_column = 'value'",
+		},
+		{
+			name:      "mix of valid and trivial conditions",
+			where:     "true AND status = 'active' AND 1=1",
+			tableName: "mastertask",
+			expected:  "mastertask.status = 'active'",
+		},
+		{
+			name:      "parentheses with valid column",
+			where:     "(status = 'active')",
+			tableName: "mastertask",
+			expected:  "mastertask.status = 'active'",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := SanitizeWhereClause(tt.where, tt.tableName)
+			if result != tt.expected {
+				t.Errorf("SanitizeWhereClause(%q, %q) = %q; want %q", tt.where, tt.tableName, result, tt.expected)
+			}
+		})
+	}
+}

pkg/common/sql_types.go

@@ -238,13 +238,13 @@ func (t *SqlTimeStamp) UnmarshalJSON(b []byte) error {
 	var err error
 
 	if b == nil {
-		t = &SqlTimeStamp{}
+
 		return nil
 	}
 	s := strings.Trim(strings.Trim(string(b), " "), "\"")
 	if s == "null" || s == "" || s == "0" ||
 		s == "0001-01-01T00:00:00" || s == "0001-01-01" {
-		t = &SqlTimeStamp{}
+
 		return nil
 	}
 
@@ -293,7 +293,7 @@ func (t *SqlTimeStamp) Scan(value interface{}) error {
 
 // String - Override String format of time
 func (t SqlTimeStamp) String() string {
-	return fmt.Sprintf("%s", time.Time(t).Format("2006-01-02T15:04:05"))
+	return time.Time(t).Format("2006-01-02T15:04:05")
 }
 
 // GetTime - Returns Time
@@ -308,7 +308,7 @@ func (t *SqlTimeStamp) SetTime(pTime time.Time) {
 
 // Format - Formats the time
 func (t SqlTimeStamp) Format(layout string) string {
-	return fmt.Sprintf("%s", time.Time(t).Format(layout))
+	return time.Time(t).Format(layout)
 }
 
 func SqlTimeStampNow() SqlTimeStamp {
@@ -420,7 +420,6 @@ func (t *SqlDate) UnmarshalJSON(b []byte) error {
 	if s == "null" || s == "" || s == "0" ||
 		strings.HasPrefix(s, "0001-01-01T00:00:00") ||
 		s == "0001-01-01" {
-		t = &SqlDate{}
 		return nil
 	}
 
@@ -434,7 +433,7 @@ func (t *SqlDate) UnmarshalJSON(b []byte) error {
 
 // MarshalJSON - Override JSON format of time
 func (t SqlDate) MarshalJSON() ([]byte, error) {
-	tmstr := time.Time(t).Format("2006-01-02") //time.RFC3339
+	tmstr := time.Time(t).Format("2006-01-02") // time.RFC3339
 	if strings.HasPrefix(tmstr, "0001-01-01") {
 		return []byte("null"), nil
 	}
@@ -482,7 +481,7 @@ func (t SqlDate) Int64() int64 {
 
 // String - Override String format of time
 func (t SqlDate) String() string {
-	tmstr := time.Time(t).Format("2006-01-02") //time.RFC3339
+	tmstr := time.Time(t).Format("2006-01-02") // time.RFC3339
 	if strings.HasPrefix(tmstr, "0001-01-01") || strings.HasPrefix(tmstr, "1800-12-31") {
 		return "0"
 	}
@@ -517,8 +516,8 @@ func (t *SqlTime) UnmarshalJSON(b []byte) error {
 		*t = SqlTime{}
 		return nil
 	}
-	tx := time.Time{}
-	tx, err = tryParseDT(s)
+
+	tx, err := tryParseDT(s)
 	*t = SqlTime(tx)
 
 	return err
@@ -642,9 +641,8 @@ func (n SqlJSONB) AsSlice() ([]any, error) {
 func (n *SqlJSONB) UnmarshalJSON(b []byte) error {
 
 	s := strings.Trim(strings.Trim(string(b), " "), "\"")
-	invalid := (s == "null" || s == "" || len(s) < 2) || !(strings.Contains(s, "{") || strings.Contains(s, "["))
+	invalid := (s == "null" || s == "" || len(s) < 2) || (!strings.Contains(s, "{") && !strings.Contains(s, "["))
 	if invalid {
-		s = ""
 		return nil
 	}
 
@@ -661,7 +659,7 @@ func (n SqlJSONB) MarshalJSON() ([]byte, error) {
 	var obj interface{}
 	err := json.Unmarshal(n, &obj)
 	if err != nil {
-		//fmt.Printf("Invalid JSON %v", err)
+		// fmt.Printf("Invalid JSON %v", err)
 		return []byte("null"), nil
 	}
 
@@ -725,7 +723,6 @@ func (n *SqlUUID) UnmarshalJSON(b []byte) error {
 	s := strings.Trim(strings.Trim(string(b), " "), "\"")
 	invalid := (s == "null" || s == "" || len(s) < 30)
 	if invalid {
-		s = ""
 		return nil
 	}
 	*n = SqlUUID(sql.NullString{String: s, Valid: !invalid})

pkg/common/types.go

@@ -32,15 +32,22 @@ type Parameter struct {
 }
 
 type PreloadOption struct {
-	Relation    string         `json:"relation"`
-	Columns     []string       `json:"columns"`
-	OmitColumns []string       `json:"omit_columns"`
-	Sort        []SortOption   `json:"sort"`
-	Filters     []FilterOption `json:"filters"`
-	Where       string         `json:"where"`
-	Limit       *int           `json:"limit"`
-	Offset      *int           `json:"offset"`
-	Updatable   *bool          `json:"updateable"` // if true, the relation can be updated
+	Relation    string            `json:"relation"`
+	Columns     []string          `json:"columns"`
+	OmitColumns []string          `json:"omit_columns"`
+	Sort        []SortOption      `json:"sort"`
+	Filters     []FilterOption    `json:"filters"`
+	Where       string            `json:"where"`
+	Limit       *int              `json:"limit"`
+	Offset      *int              `json:"offset"`
+	Updatable   *bool             `json:"updateable"`  // if true, the relation can be updated
+	ComputedQL  map[string]string `json:"computed_ql"` // Computed columns as SQL expressions
+	Recursive   bool              `json:"recursive"`   // if true, preload recursively up to 5 levels
+
+	// Relationship keys from XFiles - used to build proper foreign key filters
+	PrimaryKey string `json:"primary_key"` // Primary key of the related table
+	RelatedKey string `json:"related_key"` // For child tables: column in child that references parent
+	ForeignKey string `json:"foreign_key"` // For parent tables: column in current table that references parent
 }
 
 type FilterOption struct {

pkg/common/validation.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/bitechdev/ResolveSpec/pkg/logger"
+	"github.com/bitechdev/ResolveSpec/pkg/reflection"
 )
 
 // ColumnValidator validates column names against a model's fields
@@ -92,23 +93,6 @@ func (v *ColumnValidator) getColumnName(field reflect.StructField) string {
 	return strings.ToLower(field.Name)
 }
 
-// extractSourceColumn extracts the base column name from PostgreSQL JSON operators
-// Examples:
-//   - "columna->>'val'" returns "columna"
-//   - "columna->'key'" returns "columna"
-//   - "columna" returns "columna"
-//   - "table.columna->>'val'" returns "table.columna"
-func extractSourceColumn(colName string) string {
-	// Check for PostgreSQL JSON operators: -> and ->>
-	if idx := strings.Index(colName, "->>"); idx != -1 {
-		return strings.TrimSpace(colName[:idx])
-	}
-	if idx := strings.Index(colName, "->"); idx != -1 {
-		return strings.TrimSpace(colName[:idx])
-	}
-	return colName
-}
-
 // ValidateColumn validates a single column name
 // Returns nil if valid, error if invalid
 // Columns prefixed with "cql" (case insensitive) are always valid
@@ -125,7 +109,7 @@ func (v *ColumnValidator) ValidateColumn(column string) error {
 	}
 
 	// Extract source column name (remove JSON operators like ->> or ->)
-	sourceColumn := extractSourceColumn(column)
+	sourceColumn := reflection.ExtractSourceColumn(column)
 
 	// Check if column exists in model
 	if _, exists := v.validColumns[strings.ToLower(sourceColumn)]; !exists {

pkg/common/validation_json_test.go

@@ -2,6 +2,8 @@ package common
 
 import (
 	"testing"
+
+	"github.com/bitechdev/ResolveSpec/pkg/reflection"
 )
 
 func TestExtractSourceColumn(t *testing.T) {
@@ -49,9 +51,9 @@ func TestExtractSourceColumn(t *testing.T) {
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
-			result := extractSourceColumn(tc.input)
+			result := reflection.ExtractSourceColumn(tc.input)
 			if result != tc.expected {
-				t.Errorf("extractSourceColumn(%q) = %q; want %q", tc.input, result, tc.expected)
+				t.Errorf("reflection.ExtractSourceColumn(%q) = %q; want %q", tc.input, result, tc.expected)
 			}
 		})
 	}

pkg/funcspec/function_api.go

@@ -0,0 +1,948 @@
+package funcspec
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"runtime/debug"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+	"github.com/bitechdev/ResolveSpec/pkg/logger"
+	"github.com/bitechdev/ResolveSpec/pkg/restheadspec"
+	"github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+// Handler handles function-based SQL API requests
+type Handler struct {
+	db    common.Database
+	hooks *HookRegistry
+}
+
+// NewHandler creates a new function API handler
+func NewHandler(db common.Database) *Handler {
+	return &Handler{
+		db:    db,
+		hooks: NewHookRegistry(),
+	}
+}
+
+// GetDatabase returns the underlying database connection
+// Implements common.SpecHandler interface
+func (h *Handler) GetDatabase() common.Database {
+	return h.db
+}
+
+// Hooks returns the hook registry for this handler
+// Use this to register custom hooks for operations
+func (h *Handler) Hooks() *HookRegistry {
+	return h.hooks
+}
+
+// HTTPFuncType is a function type for HTTP handlers
+type HTTPFuncType func(http.ResponseWriter, *http.Request)
+
+// SqlQueryList creates an HTTP handler that executes a SQL query and returns a list with pagination
+func (h *Handler) SqlQueryList(sqlquery string, pNoCount, pBlankparms, pAllowFilter bool) HTTPFuncType {
+	return func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			if err := recover(); err != nil {
+				stack := debug.Stack()
+				logger.Error("Panic in SqlQueryList: %v\nStack trace:\n%s", err, string(stack))
+				http.Error(w, fmt.Sprintf("Internal server error: %v", err), http.StatusInternalServerError)
+			}
+		}()
+
+		ctx, cancel := context.WithTimeout(r.Context(), 900*time.Second)
+		defer cancel()
+
+		var dbobjlist []map[string]interface{}
+		var total int64
+		propQry := make(map[string]string)
+		inputvars := make([]string, 0)
+		metainfo := make(map[string]interface{})
+		variables := make(map[string]interface{})
+		complexAPI := false
+
+		// Get user context from security package
+		userCtx, ok := security.GetUserContext(ctx)
+		if !ok {
+			logger.Warn("No user context found in request")
+			userCtx = &security.UserContext{UserID: 0, UserName: "anonymous"}
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+
+		// Initialize hook context
+		hookCtx := &HookContext{
+			Context:     ctx,
+			Handler:     h,
+			Request:     r,
+			Writer:      w,
+			SQLQuery:    sqlquery,
+			Variables:   variables,
+			InputVars:   inputvars,
+			MetaInfo:    metainfo,
+			PropQry:     propQry,
+			UserContext: userCtx,
+			NoCount:     pNoCount,
+			BlankParams: pBlankparms,
+			AllowFilter: pAllowFilter,
+			ComplexAPI:  complexAPI,
+		}
+
+		// Execute BeforeQueryList hook
+		if err := h.hooks.Execute(BeforeQueryList, hookCtx); err != nil {
+			logger.Error("BeforeQueryList hook failed: %v", err)
+			sendError(w, http.StatusBadRequest, "hook_error", "Hook execution failed", err)
+			return
+		}
+
+		// Check if hook aborted the operation
+		if hookCtx.Abort {
+			if hookCtx.AbortCode == 0 {
+				hookCtx.AbortCode = http.StatusBadRequest
+			}
+			sendError(w, hookCtx.AbortCode, "operation_aborted", hookCtx.AbortMessage, nil)
+			return
+		}
+
+		// Use potentially modified SQL query and variables from hooks
+		sqlquery = hookCtx.SQLQuery
+		variables = hookCtx.Variables
+		// complexAPI = hookCtx.ComplexAPI
+
+		// Extract input variables from SQL query (placeholders like [variable])
+		sqlquery = h.extractInputVariables(sqlquery, &inputvars)
+
+		// Merge URL path parameters
+		sqlquery = h.mergePathParams(r, sqlquery, variables)
+
+		// Parse comprehensive parameters from headers and query string
+		reqParams := h.ParseParameters(r)
+		complexAPI = reqParams.ComplexAPI
+
+		// Merge query string parameters
+		sqlquery = h.mergeQueryParams(r, sqlquery, variables, pAllowFilter, propQry)
+
+		// Merge header parameters
+		sqlquery = h.mergeHeaderParams(r, sqlquery, variables, propQry, &complexAPI)
+
+		// Apply filters from parsed parameters (if not already applied by pAllowFilter)
+		if !pAllowFilter {
+			sqlquery = h.ApplyFilters(sqlquery, reqParams)
+		}
+
+		// Apply field selection
+		sqlquery = h.ApplyFieldSelection(sqlquery, reqParams)
+
+		// Apply DISTINCT if requested
+		sqlquery = h.ApplyDistinct(sqlquery, reqParams)
+
+		// Override pNoCount if skipcount is specified
+		if reqParams.SkipCount {
+			pNoCount = true
+		}
+
+		// Build metainfo
+		metainfo["ipaddress"] = getIPAddress(r)
+		metainfo["url"] = r.RequestURI
+		metainfo["user"] = userCtx.UserName
+		metainfo["rid_user"] = fmt.Sprintf("%d", userCtx.UserID)
+		metainfo["method"] = r.Method
+		metainfo["variables"] = variables
+
+		// Replace meta variables in SQL
+		sqlquery = h.replaceMetaVariables(sqlquery, r, userCtx, metainfo, variables)
+
+		// Remove unused input variables
+		if pBlankparms {
+			for _, kw := range inputvars {
+				replacement := getReplacementForBlankParam(sqlquery, kw)
+				sqlquery = strings.ReplaceAll(sqlquery, kw, replacement)
+				logger.Debug("Replaced unused variable %s with: %s", kw, replacement)
+			}
+		}
+
+		// Update hook context with latest SQL query and variables
+		hookCtx.SQLQuery = sqlquery
+		hookCtx.Variables = variables
+		hookCtx.InputVars = inputvars
+
+		// Execute query within transaction
+		err := h.db.RunInTransaction(ctx, func(tx common.Database) error {
+			sqlqueryCnt := sqlquery
+
+			// Parse sorting and pagination parameters
+			sortcols, limit, offset := h.parsePaginationParams(r)
+
+			// Override with parsed parameters if available
+			if reqParams.SortColumns != "" {
+				sortcols = reqParams.SortColumns
+			}
+			if reqParams.Limit > 0 {
+				limit = reqParams.Limit
+			}
+			if reqParams.Offset > 0 {
+				offset = reqParams.Offset
+			}
+
+			hookCtx.SortColumns = sortcols
+			hookCtx.Limit = limit
+			hookCtx.Offset = offset
+			fromPos := strings.Index(strings.ToLower(sqlquery), "from ")
+			orderbyPos := strings.Index(strings.ToLower(sqlquery), "order by")
+
+			if len(sortcols) > 0 && (orderbyPos < 0 || (orderbyPos > 0 && orderbyPos < fromPos)) {
+				sqlquery = fmt.Sprintf("%s \nORDER BY %s", sqlquery, ValidSQL(sortcols, "select"))
+			}
+
+			if !pNoCount {
+				if limit > 0 && offset > 0 {
+					sqlquery = fmt.Sprintf("%s \nLIMIT %d OFFSET %d", sqlquery, limit, offset)
+				} else if limit > 0 {
+					sqlquery = fmt.Sprintf("%s \nLIMIT %d", sqlquery, limit)
+				} else {
+					sqlquery = fmt.Sprintf("%s \nLIMIT %d", sqlquery, 20000)
+				}
+
+				// Get total count
+				countQuery := fmt.Sprintf("SELECT COUNT(1) FROM (%s) cnts", sqlqueryCnt)
+				var countResult struct{ Count int64 }
+				if err := tx.Query(ctx, &countResult, countQuery); err != nil {
+					sendError(w, http.StatusBadRequest, "count_failed", "Failed to retrieve record count", err)
+					return err
+				}
+				total = countResult.Count
+			}
+
+			// Execute BeforeSQLExec hook
+			hookCtx.SQLQuery = sqlquery
+			if err := h.hooks.Execute(BeforeSQLExec, hookCtx); err != nil {
+				logger.Error("BeforeSQLExec hook failed: %v", err)
+				sendError(w, http.StatusBadRequest, "hook_error", "Hook execution failed", err)
+				return err
+			}
+			// Use potentially modified SQL query from hook
+			sqlquery = hookCtx.SQLQuery
+
+			// Execute main query
+			rows := make([]map[string]interface{}, 0)
+			if err := tx.Query(ctx, &rows, sqlquery); err != nil {
+				sendError(w, http.StatusBadRequest, "query_failed", "Failed to retrieve records", err)
+				return err
+			}
+
+			dbobjlist = rows
+
+			if pNoCount {
+				total = int64(len(dbobjlist))
+			}
+
+			// Execute AfterSQLExec hook
+			hookCtx.Result = dbobjlist
+			hookCtx.Total = total
+			if err := h.hooks.Execute(AfterSQLExec, hookCtx); err != nil {
+				logger.Error("AfterSQLExec hook failed: %v", err)
+				sendError(w, http.StatusBadRequest, "hook_error", "Hook execution failed", err)
+				return err
+			}
+			// Use potentially modified result from hook
+			if modifiedResult, ok := hookCtx.Result.([]map[string]interface{}); ok {
+				dbobjlist = modifiedResult
+			}
+			total = hookCtx.Total
+
+			return nil
+		})
+
+		if err != nil {
+			logger.Error("Transaction failed: %v", err)
+			return
+		}
+
+		// Execute AfterQueryList hook
+		hookCtx.Result = dbobjlist
+		hookCtx.Total = total
+		hookCtx.Error = err
+		if err := h.hooks.Execute(AfterQueryList, hookCtx); err != nil {
+			logger.Error("AfterQueryList hook failed: %v", err)
+			sendError(w, http.StatusInternalServerError, "hook_error", "Hook execution failed", err)
+			return
+		}
+		// Use potentially modified result from hook
+		if modifiedResult, ok := hookCtx.Result.([]map[string]interface{}); ok {
+			dbobjlist = modifiedResult
+		}
+		total = hookCtx.Total
+
+		// Set response headers
+		respOffset := 0
+		if offsetStr := r.URL.Query().Get("offset"); offsetStr != "" {
+			if o, err := strconv.Atoi(offsetStr); err == nil {
+				respOffset = o
+			}
+		}
+
+		w.Header().Set("Content-Range", fmt.Sprintf("items %d-%d/%d", respOffset, respOffset+len(dbobjlist), total))
+		logger.Info("Serving: Records %d of %d", len(dbobjlist), total)
+
+		// Execute BeforeResponse hook
+		hookCtx.Result = dbobjlist
+		hookCtx.Total = total
+		if err := h.hooks.Execute(BeforeResponse, hookCtx); err != nil {
+			logger.Error("BeforeResponse hook failed: %v", err)
+			sendError(w, http.StatusInternalServerError, "hook_error", "Hook execution failed", err)
+			return
+		}
+		// Use potentially modified result from hook
+		if modifiedResult, ok := hookCtx.Result.([]map[string]interface{}); ok {
+			dbobjlist = modifiedResult
+		}
+
+		if len(dbobjlist) == 0 {
+			_, _ = w.Write([]byte("[]"))
+			return
+		}
+
+		// Format response based on response format
+		switch reqParams.ResponseFormat {
+		case "syncfusion":
+			// Syncfusion format: { result: data, count: total }
+			response := map[string]interface{}{
+				"result": dbobjlist,
+				"count":  total,
+			}
+			data, err := json.Marshal(response)
+			if err != nil {
+				sendError(w, http.StatusInternalServerError, "json_error", "Could not marshal response", err)
+			} else {
+				if int64(len(dbobjlist)) < total {
+					w.WriteHeader(http.StatusPartialContent)
+				}
+				_, _ = w.Write(data)
+			}
+
+		case "detail":
+			// Detail format: complex API with metadata
+			metaobj := map[string]interface{}{
+				"items":       dbobjlist,
+				"count":       fmt.Sprintf("%d", len(dbobjlist)),
+				"total":       fmt.Sprintf("%d", total),
+				"tablename":   r.URL.Path,
+				"tableprefix": "gsql",
+			}
+			data, err := json.Marshal(metaobj)
+			if err != nil {
+				sendError(w, http.StatusInternalServerError, "json_error", "Could not marshal response", err)
+			} else {
+				if int64(len(dbobjlist)) < total {
+					w.WriteHeader(http.StatusPartialContent)
+				}
+				_, _ = w.Write(data)
+			}
+
+		default:
+			// Simple format: just return the data array (or complex API if requested)
+			if complexAPI {
+				metaobj := map[string]interface{}{
+					"items":       dbobjlist,
+					"count":       fmt.Sprintf("%d", len(dbobjlist)),
+					"total":       fmt.Sprintf("%d", total),
+					"tablename":   r.URL.Path,
+					"tableprefix": "gsql",
+				}
+				data, err := json.Marshal(metaobj)
+				if err != nil {
+					sendError(w, http.StatusInternalServerError, "json_error", "Could not marshal response", err)
+				} else {
+					if int64(len(dbobjlist)) < total {
+						w.WriteHeader(http.StatusPartialContent)
+					}
+					_, _ = w.Write(data)
+				}
+			} else {
+				data, err := json.Marshal(dbobjlist)
+				if err != nil {
+					sendError(w, http.StatusInternalServerError, "json_error", "Could not marshal response", err)
+				} else {
+					if int64(len(dbobjlist)) < total {
+						w.WriteHeader(http.StatusPartialContent)
+					}
+					_, _ = w.Write(data)
+				}
+			}
+		}
+	}
+}
+
+// SqlQuery creates an HTTP handler that executes a SQL query and returns a single record
+func (h *Handler) SqlQuery(sqlquery string, pBlankparms bool) HTTPFuncType {
+	return func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			if err := recover(); err != nil {
+				stack := debug.Stack()
+				logger.Error("Panic in SqlQuery: %v\nStack trace:\n%s", err, string(stack))
+				http.Error(w, fmt.Sprintf("Internal server error: %v", err), http.StatusInternalServerError)
+			}
+		}()
+
+		ctx, cancel := context.WithTimeout(r.Context(), 600*time.Second)
+		defer cancel()
+
+		propQry := make(map[string]string)
+		inputvars := make([]string, 0)
+		metainfo := make(map[string]interface{})
+		variables := make(map[string]interface{})
+		dbobj := make(map[string]interface{})
+		complexAPI := false
+
+		// Get user context from security package
+		userCtx, ok := security.GetUserContext(ctx)
+		if !ok {
+			logger.Warn("No user context found in request")
+			userCtx = &security.UserContext{UserID: 0, UserName: "anonymous"}
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+
+		// Initialize hook context
+		hookCtx := &HookContext{
+			Context:     ctx,
+			Handler:     h,
+			Request:     r,
+			Writer:      w,
+			SQLQuery:    sqlquery,
+			Variables:   variables,
+			InputVars:   inputvars,
+			MetaInfo:    metainfo,
+			PropQry:     propQry,
+			UserContext: userCtx,
+			BlankParams: pBlankparms,
+			ComplexAPI:  complexAPI,
+		}
+
+		// Execute BeforeQuery hook
+		if err := h.hooks.Execute(BeforeQuery, hookCtx); err != nil {
+			logger.Error("BeforeQuery hook failed: %v", err)
+			sendError(w, http.StatusBadRequest, "hook_error", "Hook execution failed", err)
+			return
+		}
+
+		// Check if hook aborted the operation
+		if hookCtx.Abort {
+			if hookCtx.AbortCode == 0 {
+				hookCtx.AbortCode = http.StatusBadRequest
+			}
+			sendError(w, hookCtx.AbortCode, "operation_aborted", hookCtx.AbortMessage, nil)
+			return
+		}
+
+		// Use potentially modified SQL query and variables from hooks
+		sqlquery = hookCtx.SQLQuery
+		variables = hookCtx.Variables
+
+		// Extract input variables from SQL query
+		sqlquery = h.extractInputVariables(sqlquery, &inputvars)
+
+		// Merge URL path parameters
+		sqlquery = h.mergePathParams(r, sqlquery, variables)
+
+		// Parse comprehensive parameters from headers and query string
+		reqParams := h.ParseParameters(r)
+		complexAPI = reqParams.ComplexAPI
+
+		// Merge query string parameters
+		sqlquery = h.mergeQueryParams(r, sqlquery, variables, false, propQry)
+
+		// Merge header parameters
+		sqlquery = h.mergeHeaderParams(r, sqlquery, variables, propQry, &complexAPI)
+		hookCtx.ComplexAPI = complexAPI
+
+		// Apply filters from parsed parameters
+		sqlquery = h.ApplyFilters(sqlquery, reqParams)
+
+		// Apply field selection
+		sqlquery = h.ApplyFieldSelection(sqlquery, reqParams)
+
+		// Apply DISTINCT if requested
+		sqlquery = h.ApplyDistinct(sqlquery, reqParams)
+
+		// Build metainfo
+		metainfo["ipaddress"] = getIPAddress(r)
+		metainfo["url"] = r.RequestURI
+		metainfo["user"] = userCtx.UserName
+		metainfo["rid_user"] = fmt.Sprintf("%d", userCtx.UserID)
+		metainfo["method"] = r.Method
+		metainfo["variables"] = variables
+
+		// Replace meta variables in SQL
+		sqlquery = h.replaceMetaVariables(sqlquery, r, userCtx, metainfo, variables)
+
+		// Apply field filters from headers
+		for k, val := range propQry {
+			kLower := strings.ToLower(k)
+			if strings.HasPrefix(kLower, "x-fieldfilter-") {
+				colname := strings.ReplaceAll(kLower, "x-fieldfilter-", "")
+				if strings.Contains(strings.ToLower(sqlquery), colname) {
+					if val == "" || val == "0" {
+						sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("COALESCE(%s, 0) = %s", ValidSQL(colname, "colname"), ValidSQL(val, "colvalue")))
+					} else {
+						sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("%s = %s", ValidSQL(colname, "colname"), ValidSQL(val, "colvalue")))
+					}
+				}
+			}
+		}
+
+		// Remove unused input variables
+		if pBlankparms {
+			for _, kw := range inputvars {
+				replacement := getReplacementForBlankParam(sqlquery, kw)
+				sqlquery = strings.ReplaceAll(sqlquery, kw, replacement)
+				logger.Debug("Replaced unused variable %s with: %s", kw, replacement)
+			}
+		}
+
+		// Update hook context with latest SQL query and variables
+		hookCtx.SQLQuery = sqlquery
+		hookCtx.Variables = variables
+		hookCtx.InputVars = inputvars
+
+		// Execute query within transaction
+		err := h.db.RunInTransaction(ctx, func(tx common.Database) error {
+			// Execute BeforeSQLExec hook
+			if err := h.hooks.Execute(BeforeSQLExec, hookCtx); err != nil {
+				logger.Error("BeforeSQLExec hook failed: %v", err)
+				sendError(w, http.StatusBadRequest, "hook_error", "Hook execution failed", err)
+				return err
+			}
+			// Use potentially modified SQL query from hook
+			sqlquery = hookCtx.SQLQuery
+
+			// Execute main query
+			rows := make([]map[string]interface{}, 0)
+			if err := tx.Query(ctx, &rows, sqlquery); err != nil {
+				sendError(w, http.StatusBadRequest, "query_failed", "Failed to retrieve records", err)
+				return err
+			}
+
+			if len(rows) > 0 {
+				dbobj = rows[0]
+			}
+
+			// Execute AfterSQLExec hook
+			hookCtx.Result = dbobj
+			if err := h.hooks.Execute(AfterSQLExec, hookCtx); err != nil {
+				logger.Error("AfterSQLExec hook failed: %v", err)
+				sendError(w, http.StatusBadRequest, "hook_error", "Hook execution failed", err)
+				return err
+			}
+			// Use potentially modified result from hook
+			if modifiedResult, ok := hookCtx.Result.(map[string]interface{}); ok {
+				dbobj = modifiedResult
+			}
+
+			return nil
+		})
+
+		if err != nil {
+			logger.Error("Transaction failed: %v", err)
+			return
+		}
+
+		// Execute AfterQuery hook
+		hookCtx.Result = dbobj
+		hookCtx.Error = err
+		if err := h.hooks.Execute(AfterQuery, hookCtx); err != nil {
+			logger.Error("AfterQuery hook failed: %v", err)
+			sendError(w, http.StatusInternalServerError, "hook_error", "Hook execution failed", err)
+			return
+		}
+		// Use potentially modified result from hook
+		if modifiedResult, ok := hookCtx.Result.(map[string]interface{}); ok {
+			dbobj = modifiedResult
+		}
+
+		// Execute BeforeResponse hook
+		hookCtx.Result = dbobj
+		if err := h.hooks.Execute(BeforeResponse, hookCtx); err != nil {
+			logger.Error("BeforeResponse hook failed: %v", err)
+			sendError(w, http.StatusInternalServerError, "hook_error", "Hook execution failed", err)
+			return
+		}
+		// Use potentially modified result from hook
+		if modifiedResult, ok := hookCtx.Result.(map[string]interface{}); ok {
+			dbobj = modifiedResult
+		}
+
+		// Check if response should be root-level data
+		if val, ok := dbobj["root_as_data"]; ok {
+			data, err := json.Marshal(val)
+			if err != nil {
+				sendError(w, http.StatusInternalServerError, "json_error", "Could not marshal response", err)
+			} else {
+				_, _ = w.Write(data)
+			}
+			return
+		}
+
+		// Marshal and send response
+		data, err := json.Marshal(dbobj)
+		if err != nil {
+			sendError(w, http.StatusInternalServerError, "json_error", "Could not marshal response", err)
+		} else {
+			_, _ = w.Write(data)
+		}
+	}
+}
+
+// Helper functions
+
+// extractInputVariables extracts placeholders like [variable] from the SQL query
+func (h *Handler) extractInputVariables(sqlquery string, inputvars *[]string) string {
+
+	testsqlquery := sqlquery
+	for i := 0; i <= strings.Count(sqlquery, "[")*4; i++ {
+		iStart := strings.Index(testsqlquery, "[")
+		if iStart < 0 {
+			break
+		}
+		iEnd := strings.Index(testsqlquery, "]")
+		if iEnd < 0 {
+			break
+		}
+		*inputvars = append(*inputvars, testsqlquery[iStart:iEnd+1])
+		testsqlquery = testsqlquery[iEnd+1:]
+	}
+	return sqlquery
+}
+
+// mergePathParams merges URL path parameters into the SQL query
+func (h *Handler) mergePathParams(r *http.Request, sqlquery string, variables map[string]interface{}) string {
+	// Note: Path parameters would typically come from a router like gorilla/mux
+	// For now, this is a placeholder for path parameter extraction
+	return sqlquery
+}
+
+// mergeQueryParams merges query string parameters into the SQL query
+func (h *Handler) mergeQueryParams(r *http.Request, sqlquery string, variables map[string]interface{}, allowFilter bool, propQry map[string]string) string {
+	for parmk, parmv := range r.URL.Query() {
+		if len(parmk) == 0 || len(parmv) == 0 {
+			continue
+		}
+
+		val := parmv[0]
+		dec, err := restheadspec.DecodeParam(val)
+		if err == nil {
+			val = dec
+		}
+
+		kword := fmt.Sprintf("[%s]", parmk)
+		variables[parmk] = val
+
+		// Replace in SQL if placeholder exists
+		if strings.Contains(sqlquery, kword) && len(val) > 0 {
+			if strings.HasPrefix(parmk, "p-") {
+				sqlquery = strings.ReplaceAll(sqlquery, kword, val)
+			}
+		}
+
+		// Add to propQry for x- prefixed params
+		if strings.HasPrefix(parmk, "x-") {
+			propQry[parmk] = val
+		}
+
+		// Apply filters if allowed
+		if allowFilter && len(parmk) > 1 && strings.Contains(strings.ToLower(sqlquery), strings.ToLower(parmk)) {
+			if len(parmv) > 1 {
+				sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("%s IN (%s)", ValidSQL(parmk, "colname"), strings.Join(parmv, ",")))
+			} else {
+				if strings.Contains(val, "match=") {
+					colval := strings.ReplaceAll(val, "match=", "")
+					if colval != "*" {
+						sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("%s ILIKE '%%%s%%'", ValidSQL(parmk, "colname"), ValidSQL(colval, "colvalue")))
+					}
+				} else if val == "" || val == "0" {
+					sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("(%[1]s = %[2]s OR %[1]s IS NULL)", ValidSQL(parmk, "colname"), ValidSQL(val, "colvalue")))
+				} else {
+					if IsNumeric(val) {
+						sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("%s = %s", ValidSQL(parmk, "colname"), ValidSQL(val, "colvalue")))
+					} else {
+						sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("%s = '%s'", ValidSQL(parmk, "colname"), ValidSQL(val, "colvalue")))
+					}
+				}
+			}
+		}
+	}
+	return sqlquery
+}
+
+// mergeHeaderParams merges HTTP header parameters into the SQL query
+func (h *Handler) mergeHeaderParams(r *http.Request, sqlquery string, variables map[string]interface{}, propQry map[string]string, complexAPI *bool) string {
+	for kc, v := range r.Header {
+		k := strings.ToLower(kc)
+		if !strings.HasPrefix(k, "x-") || len(v) == 0 {
+			continue
+		}
+
+		val := v[0]
+		dec, err := restheadspec.DecodeParam(val)
+		if err == nil {
+			val = dec
+		}
+
+		variables[k] = val
+		propQry[k] = val
+
+		kword := fmt.Sprintf("[%s]", k)
+		if strings.Contains(sqlquery, kword) {
+			sqlquery = strings.ReplaceAll(sqlquery, kword, val)
+		}
+
+		// Handle special headers
+		if strings.Contains(k, "x-fieldfilter-") {
+			colname := strings.ReplaceAll(k, "x-fieldfilter-", "")
+			if val == "" || val == "0" {
+				sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("COALESCE(%s, 0) = %s", ValidSQL(colname, "colname"), ValidSQL(val, "colvalue")))
+			} else {
+				sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("%s = %s", ValidSQL(colname, "colname"), ValidSQL(val, "colvalue")))
+			}
+		}
+
+		if strings.Contains(k, "x-searchfilter-") {
+			colname := strings.ReplaceAll(k, "x-searchfilter-", "")
+			sval := strings.ReplaceAll(val, "'", "")
+			if sval != "" {
+				sqlquery = sqlQryWhere(sqlquery, fmt.Sprintf("%s ILIKE '%%%s%%'", ValidSQL(colname, "colname"), ValidSQL(sval, "colvalue")))
+			}
+		}
+
+		if strings.Contains(k, "x-custom-sql-w") {
+			colval := ValidSQL(val, "select")
+			if len(colval) > 0 {
+				sqlquery = sqlQryWhere(sqlquery, colval)
+			}
+		}
+
+		if strings.Contains(k, "x-simpleapi") {
+			*complexAPI = !strings.EqualFold(val, "1") && !strings.EqualFold(val, "true")
+		}
+	}
+	return sqlquery
+}
+
+// replaceMetaVariables replaces meta variables like [rid_user], [user], etc. in the SQL query
+func (h *Handler) replaceMetaVariables(sqlquery string, r *http.Request, userCtx *security.UserContext, metainfo map[string]interface{}, variables map[string]interface{}) string {
+	if strings.Contains(sqlquery, "[p_meta_default]") {
+		data, _ := json.Marshal(metainfo)
+		sqlquery = strings.ReplaceAll(sqlquery, "[p_meta_default]", fmt.Sprintf("'%s'::jsonb", string(data)))
+	}
+
+	if strings.Contains(sqlquery, "[json_variables]") {
+		data, _ := json.Marshal(variables)
+		sqlquery = strings.ReplaceAll(sqlquery, "[json_variables]", fmt.Sprintf("'%s'::jsonb", string(data)))
+	}
+
+	if strings.Contains(sqlquery, "[rid_user]") {
+		sqlquery = strings.ReplaceAll(sqlquery, "[rid_user]", fmt.Sprintf("%d", userCtx.UserID))
+	}
+
+	if strings.Contains(sqlquery, "[user]") {
+		sqlquery = strings.ReplaceAll(sqlquery, "[user]", fmt.Sprintf("'%s'", userCtx.UserName))
+	}
+
+	if strings.Contains(sqlquery, "[rid_session]") {
+		sessionID, _ := strconv.ParseInt(userCtx.SessionID, 10, 64)
+		sqlquery = strings.ReplaceAll(sqlquery, "[rid_session]", fmt.Sprintf("%d", sessionID))
+	}
+
+	if strings.Contains(sqlquery, "[method]") {
+		sqlquery = strings.ReplaceAll(sqlquery, "[method]", r.Method)
+	}
+
+	if strings.Contains(sqlquery, "[post_body]") {
+		bodystr := ""
+		if r.Method == "POST" || r.Method == "PUT" {
+			if r.Body != nil {
+				contents, err := io.ReadAll(r.Body)
+				if err == nil {
+					bodystr = string(contents)
+				}
+			}
+		}
+		sqlquery = strings.ReplaceAll(sqlquery, "[post_body]", fmt.Sprintf("'%s'", bodystr))
+	}
+
+	return sqlquery
+}
+
+// parsePaginationParams extracts sort, limit, and offset parameters from request
+func (h *Handler) parsePaginationParams(r *http.Request) (sortcols string, limit, offset int) {
+	limit = 20
+	offset = 0
+
+	if sortStr := r.URL.Query().Get("sort"); sortStr != "" {
+		sortcols = sortStr
+	}
+
+	if limitStr := r.URL.Query().Get("limit"); limitStr != "" {
+		if l, err := strconv.Atoi(limitStr); err == nil && l > 0 {
+			limit = l
+		}
+	}
+
+	if offsetStr := r.URL.Query().Get("offset"); offsetStr != "" {
+		if o, err := strconv.Atoi(offsetStr); err == nil && o >= 0 {
+			offset = o
+		}
+	}
+
+	return
+}
+
+// ValidSQL validates and sanitizes SQL input to prevent injection
+// mode can be: "colname", "colvalue", "select"
+func ValidSQL(input, mode string) string {
+	// Remove dangerous characters based on mode
+	switch mode {
+	case "colname":
+		// For column names, only allow alphanumeric, underscore, and dot
+		reg := regexp.MustCompile(`[^a-zA-Z0-9_\.]`)
+		return reg.ReplaceAllString(input, "")
+	case "colvalue":
+		// For column values, escape single quotes
+		return strings.ReplaceAll(input, "'", "''")
+	case "select":
+		// For SELECT clauses, be more permissive but still safe
+		// Remove semicolons and common SQL injection patterns
+		dangerous := []string{";", "--", "/*", "*/", "xp_", "sp_", "DROP ", "DELETE ", "TRUNCATE ", "UPDATE ", "INSERT "}
+		result := input
+		for _, d := range dangerous {
+			result = strings.ReplaceAll(result, d, "")
+			result = strings.ReplaceAll(result, strings.ToLower(d), "")
+			result = strings.ReplaceAll(result, strings.ToUpper(d), "")
+		}
+		return result
+	default:
+		return input
+	}
+}
+
+// sqlQryWhere adds a WHERE clause to a SQL query or appends to existing WHERE with AND
+func sqlQryWhere(sqlquery, condition string) string {
+	lowerQuery := strings.ToLower(sqlquery)
+	wherePos := strings.Index(lowerQuery, " where ")
+	groupPos := strings.Index(lowerQuery, " group by")
+	orderPos := strings.Index(lowerQuery, " order by")
+	limitPos := strings.Index(lowerQuery, " limit ")
+
+	// Find the insertion point (before GROUP BY, ORDER BY, or LIMIT)
+	insertPos := len(sqlquery)
+	if groupPos > 0 && groupPos < insertPos {
+		insertPos = groupPos
+	}
+	if orderPos > 0 && orderPos < insertPos {
+		insertPos = orderPos
+	}
+	if limitPos > 0 && limitPos < insertPos {
+		insertPos = limitPos
+	}
+
+	if wherePos > 0 {
+		// WHERE exists, add AND condition before GROUP BY / ORDER BY / LIMIT
+		before := sqlquery[:insertPos]
+		after := sqlquery[insertPos:]
+		return fmt.Sprintf("%s AND %s %s", before, condition, after)
+	} else {
+		// No WHERE exists, add it before GROUP BY / ORDER BY / LIMIT
+		before := sqlquery[:insertPos]
+		after := sqlquery[insertPos:]
+		return fmt.Sprintf("%s WHERE %s %s", before, condition, after)
+	}
+}
+
+// IsNumeric checks if a string contains only numeric characters
+func IsNumeric(s string) bool {
+	_, err := strconv.ParseFloat(s, 64)
+	return err == nil
+}
+
+// getReplacementForBlankParam determines the replacement value for an unused parameter
+// based on whether it appears within quotes in the SQL query.
+// It checks for PostgreSQL quotes: single quotes (”) and dollar quotes ($...$)
+func getReplacementForBlankParam(sqlquery, param string) string {
+	// Find the parameter in the query
+	idx := strings.Index(sqlquery, param)
+	if idx < 0 {
+		return ""
+	}
+
+	// Check characters immediately before and after the parameter
+	var charBefore, charAfter byte
+
+	if idx > 0 {
+		charBefore = sqlquery[idx-1]
+	}
+
+	endIdx := idx + len(param)
+	if endIdx < len(sqlquery) {
+		charAfter = sqlquery[endIdx]
+	}
+
+	// Check if parameter is surrounded by quotes (single quote or dollar sign for PostgreSQL dollar-quoted strings)
+	if (charBefore == '\'' || charBefore == '$') && (charAfter == '\'' || charAfter == '$') {
+		// Parameter is in quotes, return empty string
+		return ""
+	}
+
+	// Parameter is not in quotes, return NULL
+	return "NULL"
+}
+
+// makeResultReceiver creates a slice of interface{} pointers for scanning SQL rows
+// func makeResultReceiver(length int) []interface{} {
+// 	result := make([]interface{}, length)
+// 	for i := 0; i < length; i++ {
+// 		var v interface{}
+// 		result[i] = &v
+// 	}
+// 	return result
+// }
+
+// getIPAddress extracts the real IP address from the request
+func getIPAddress(r *http.Request) string {
+	if forwarded := r.Header.Get("X-Forwarded-For"); forwarded != "" {
+		// X-Forwarded-For can contain multiple IPs, take the first one
+		ips := strings.Split(forwarded, ",")
+		return strings.TrimSpace(ips[0])
+	}
+	if realIP := r.Header.Get("X-Real-IP"); realIP != "" {
+		return realIP
+	}
+	return r.RemoteAddr
+}
+
+// sendError sends a JSON error response
+func sendError(w http.ResponseWriter, status int, code, message string, err error) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+
+	errObj := common.APIError{
+		Code:    code,
+		Message: message,
+	}
+	if err != nil {
+		errObj.Detail = err.Error()
+	}
+
+	data, _ := json.Marshal(map[string]interface{}{
+		"success": false,
+		"error":   errObj,
+	})
+	_, _ = w.Write(data)
+}

pkg/funcspec/function_api_test.go

@@ -0,0 +1,899 @@
+package funcspec
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+	"github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+// MockDatabase implements common.Database interface for testing
+type MockDatabase struct {
+	QueryFunc          func(ctx context.Context, dest interface{}, query string, args ...interface{}) error
+	ExecFunc           func(ctx context.Context, query string, args ...interface{}) (common.Result, error)
+	RunInTransactionFunc func(ctx context.Context, fn func(common.Database) error) error
+}
+
+func (m *MockDatabase) NewSelect() common.SelectQuery {
+	return nil
+}
+
+func (m *MockDatabase) NewInsert() common.InsertQuery {
+	return nil
+}
+
+func (m *MockDatabase) NewUpdate() common.UpdateQuery {
+	return nil
+}
+
+func (m *MockDatabase) NewDelete() common.DeleteQuery {
+	return nil
+}
+
+func (m *MockDatabase) Exec(ctx context.Context, query string, args ...interface{}) (common.Result, error) {
+	if m.ExecFunc != nil {
+		return m.ExecFunc(ctx, query, args...)
+	}
+	return &MockResult{rows: 0}, nil
+}
+
+func (m *MockDatabase) Query(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+	if m.QueryFunc != nil {
+		return m.QueryFunc(ctx, dest, query, args...)
+	}
+	return nil
+}
+
+func (m *MockDatabase) BeginTx(ctx context.Context) (common.Database, error) {
+	return m, nil
+}
+
+func (m *MockDatabase) CommitTx(ctx context.Context) error {
+	return nil
+}
+
+func (m *MockDatabase) RollbackTx(ctx context.Context) error {
+	return nil
+}
+
+func (m *MockDatabase) RunInTransaction(ctx context.Context, fn func(common.Database) error) error {
+	if m.RunInTransactionFunc != nil {
+		return m.RunInTransactionFunc(ctx, fn)
+	}
+	return fn(m)
+}
+
+// MockResult implements common.Result interface for testing
+type MockResult struct {
+	rows int64
+	id   int64
+}
+
+func (m *MockResult) RowsAffected() int64 {
+	return m.rows
+}
+
+func (m *MockResult) LastInsertId() (int64, error) {
+	return m.id, nil
+}
+
+// Helper function to create a test request with user context
+func createTestRequest(method, path string, queryParams map[string]string, headers map[string]string, body []byte) *http.Request {
+	u, _ := url.Parse(path)
+	if queryParams != nil {
+		q := u.Query()
+		for k, v := range queryParams {
+			q.Set(k, v)
+		}
+		u.RawQuery = q.Encode()
+	}
+
+	var bodyReader *bytes.Reader
+	if body != nil {
+		bodyReader = bytes.NewReader(body)
+	} else {
+		bodyReader = bytes.NewReader([]byte{})
+	}
+
+	req := httptest.NewRequest(method, u.String(), bodyReader)
+
+	if headers != nil {
+		for k, v := range headers {
+			req.Header.Set(k, v)
+		}
+	}
+
+	// Add user context
+	userCtx := &security.UserContext{
+		UserID:    1,
+		UserName:  "testuser",
+		SessionID: "test-session-123",
+	}
+	ctx := context.WithValue(req.Context(), security.UserContextKey, userCtx)
+	req = req.WithContext(ctx)
+
+	return req
+}
+
+// TestNewHandler tests handler creation
+func TestNewHandler(t *testing.T) {
+	db := &MockDatabase{}
+	handler := NewHandler(db)
+
+	if handler == nil {
+		t.Fatal("Expected handler to be created, got nil")
+	}
+
+	if handler.db != db {
+		t.Error("Expected handler to have the provided database")
+	}
+
+	if handler.hooks == nil {
+		t.Error("Expected handler to have a hook registry")
+	}
+}
+
+// TestHandlerHooks tests the Hooks method
+func TestHandlerHooks(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+	hooks := handler.Hooks()
+
+	if hooks == nil {
+		t.Fatal("Expected hooks registry to be non-nil")
+	}
+
+	// Should return the same instance
+	hooks2 := handler.Hooks()
+	if hooks != hooks2 {
+		t.Error("Expected Hooks() to return the same registry instance")
+	}
+}
+
+// TestExtractInputVariables tests the extractInputVariables function
+func TestExtractInputVariables(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name          string
+		sqlQuery      string
+		expectedVars  []string
+	}{
+		{
+			name:         "No variables",
+			sqlQuery:     "SELECT * FROM users",
+			expectedVars: []string{},
+		},
+		{
+			name:         "Single variable",
+			sqlQuery:     "SELECT * FROM users WHERE id = [user_id]",
+			expectedVars: []string{"[user_id]"},
+		},
+		{
+			name:         "Multiple variables",
+			sqlQuery:     "SELECT * FROM users WHERE id = [user_id] AND name = [user_name]",
+			expectedVars: []string{"[user_id]", "[user_name]"},
+		},
+		{
+			name:         "Nested brackets",
+			sqlQuery:     "SELECT * FROM users WHERE data::jsonb @> '[field]'::jsonb AND id = [user_id]",
+			expectedVars: []string{"[field]", "[user_id]"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			inputvars := make([]string, 0)
+			result := handler.extractInputVariables(tt.sqlQuery, &inputvars)
+
+			if result != tt.sqlQuery {
+				t.Errorf("Expected SQL query to be unchanged, got %s", result)
+			}
+
+			if len(inputvars) != len(tt.expectedVars) {
+				t.Errorf("Expected %d variables, got %d: %v", len(tt.expectedVars), len(inputvars), inputvars)
+				return
+			}
+
+			for i, expected := range tt.expectedVars {
+				if inputvars[i] != expected {
+					t.Errorf("Expected variable %d to be %s, got %s", i, expected, inputvars[i])
+				}
+			}
+		})
+	}
+}
+
+// TestValidSQL tests the SQL sanitization function
+func TestValidSQL(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		mode     string
+		expected string
+	}{
+		{
+			name:     "Column name with valid characters",
+			input:    "user_id",
+			mode:     "colname",
+			expected: "user_id",
+		},
+		{
+			name:     "Column name with dots (table.column)",
+			input:    "users.user_id",
+			mode:     "colname",
+			expected: "users.user_id",
+		},
+		{
+			name:     "Column name with SQL injection attempt",
+			input:    "id'; DROP TABLE users--",
+			mode:     "colname",
+			expected: "idDROPTABLEusers",
+		},
+		{
+			name:     "Column value with single quotes",
+			input:    "O'Brien",
+			mode:     "colvalue",
+			expected: "O''Brien",
+		},
+		{
+			name:     "Select with dangerous keywords",
+			input:    "name, email; DROP TABLE users",
+			mode:     "select",
+			expected: "name, email TABLE users",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := ValidSQL(tt.input, tt.mode)
+			if result != tt.expected {
+				t.Errorf("ValidSQL(%q, %q) = %q, expected %q", tt.input, tt.mode, result, tt.expected)
+			}
+		})
+	}
+}
+
+// TestIsNumeric tests the IsNumeric function
+func TestIsNumeric(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected bool
+	}{
+		{"123", true},
+		{"123.45", true},
+		{"-123", true},
+		{"-123.45", true},
+		{"0", true},
+		{"abc", false},
+		{"12.34.56", false},
+		{"", false},
+		{"123abc", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.input, func(t *testing.T) {
+			result := IsNumeric(tt.input)
+			if result != tt.expected {
+				t.Errorf("IsNumeric(%q) = %v, expected %v", tt.input, result, tt.expected)
+			}
+		})
+	}
+}
+
+// TestSqlQryWhere tests the WHERE clause manipulation
+func TestSqlQryWhere(t *testing.T) {
+	tests := []struct {
+		name      string
+		sqlQuery  string
+		condition string
+		expected  string
+	}{
+		{
+			name:      "Add WHERE to query without WHERE",
+			sqlQuery:  "SELECT * FROM users",
+			condition: "status = 'active'",
+			expected:  "SELECT * FROM users WHERE status = 'active' ",
+		},
+		{
+			name:      "Add AND to query with existing WHERE",
+			sqlQuery:  "SELECT * FROM users WHERE id > 0",
+			condition: "status = 'active'",
+			expected:  "SELECT * FROM users WHERE id > 0 AND status = 'active' ",
+		},
+		{
+			name:      "Add WHERE before ORDER BY",
+			sqlQuery:  "SELECT * FROM users ORDER BY name",
+			condition: "status = 'active'",
+			expected:  "SELECT * FROM users WHERE status = 'active'  ORDER BY name",
+		},
+		{
+			name:      "Add WHERE before GROUP BY",
+			sqlQuery:  "SELECT COUNT(*) FROM users GROUP BY department",
+			condition: "status = 'active'",
+			expected:  "SELECT COUNT(*) FROM users WHERE status = 'active'  GROUP BY department",
+		},
+		{
+			name:      "Add WHERE before LIMIT",
+			sqlQuery:  "SELECT * FROM users LIMIT 10",
+			condition: "status = 'active'",
+			expected:  "SELECT * FROM users WHERE status = 'active'  LIMIT 10",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := sqlQryWhere(tt.sqlQuery, tt.condition)
+			if result != tt.expected {
+				t.Errorf("sqlQryWhere() = %q, expected %q", result, tt.expected)
+			}
+		})
+	}
+}
+
+// TestGetIPAddress tests IP address extraction
+func TestGetIPAddress(t *testing.T) {
+	tests := []struct {
+		name      string
+		setupReq  func() *http.Request
+		expected  string
+	}{
+		{
+			name: "X-Forwarded-For header",
+			setupReq: func() *http.Request {
+				req := httptest.NewRequest("GET", "/test", nil)
+				req.Header.Set("X-Forwarded-For", "192.168.1.100, 10.0.0.1")
+				return req
+			},
+			expected: "192.168.1.100",
+		},
+		{
+			name: "X-Real-IP header",
+			setupReq: func() *http.Request {
+				req := httptest.NewRequest("GET", "/test", nil)
+				req.Header.Set("X-Real-IP", "192.168.1.200")
+				return req
+			},
+			expected: "192.168.1.200",
+		},
+		{
+			name: "RemoteAddr fallback",
+			setupReq: func() *http.Request {
+				req := httptest.NewRequest("GET", "/test", nil)
+				req.RemoteAddr = "192.168.1.1:12345"
+				return req
+			},
+			expected: "192.168.1.1:12345",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := tt.setupReq()
+			result := getIPAddress(req)
+			if result != tt.expected {
+				t.Errorf("getIPAddress() = %q, expected %q", result, tt.expected)
+			}
+		})
+	}
+}
+
+// TestParsePaginationParams tests pagination parameter parsing
+func TestParsePaginationParams(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name           string
+		queryParams    map[string]string
+		expectedSort   string
+		expectedLimit  int
+		expectedOffset int
+	}{
+		{
+			name:           "No parameters - defaults",
+			queryParams:    map[string]string{},
+			expectedSort:   "",
+			expectedLimit:  20,
+			expectedOffset: 0,
+		},
+		{
+			name: "All parameters provided",
+			queryParams: map[string]string{
+				"sort":   "name,-created_at",
+				"limit":  "100",
+				"offset": "50",
+			},
+			expectedSort:   "name,-created_at",
+			expectedLimit:  100,
+			expectedOffset: 50,
+		},
+		{
+			name: "Invalid limit - use default",
+			queryParams: map[string]string{
+				"limit": "invalid",
+			},
+			expectedSort:   "",
+			expectedLimit:  20,
+			expectedOffset: 0,
+		},
+		{
+			name: "Negative offset - use default",
+			queryParams: map[string]string{
+				"offset": "-10",
+			},
+			expectedSort:   "",
+			expectedLimit:  20,
+			expectedOffset: 0,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := createTestRequest("GET", "/test", tt.queryParams, nil, nil)
+			sort, limit, offset := handler.parsePaginationParams(req)
+
+			if sort != tt.expectedSort {
+				t.Errorf("Expected sort=%q, got %q", tt.expectedSort, sort)
+			}
+			if limit != tt.expectedLimit {
+				t.Errorf("Expected limit=%d, got %d", tt.expectedLimit, limit)
+			}
+			if offset != tt.expectedOffset {
+				t.Errorf("Expected offset=%d, got %d", tt.expectedOffset, offset)
+			}
+		})
+	}
+}
+
+// TestSqlQuery tests the SqlQuery handler for single record queries
+func TestSqlQuery(t *testing.T) {
+	tests := []struct {
+		name           string
+		sqlQuery       string
+		blankParams    bool
+		queryParams    map[string]string
+		headers        map[string]string
+		setupDB        func() *MockDatabase
+		expectedStatus int
+		validateResp   func(t *testing.T, body []byte)
+	}{
+		{
+			name:        "Basic query - returns single record",
+			sqlQuery:    "SELECT * FROM users WHERE id = 1",
+			blankParams: false,
+			setupDB: func() *MockDatabase {
+				return &MockDatabase{
+					RunInTransactionFunc: func(ctx context.Context, fn func(common.Database) error) error {
+						db := &MockDatabase{
+							QueryFunc: func(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+								rows := dest.(*[]map[string]interface{})
+								*rows = []map[string]interface{}{
+									{"id": float64(1), "name": "Test User", "email": "test@example.com"},
+								}
+								return nil
+							},
+						}
+						return fn(db)
+					},
+				}
+			},
+			expectedStatus: 200,
+			validateResp: func(t *testing.T, body []byte) {
+				var result map[string]interface{}
+				if err := json.Unmarshal(body, &result); err != nil {
+					t.Fatalf("Failed to unmarshal response: %v", err)
+				}
+				if result["name"] != "Test User" {
+					t.Errorf("Expected name='Test User', got %v", result["name"])
+				}
+			},
+		},
+		{
+			name:        "Query with no results",
+			sqlQuery:    "SELECT * FROM users WHERE id = 999",
+			blankParams: false,
+			setupDB: func() *MockDatabase {
+				return &MockDatabase{
+					RunInTransactionFunc: func(ctx context.Context, fn func(common.Database) error) error {
+						db := &MockDatabase{
+							QueryFunc: func(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+								// Return empty array
+								return nil
+							},
+						}
+						return fn(db)
+					},
+				}
+			},
+			expectedStatus: 200,
+			validateResp: func(t *testing.T, body []byte) {
+				var result map[string]interface{}
+				if err := json.Unmarshal(body, &result); err != nil {
+					t.Fatalf("Failed to unmarshal response: %v", err)
+				}
+				if len(result) != 0 {
+					t.Errorf("Expected empty result, got %v", result)
+				}
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			db := tt.setupDB()
+			handler := NewHandler(db)
+
+			req := createTestRequest("GET", "/test", tt.queryParams, tt.headers, nil)
+			w := httptest.NewRecorder()
+
+			handlerFunc := handler.SqlQuery(tt.sqlQuery, tt.blankParams)
+			handlerFunc(w, req)
+
+			if w.Code != tt.expectedStatus {
+				t.Errorf("Expected status %d, got %d", tt.expectedStatus, w.Code)
+			}
+
+			if tt.validateResp != nil {
+				tt.validateResp(t, w.Body.Bytes())
+			}
+		})
+	}
+}
+
+// TestSqlQueryList tests the SqlQueryList handler for list queries
+func TestSqlQueryList(t *testing.T) {
+	tests := []struct {
+		name           string
+		sqlQuery       string
+		noCount        bool
+		blankParams    bool
+		allowFilter    bool
+		queryParams    map[string]string
+		headers        map[string]string
+		setupDB        func() *MockDatabase
+		expectedStatus int
+		validateResp   func(t *testing.T, w *httptest.ResponseRecorder)
+	}{
+		{
+			name:        "Basic list query",
+			sqlQuery:    "SELECT * FROM users",
+			noCount:     false,
+			blankParams: false,
+			allowFilter: false,
+			setupDB: func() *MockDatabase {
+				return &MockDatabase{
+					RunInTransactionFunc: func(ctx context.Context, fn func(common.Database) error) error {
+						callCount := 0
+						db := &MockDatabase{
+							QueryFunc: func(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+								callCount++
+								if strings.Contains(query, "COUNT") {
+									// Count query
+									countResult := dest.(*struct{ Count int64 })
+									countResult.Count = 2
+								} else {
+									// Main query
+									rows := dest.(*[]map[string]interface{})
+									*rows = []map[string]interface{}{
+										{"id": float64(1), "name": "User 1"},
+										{"id": float64(2), "name": "User 2"},
+									}
+								}
+								return nil
+							},
+						}
+						return fn(db)
+					},
+				}
+			},
+			expectedStatus: 200,
+			validateResp: func(t *testing.T, w *httptest.ResponseRecorder) {
+				var result []map[string]interface{}
+				if err := json.Unmarshal(w.Body.Bytes(), &result); err != nil {
+					t.Fatalf("Failed to unmarshal response: %v", err)
+				}
+				if len(result) != 2 {
+					t.Errorf("Expected 2 results, got %d", len(result))
+				}
+
+				// Check Content-Range header
+				contentRange := w.Header().Get("Content-Range")
+				if !strings.Contains(contentRange, "2") {
+					t.Errorf("Expected Content-Range to contain total count, got: %s", contentRange)
+				}
+			},
+		},
+		{
+			name:        "List query with noCount",
+			sqlQuery:    "SELECT * FROM users",
+			noCount:     true,
+			blankParams: false,
+			allowFilter: false,
+			setupDB: func() *MockDatabase {
+				return &MockDatabase{
+					RunInTransactionFunc: func(ctx context.Context, fn func(common.Database) error) error {
+						db := &MockDatabase{
+							QueryFunc: func(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+								if strings.Contains(query, "COUNT") {
+									t.Error("Count query should not be executed when noCount is true")
+								}
+								rows := dest.(*[]map[string]interface{})
+								*rows = []map[string]interface{}{
+									{"id": float64(1), "name": "User 1"},
+								}
+								return nil
+							},
+						}
+						return fn(db)
+					},
+				}
+			},
+			expectedStatus: 200,
+			validateResp: func(t *testing.T, w *httptest.ResponseRecorder) {
+				var result []map[string]interface{}
+				if err := json.Unmarshal(w.Body.Bytes(), &result); err != nil {
+					t.Fatalf("Failed to unmarshal response: %v", err)
+				}
+				if len(result) != 1 {
+					t.Errorf("Expected 1 result, got %d", len(result))
+				}
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			db := tt.setupDB()
+			handler := NewHandler(db)
+
+			req := createTestRequest("GET", "/test", tt.queryParams, tt.headers, nil)
+			w := httptest.NewRecorder()
+
+			handlerFunc := handler.SqlQueryList(tt.sqlQuery, tt.noCount, tt.blankParams, tt.allowFilter)
+			handlerFunc(w, req)
+
+			if w.Code != tt.expectedStatus {
+				t.Errorf("Expected status %d, got %d. Body: %s", tt.expectedStatus, w.Code, w.Body.String())
+			}
+
+			if tt.validateResp != nil {
+				tt.validateResp(t, w)
+			}
+		})
+	}
+}
+
+// TestMergeQueryParams tests query parameter merging
+func TestMergeQueryParams(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name          string
+		sqlQuery      string
+		queryParams   map[string]string
+		allowFilter   bool
+		expectedQuery string
+		checkVars     func(t *testing.T, vars map[string]interface{})
+	}{
+		{
+			name:        "Replace placeholder with parameter",
+			sqlQuery:    "SELECT * FROM users WHERE id = [user_id]",
+			queryParams: map[string]string{"p-user_id": "123"},
+			allowFilter: false,
+			checkVars: func(t *testing.T, vars map[string]interface{}) {
+				if vars["p-user_id"] != "123" {
+					t.Errorf("Expected p-user_id=123, got %v", vars["p-user_id"])
+				}
+			},
+		},
+		{
+			name:        "Add filter when allowed",
+			sqlQuery:    "SELECT * FROM users",
+			queryParams: map[string]string{"status": "active"},
+			allowFilter: true,
+			checkVars: func(t *testing.T, vars map[string]interface{}) {
+				if vars["status"] != "active" {
+					t.Errorf("Expected status=active, got %v", vars["status"])
+				}
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := createTestRequest("GET", "/test", tt.queryParams, nil, nil)
+			variables := make(map[string]interface{})
+			propQry := make(map[string]string)
+
+			result := handler.mergeQueryParams(req, tt.sqlQuery, variables, tt.allowFilter, propQry)
+
+			if result == "" {
+				t.Error("Expected non-empty SQL query result")
+			}
+
+			if tt.checkVars != nil {
+				tt.checkVars(t, variables)
+			}
+		})
+	}
+}
+
+// TestMergeHeaderParams tests header parameter merging
+func TestMergeHeaderParams(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name          string
+		sqlQuery      string
+		headers       map[string]string
+		expectedQuery string
+		checkVars     func(t *testing.T, vars map[string]interface{})
+	}{
+		{
+			name:     "Field filter header",
+			sqlQuery: "SELECT * FROM users",
+			headers:  map[string]string{"X-FieldFilter-Status": "1"},
+			checkVars: func(t *testing.T, vars map[string]interface{}) {
+				if vars["x-fieldfilter-status"] != "1" {
+					t.Errorf("Expected x-fieldfilter-status=1, got %v", vars["x-fieldfilter-status"])
+				}
+			},
+		},
+		{
+			name:     "Search filter header",
+			sqlQuery: "SELECT * FROM users",
+			headers:  map[string]string{"X-SearchFilter-Name": "john"},
+			checkVars: func(t *testing.T, vars map[string]interface{}) {
+				if vars["x-searchfilter-name"] != "john" {
+					t.Errorf("Expected x-searchfilter-name=john, got %v", vars["x-searchfilter-name"])
+				}
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := createTestRequest("GET", "/test", nil, tt.headers, nil)
+			variables := make(map[string]interface{})
+			propQry := make(map[string]string)
+			complexAPI := false
+
+			result := handler.mergeHeaderParams(req, tt.sqlQuery, variables, propQry, &complexAPI)
+
+			if result == "" {
+				t.Error("Expected non-empty SQL query result")
+			}
+
+			if tt.checkVars != nil {
+				tt.checkVars(t, variables)
+			}
+		})
+	}
+}
+
+// TestReplaceMetaVariables tests meta variable replacement
+func TestReplaceMetaVariables(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	userCtx := &security.UserContext{
+		UserID:    123,
+		UserName:  "testuser",
+		SessionID: "456",
+	}
+
+	metainfo := map[string]interface{}{
+		"ipaddress": "192.168.1.1",
+		"url":       "/api/test",
+	}
+
+	variables := map[string]interface{}{
+		"param1": "value1",
+	}
+
+	tests := []struct {
+		name          string
+		sqlQuery      string
+		expectedCheck func(result string) bool
+	}{
+		{
+			name:     "Replace [rid_user]",
+			sqlQuery: "SELECT * FROM users WHERE created_by = [rid_user]",
+			expectedCheck: func(result string) bool {
+				return strings.Contains(result, "123")
+			},
+		},
+		{
+			name:     "Replace [user]",
+			sqlQuery: "SELECT * FROM audit WHERE username = [user]",
+			expectedCheck: func(result string) bool {
+				return strings.Contains(result, "'testuser'")
+			},
+		},
+		{
+			name:     "Replace [rid_session]",
+			sqlQuery: "SELECT * FROM sessions WHERE session_id = [rid_session]",
+			expectedCheck: func(result string) bool {
+				return strings.Contains(result, "456")
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := createTestRequest("GET", "/test", nil, nil, nil)
+			result := handler.replaceMetaVariables(tt.sqlQuery, req, userCtx, metainfo, variables)
+
+			if !tt.expectedCheck(result) {
+				t.Errorf("Meta variable replacement failed. Query: %s", result)
+			}
+		})
+	}
+}
+
+// TestGetReplacementForBlankParam tests the blank parameter replacement logic
+func TestGetReplacementForBlankParam(t *testing.T) {
+	tests := []struct {
+		name     string
+		sqlQuery string
+		param    string
+		expected string
+	}{
+		{
+			name:     "Parameter in single quotes",
+			sqlQuery: "SELECT * FROM users WHERE name = '[username]'",
+			param:    "[username]",
+			expected: "",
+		},
+		{
+			name:     "Parameter in dollar quotes",
+			sqlQuery: "SELECT * FROM users WHERE data = $[jsondata]$",
+			param:    "[jsondata]",
+			expected: "",
+		},
+		{
+			name:     "Parameter not in quotes",
+			sqlQuery: "SELECT * FROM users WHERE id = [user_id]",
+			param:    "[user_id]",
+			expected: "NULL",
+		},
+		{
+			name:     "Parameter not in quotes with AND",
+			sqlQuery: "SELECT * FROM users WHERE id = [user_id] AND status = 1",
+			param:    "[user_id]",
+			expected: "NULL",
+		},
+		{
+			name:     "Parameter in mixed quote context - before quote",
+			sqlQuery: "SELECT * FROM users WHERE id = [user_id] AND name = 'test'",
+			param:    "[user_id]",
+			expected: "NULL",
+		},
+		{
+			name:     "Parameter in mixed quote context - in quotes",
+			sqlQuery: "SELECT * FROM users WHERE name = '[username]' AND id = 1",
+			param:    "[username]",
+			expected: "",
+		},
+		{
+			name:     "Parameter with dollar quote tag",
+			sqlQuery: "SELECT * FROM users WHERE body = $tag$[content]$tag$",
+			param:    "[content]",
+			expected: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := getReplacementForBlankParam(tt.sqlQuery, tt.param)
+			if result != tt.expected {
+				t.Errorf("Expected replacement '%s', got '%s' for query: %s", tt.expected, result, tt.sqlQuery)
+			}
+		})
+	}
+}

pkg/funcspec/hooks.go

@@ -0,0 +1,160 @@
+package funcspec
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"github.com/bitechdev/ResolveSpec/pkg/logger"
+	"github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+// HookType defines the type of hook to execute
+type HookType string
+
+const (
+	// Query operation hooks (for SqlQuery - single record)
+	BeforeQuery HookType = "before_query"
+	AfterQuery  HookType = "after_query"
+
+	// Query list operation hooks (for SqlQueryList - multiple records)
+	BeforeQueryList HookType = "before_query_list"
+	AfterQueryList  HookType = "after_query_list"
+
+	// SQL execution hooks (just before SQL is executed)
+	BeforeSQLExec HookType = "before_sql_exec"
+	AfterSQLExec  HookType = "after_sql_exec"
+
+	// Response hooks (before response is sent)
+	BeforeResponse HookType = "before_response"
+)
+
+// HookContext contains all the data available to a hook
+type HookContext struct {
+	Context context.Context
+	Handler *Handler // Reference to the handler for accessing database
+	Request *http.Request
+	Writer  http.ResponseWriter
+
+	// SQL query and variables
+	SQLQuery  string                 // The SQL query being executed (can be modified by hooks)
+	Variables map[string]interface{} // Variables extracted from request
+	InputVars []string               // Input variable placeholders found in query
+	MetaInfo  map[string]interface{} // Metadata about the request
+	PropQry   map[string]string      // Property query parameters
+
+	// User context
+	UserContext *security.UserContext
+
+	// Pagination and filtering (for list queries)
+	SortColumns string
+	Limit       int
+	Offset      int
+
+	// Results
+	Result      interface{} // Query result (single record or list)
+	Total       int64       // Total count (for list queries)
+	Error       error       // Error if operation failed
+	ComplexAPI  bool        // Whether complex API response format is requested
+	NoCount     bool        // Whether count query should be skipped
+	BlankParams bool        // Whether blank parameters should be removed
+	AllowFilter bool        // Whether filtering is allowed
+
+	// Allow hooks to abort the operation
+	Abort        bool   // If set to true, the operation will be aborted
+	AbortMessage string // Message to return if aborted
+	AbortCode    int    // HTTP status code if aborted
+}
+
+// HookFunc is the signature for hook functions
+// It receives a HookContext and can modify it or return an error
+// If an error is returned, the operation will be aborted
+type HookFunc func(*HookContext) error
+
+// HookRegistry manages all registered hooks
+type HookRegistry struct {
+	hooks map[HookType][]HookFunc
+}
+
+// NewHookRegistry creates a new hook registry
+func NewHookRegistry() *HookRegistry {
+	return &HookRegistry{
+		hooks: make(map[HookType][]HookFunc),
+	}
+}
+
+// Register adds a new hook for the specified hook type
+func (r *HookRegistry) Register(hookType HookType, hook HookFunc) {
+	if r.hooks == nil {
+		r.hooks = make(map[HookType][]HookFunc)
+	}
+	r.hooks[hookType] = append(r.hooks[hookType], hook)
+	logger.Info("Registered funcspec hook for %s (total: %d)", hookType, len(r.hooks[hookType]))
+}
+
+// RegisterMultiple registers a hook for multiple hook types
+func (r *HookRegistry) RegisterMultiple(hookTypes []HookType, hook HookFunc) {
+	for _, hookType := range hookTypes {
+		r.Register(hookType, hook)
+	}
+}
+
+// Execute runs all hooks for the specified type in order
+// If any hook returns an error, execution stops and the error is returned
+func (r *HookRegistry) Execute(hookType HookType, ctx *HookContext) error {
+	hooks, exists := r.hooks[hookType]
+	if !exists || len(hooks) == 0 {
+		return nil
+	}
+
+	logger.Debug("Executing %d funcspec hook(s) for %s", len(hooks), hookType)
+
+	for i, hook := range hooks {
+		if err := hook(ctx); err != nil {
+			logger.Error("Funcspec hook %d for %s failed: %v", i+1, hookType, err)
+			return fmt.Errorf("hook execution failed: %w", err)
+		}
+
+		// Check if hook requested abort
+		if ctx.Abort {
+			logger.Warn("Funcspec hook %d for %s requested abort: %s", i+1, hookType, ctx.AbortMessage)
+			return fmt.Errorf("operation aborted by hook: %s", ctx.AbortMessage)
+		}
+	}
+
+	return nil
+}
+
+// Clear removes all hooks for the specified type
+func (r *HookRegistry) Clear(hookType HookType) {
+	delete(r.hooks, hookType)
+	logger.Info("Cleared all funcspec hooks for %s", hookType)
+}
+
+// ClearAll removes all registered hooks
+func (r *HookRegistry) ClearAll() {
+	r.hooks = make(map[HookType][]HookFunc)
+	logger.Info("Cleared all funcspec hooks")
+}
+
+// Count returns the number of hooks registered for a specific type
+func (r *HookRegistry) Count(hookType HookType) int {
+	if hooks, exists := r.hooks[hookType]; exists {
+		return len(hooks)
+	}
+	return 0
+}
+
+// HasHooks returns true if there are any hooks registered for the specified type
+func (r *HookRegistry) HasHooks(hookType HookType) bool {
+	return r.Count(hookType) > 0
+}
+
+// GetAllHookTypes returns all hook types that have registered hooks
+func (r *HookRegistry) GetAllHookTypes() []HookType {
+	types := make([]HookType, 0, len(r.hooks))
+	for hookType := range r.hooks {
+		types = append(types, hookType)
+	}
+	return types
+}

pkg/funcspec/hooks_example.go

@@ -0,0 +1,137 @@
+package funcspec
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/bitechdev/ResolveSpec/pkg/logger"
+)
+
+// Example hook functions demonstrating various use cases
+
+// ExampleLoggingHook logs all SQL queries before execution
+func ExampleLoggingHook(ctx *HookContext) error {
+	logger.Info("Executing SQL query for user %s: %s", ctx.UserContext.UserName, ctx.SQLQuery)
+	return nil
+}
+
+// ExampleSecurityHook validates user permissions before executing queries
+func ExampleSecurityHook(ctx *HookContext) error {
+	// Example: Block queries that try to access sensitive tables
+	if strings.Contains(strings.ToLower(ctx.SQLQuery), "sensitive_table") {
+		if ctx.UserContext.UserID != 1 { // Only admin can access
+			ctx.Abort = true
+			ctx.AbortCode = 403
+			ctx.AbortMessage = "Access denied: insufficient permissions"
+			return fmt.Errorf("access denied to sensitive_table")
+		}
+	}
+	return nil
+}
+
+// ExampleQueryModificationHook modifies SQL queries to add user-specific filtering
+func ExampleQueryModificationHook(ctx *HookContext) error {
+	// Example: Automatically add user_id filter for non-admin users
+	if ctx.UserContext.UserID != 1 { // Not admin
+		// Add WHERE clause to filter by user_id
+		if !strings.Contains(strings.ToLower(ctx.SQLQuery), "where") {
+			ctx.SQLQuery = fmt.Sprintf("%s WHERE user_id = %d", ctx.SQLQuery, ctx.UserContext.UserID)
+		} else {
+			ctx.SQLQuery = strings.Replace(
+				ctx.SQLQuery,
+				"WHERE",
+				fmt.Sprintf("WHERE user_id = %d AND", ctx.UserContext.UserID),
+				1,
+			)
+		}
+		logger.Debug("Modified query for user %d: %s", ctx.UserContext.UserID, ctx.SQLQuery)
+	}
+	return nil
+}
+
+// ExampleResultFilterHook filters results after query execution
+func ExampleResultFilterHook(ctx *HookContext) error {
+	// Example: Remove sensitive fields from results for non-admin users
+	if ctx.UserContext.UserID != 1 { // Not admin
+		switch result := ctx.Result.(type) {
+		case []map[string]interface{}:
+			// Filter list results
+			for i := range result {
+				delete(result[i], "password")
+				delete(result[i], "ssn")
+				delete(result[i], "credit_card")
+			}
+		case map[string]interface{}:
+			// Filter single record
+			delete(result, "password")
+			delete(result, "ssn")
+			delete(result, "credit_card")
+		}
+	}
+	return nil
+}
+
+// ExampleAuditHook logs all queries and results for audit purposes
+func ExampleAuditHook(ctx *HookContext) error {
+	// Log to audit table or external system
+	logger.Info("AUDIT: User %s (%d) executed query from %s",
+		ctx.UserContext.UserName,
+		ctx.UserContext.UserID,
+		ctx.Request.RemoteAddr,
+	)
+
+	// In a real implementation, you might:
+	// - Insert into an audit log table
+	// - Send to a logging service
+	// - Write to a file
+
+	return nil
+}
+
+// ExampleCacheHook implements simple response caching
+func ExampleCacheHook(ctx *HookContext) error {
+	// This is a simplified example - real caching would use a proper cache store
+	// Check if we have a cached result for this query
+	// cacheKey := fmt.Sprintf("%s:%s", ctx.UserContext.UserName, ctx.SQLQuery)
+	// if cachedResult := checkCache(cacheKey); cachedResult != nil {
+	//     ctx.Result = cachedResult
+	//     ctx.Abort = true // Skip query execution
+	//     ctx.AbortMessage = "Serving from cache"
+	// }
+	return nil
+}
+
+// ExampleErrorHandlingHook provides custom error handling
+func ExampleErrorHandlingHook(ctx *HookContext) error {
+	if ctx.Error != nil {
+		// Log error with context
+		logger.Error("Query failed for user %s: %v\nQuery: %s",
+			ctx.UserContext.UserName,
+			ctx.Error,
+			ctx.SQLQuery,
+		)
+
+		// You could send notifications, update metrics, etc.
+	}
+	return nil
+}
+
+// Example of registering hooks:
+//
+// func SetupHooks(handler *Handler) {
+//     hooks := handler.Hooks()
+//
+//     // Register security hook before query execution
+//     hooks.Register(BeforeQuery, ExampleSecurityHook)
+//     hooks.Register(BeforeQueryList, ExampleSecurityHook)
+//
+//     // Register logging hook before SQL execution
+//     hooks.Register(BeforeSQLExec, ExampleLoggingHook)
+//
+//     // Register result filtering after query
+//     hooks.Register(AfterQuery, ExampleResultFilterHook)
+//     hooks.Register(AfterQueryList, ExampleResultFilterHook)
+//
+//     // Register audit hook after execution
+//     hooks.RegisterMultiple([]HookType{AfterQuery, AfterQueryList}, ExampleAuditHook)
+// }

pkg/funcspec/hooks_test.go

@@ -0,0 +1,589 @@
+package funcspec
+
+import (
+	"context"
+	"fmt"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+	"github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+// TestNewHookRegistry tests hook registry creation
+func TestNewHookRegistry(t *testing.T) {
+	registry := NewHookRegistry()
+
+	if registry == nil {
+		t.Fatal("Expected registry to be created, got nil")
+	}
+
+	if registry.hooks == nil {
+		t.Error("Expected hooks map to be initialized")
+	}
+}
+
+// TestRegisterHook tests registering a single hook
+func TestRegisterHook(t *testing.T) {
+	registry := NewHookRegistry()
+
+	hookCalled := false
+	testHook := func(ctx *HookContext) error {
+		hookCalled = true
+		return nil
+	}
+
+	registry.Register(BeforeQuery, testHook)
+
+	if !registry.HasHooks(BeforeQuery) {
+		t.Error("Expected hook to be registered")
+	}
+
+	if registry.Count(BeforeQuery) != 1 {
+		t.Errorf("Expected 1 hook, got %d", registry.Count(BeforeQuery))
+	}
+
+	// Execute the hook
+	ctx := &HookContext{}
+	err := registry.Execute(BeforeQuery, ctx)
+	if err != nil {
+		t.Errorf("Hook execution failed: %v", err)
+	}
+
+	if !hookCalled {
+		t.Error("Expected hook to be called")
+	}
+}
+
+// TestRegisterMultipleHooks tests registering multiple hooks for same type
+func TestRegisterMultipleHooks(t *testing.T) {
+	registry := NewHookRegistry()
+
+	callOrder := []int{}
+
+	hook1 := func(ctx *HookContext) error {
+		callOrder = append(callOrder, 1)
+		return nil
+	}
+
+	hook2 := func(ctx *HookContext) error {
+		callOrder = append(callOrder, 2)
+		return nil
+	}
+
+	hook3 := func(ctx *HookContext) error {
+		callOrder = append(callOrder, 3)
+		return nil
+	}
+
+	registry.Register(BeforeQuery, hook1)
+	registry.Register(BeforeQuery, hook2)
+	registry.Register(BeforeQuery, hook3)
+
+	if registry.Count(BeforeQuery) != 3 {
+		t.Errorf("Expected 3 hooks, got %d", registry.Count(BeforeQuery))
+	}
+
+	// Execute hooks
+	ctx := &HookContext{}
+	err := registry.Execute(BeforeQuery, ctx)
+	if err != nil {
+		t.Errorf("Hook execution failed: %v", err)
+	}
+
+	// Verify hooks were called in order
+	if len(callOrder) != 3 {
+		t.Errorf("Expected 3 hooks to be called, got %d", len(callOrder))
+	}
+
+	for i, expected := range []int{1, 2, 3} {
+		if callOrder[i] != expected {
+			t.Errorf("Expected hook %d at position %d, got %d", expected, i, callOrder[i])
+		}
+	}
+}
+
+// TestRegisterMultipleHookTypes tests registering a hook for multiple types
+func TestRegisterMultipleHookTypes(t *testing.T) {
+	registry := NewHookRegistry()
+
+	callCount := 0
+	testHook := func(ctx *HookContext) error {
+		callCount++
+		return nil
+	}
+
+	hookTypes := []HookType{BeforeQuery, AfterQuery, BeforeSQLExec}
+	registry.RegisterMultiple(hookTypes, testHook)
+
+	// Verify hook is registered for all types
+	for _, hookType := range hookTypes {
+		if !registry.HasHooks(hookType) {
+			t.Errorf("Expected hook to be registered for %s", hookType)
+		}
+
+		if registry.Count(hookType) != 1 {
+			t.Errorf("Expected 1 hook for %s, got %d", hookType, registry.Count(hookType))
+		}
+	}
+
+	// Execute each hook type
+	ctx := &HookContext{}
+	for _, hookType := range hookTypes {
+		if err := registry.Execute(hookType, ctx); err != nil {
+			t.Errorf("Hook execution failed for %s: %v", hookType, err)
+		}
+	}
+
+	if callCount != 3 {
+		t.Errorf("Expected hook to be called 3 times, got %d", callCount)
+	}
+}
+
+// TestHookError tests hook error handling
+func TestHookError(t *testing.T) {
+	registry := NewHookRegistry()
+
+	expectedError := fmt.Errorf("test error")
+	errorHook := func(ctx *HookContext) error {
+		return expectedError
+	}
+
+	registry.Register(BeforeQuery, errorHook)
+
+	ctx := &HookContext{}
+	err := registry.Execute(BeforeQuery, ctx)
+
+	if err == nil {
+		t.Error("Expected error from hook, got nil")
+	}
+
+	if err.Error() != fmt.Sprintf("hook execution failed: %v", expectedError) {
+		t.Errorf("Expected error message to contain hook error, got: %v", err)
+	}
+}
+
+// TestHookAbort tests hook abort functionality
+func TestHookAbort(t *testing.T) {
+	registry := NewHookRegistry()
+
+	abortHook := func(ctx *HookContext) error {
+		ctx.Abort = true
+		ctx.AbortMessage = "Operation aborted by hook"
+		ctx.AbortCode = 403
+		return nil
+	}
+
+	registry.Register(BeforeQuery, abortHook)
+
+	ctx := &HookContext{}
+	err := registry.Execute(BeforeQuery, ctx)
+
+	if err == nil {
+		t.Error("Expected error when hook aborts, got nil")
+	}
+
+	if !ctx.Abort {
+		t.Error("Expected Abort to be true")
+	}
+
+	if ctx.AbortMessage != "Operation aborted by hook" {
+		t.Errorf("Expected abort message, got: %s", ctx.AbortMessage)
+	}
+
+	if ctx.AbortCode != 403 {
+		t.Errorf("Expected abort code 403, got: %d", ctx.AbortCode)
+	}
+}
+
+// TestHookChainWithError tests that hook chain stops on first error
+func TestHookChainWithError(t *testing.T) {
+	registry := NewHookRegistry()
+
+	callOrder := []int{}
+
+	hook1 := func(ctx *HookContext) error {
+		callOrder = append(callOrder, 1)
+		return nil
+	}
+
+	hook2 := func(ctx *HookContext) error {
+		callOrder = append(callOrder, 2)
+		return fmt.Errorf("error in hook 2")
+	}
+
+	hook3 := func(ctx *HookContext) error {
+		callOrder = append(callOrder, 3)
+		return nil
+	}
+
+	registry.Register(BeforeQuery, hook1)
+	registry.Register(BeforeQuery, hook2)
+	registry.Register(BeforeQuery, hook3)
+
+	ctx := &HookContext{}
+	err := registry.Execute(BeforeQuery, ctx)
+
+	if err == nil {
+		t.Error("Expected error from hook chain")
+	}
+
+	// Only first two hooks should have been called
+	if len(callOrder) != 2 {
+		t.Errorf("Expected 2 hooks to be called, got %d", len(callOrder))
+	}
+
+	if callOrder[0] != 1 || callOrder[1] != 2 {
+		t.Errorf("Expected hooks 1 and 2 to be called, got: %v", callOrder)
+	}
+}
+
+// TestClearHooks tests clearing hooks
+func TestClearHooks(t *testing.T) {
+	registry := NewHookRegistry()
+
+	testHook := func(ctx *HookContext) error {
+		return nil
+	}
+
+	registry.Register(BeforeQuery, testHook)
+	registry.Register(AfterQuery, testHook)
+
+	if !registry.HasHooks(BeforeQuery) {
+		t.Error("Expected BeforeQuery hook to be registered")
+	}
+
+	registry.Clear(BeforeQuery)
+
+	if registry.HasHooks(BeforeQuery) {
+		t.Error("Expected BeforeQuery hooks to be cleared")
+	}
+
+	if !registry.HasHooks(AfterQuery) {
+		t.Error("Expected AfterQuery hook to still be registered")
+	}
+}
+
+// TestClearAllHooks tests clearing all hooks
+func TestClearAllHooks(t *testing.T) {
+	registry := NewHookRegistry()
+
+	testHook := func(ctx *HookContext) error {
+		return nil
+	}
+
+	registry.Register(BeforeQuery, testHook)
+	registry.Register(AfterQuery, testHook)
+	registry.Register(BeforeSQLExec, testHook)
+
+	registry.ClearAll()
+
+	if registry.HasHooks(BeforeQuery) || registry.HasHooks(AfterQuery) || registry.HasHooks(BeforeSQLExec) {
+		t.Error("Expected all hooks to be cleared")
+	}
+}
+
+// TestGetAllHookTypes tests getting all registered hook types
+func TestGetAllHookTypes(t *testing.T) {
+	registry := NewHookRegistry()
+
+	testHook := func(ctx *HookContext) error {
+		return nil
+	}
+
+	registry.Register(BeforeQuery, testHook)
+	registry.Register(AfterQuery, testHook)
+
+	types := registry.GetAllHookTypes()
+
+	if len(types) != 2 {
+		t.Errorf("Expected 2 hook types, got %d", len(types))
+	}
+
+	// Verify the types are present
+	foundBefore := false
+	foundAfter := false
+	for _, hookType := range types {
+		if hookType == BeforeQuery {
+			foundBefore = true
+		}
+		if hookType == AfterQuery {
+			foundAfter = true
+		}
+	}
+
+	if !foundBefore || !foundAfter {
+		t.Error("Expected both BeforeQuery and AfterQuery hook types")
+	}
+}
+
+// TestHookContextModification tests that hooks can modify the context
+func TestHookContextModification(t *testing.T) {
+	registry := NewHookRegistry()
+
+	// Hook that modifies SQL query
+	modifyHook := func(ctx *HookContext) error {
+		ctx.SQLQuery = "SELECT * FROM modified_table"
+		ctx.Variables["new_var"] = "new_value"
+		return nil
+	}
+
+	registry.Register(BeforeQuery, modifyHook)
+
+	ctx := &HookContext{
+		SQLQuery:  "SELECT * FROM original_table",
+		Variables: make(map[string]interface{}),
+	}
+
+	err := registry.Execute(BeforeQuery, ctx)
+	if err != nil {
+		t.Errorf("Hook execution failed: %v", err)
+	}
+
+	if ctx.SQLQuery != "SELECT * FROM modified_table" {
+		t.Errorf("Expected SQL query to be modified, got: %s", ctx.SQLQuery)
+	}
+
+	if ctx.Variables["new_var"] != "new_value" {
+		t.Errorf("Expected variable to be added, got: %v", ctx.Variables)
+	}
+}
+
+// TestExampleHooks tests the example hooks
+func TestExampleLoggingHook(t *testing.T) {
+	ctx := &HookContext{
+		Context:  context.Background(),
+		SQLQuery: "SELECT * FROM test",
+		UserContext: &security.UserContext{
+			UserName: "testuser",
+		},
+	}
+
+	err := ExampleLoggingHook(ctx)
+	if err != nil {
+		t.Errorf("ExampleLoggingHook failed: %v", err)
+	}
+}
+
+func TestExampleSecurityHook(t *testing.T) {
+	tests := []struct {
+		name        string
+		sqlQuery    string
+		userID      int
+		shouldAbort bool
+	}{
+		{
+			name:        "Admin accessing sensitive table",
+			sqlQuery:    "SELECT * FROM sensitive_table",
+			userID:      1,
+			shouldAbort: false,
+		},
+		{
+			name:        "Non-admin accessing sensitive table",
+			sqlQuery:    "SELECT * FROM sensitive_table",
+			userID:      2,
+			shouldAbort: true,
+		},
+		{
+			name:        "Non-admin accessing normal table",
+			sqlQuery:    "SELECT * FROM users",
+			userID:      2,
+			shouldAbort: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			ctx := &HookContext{
+				Context:  context.Background(),
+				SQLQuery: tt.sqlQuery,
+				UserContext: &security.UserContext{
+					UserID: tt.userID,
+				},
+			}
+
+			_ = ExampleSecurityHook(ctx)
+
+			if tt.shouldAbort {
+				if !ctx.Abort {
+					t.Error("Expected security hook to abort operation")
+				}
+				if ctx.AbortCode != 403 {
+					t.Errorf("Expected abort code 403, got %d", ctx.AbortCode)
+				}
+			} else {
+				if ctx.Abort {
+					t.Error("Expected security hook not to abort operation")
+				}
+			}
+		})
+	}
+}
+
+func TestExampleResultFilterHook(t *testing.T) {
+	tests := []struct {
+		name     string
+		userID   int
+		result   interface{}
+		validate func(t *testing.T, result interface{})
+	}{
+		{
+			name:   "Admin user - no filtering",
+			userID: 1,
+			result: map[string]interface{}{
+				"id":       1,
+				"name":     "Test",
+				"password": "secret",
+			},
+			validate: func(t *testing.T, result interface{}) {
+				m := result.(map[string]interface{})
+				if _, exists := m["password"]; !exists {
+					t.Error("Expected password field to remain for admin")
+				}
+			},
+		},
+		{
+			name:   "Regular user - sensitive fields removed",
+			userID: 2,
+			result: map[string]interface{}{
+				"id":       1,
+				"name":     "Test",
+				"password": "secret",
+				"ssn":      "123-45-6789",
+			},
+			validate: func(t *testing.T, result interface{}) {
+				m := result.(map[string]interface{})
+				if _, exists := m["password"]; exists {
+					t.Error("Expected password field to be removed")
+				}
+				if _, exists := m["ssn"]; exists {
+					t.Error("Expected ssn field to be removed")
+				}
+				if _, exists := m["name"]; !exists {
+					t.Error("Expected name field to remain")
+				}
+			},
+		},
+		{
+			name:   "Regular user - list results filtered",
+			userID: 2,
+			result: []map[string]interface{}{
+				{"id": 1, "name": "User 1", "password": "secret1"},
+				{"id": 2, "name": "User 2", "password": "secret2"},
+			},
+			validate: func(t *testing.T, result interface{}) {
+				list := result.([]map[string]interface{})
+				for _, m := range list {
+					if _, exists := m["password"]; exists {
+						t.Error("Expected password field to be removed from list")
+					}
+				}
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			ctx := &HookContext{
+				Context: context.Background(),
+				Result:  tt.result,
+				UserContext: &security.UserContext{
+					UserID: tt.userID,
+				},
+			}
+
+			err := ExampleResultFilterHook(ctx)
+			if err != nil {
+				t.Errorf("Hook failed: %v", err)
+			}
+
+			if tt.validate != nil {
+				tt.validate(t, ctx.Result)
+			}
+		})
+	}
+}
+
+func TestExampleAuditHook(t *testing.T) {
+	req := httptest.NewRequest("GET", "/api/test", nil)
+	req.RemoteAddr = "192.168.1.1:12345"
+
+	ctx := &HookContext{
+		Context: context.Background(),
+		Request: req,
+		UserContext: &security.UserContext{
+			UserID:   123,
+			UserName: "testuser",
+		},
+	}
+
+	err := ExampleAuditHook(ctx)
+	if err != nil {
+		t.Errorf("ExampleAuditHook failed: %v", err)
+	}
+}
+
+func TestExampleErrorHandlingHook(t *testing.T) {
+	ctx := &HookContext{
+		Context:  context.Background(),
+		SQLQuery: "SELECT * FROM test",
+		Error:    fmt.Errorf("test error"),
+		UserContext: &security.UserContext{
+			UserName: "testuser",
+		},
+	}
+
+	err := ExampleErrorHandlingHook(ctx)
+	if err != nil {
+		t.Errorf("ExampleErrorHandlingHook failed: %v", err)
+	}
+}
+
+// TestHookIntegrationWithHandler tests hooks integrated with the handler
+func TestHookIntegrationWithHandler(t *testing.T) {
+	db := &MockDatabase{
+		RunInTransactionFunc: func(ctx context.Context, fn func(common.Database) error) error {
+			queryDB := &MockDatabase{
+				QueryFunc: func(ctx context.Context, dest interface{}, query string, args ...interface{}) error {
+					rows := dest.(*[]map[string]interface{})
+					*rows = []map[string]interface{}{
+						{"id": float64(1), "name": "Test User"},
+					}
+					return nil
+				},
+			}
+			return fn(queryDB)
+		},
+	}
+
+	handler := NewHandler(db)
+
+	// Register a hook that modifies the SQL query
+	hookCalled := false
+	handler.Hooks().Register(BeforeSQLExec, func(ctx *HookContext) error {
+		hookCalled = true
+		// Verify we can access context data
+		if ctx.SQLQuery == "" {
+			t.Error("Expected SQL query to be set")
+		}
+		if ctx.UserContext == nil {
+			t.Error("Expected user context to be set")
+		}
+		return nil
+	})
+
+	// Execute a query
+	req := createTestRequest("GET", "/test", nil, nil, nil)
+	w := httptest.NewRecorder()
+
+	handlerFunc := handler.SqlQuery("SELECT * FROM users WHERE id = 1", false)
+	handlerFunc(w, req)
+
+	if !hookCalled {
+		t.Error("Expected hook to be called during query execution")
+	}
+
+	if w.Code != 200 {
+		t.Errorf("Expected status 200, got %d", w.Code)
+	}
+}

pkg/funcspec/parameters.go

@@ -0,0 +1,411 @@
+package funcspec
+
+import (
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/bitechdev/ResolveSpec/pkg/logger"
+	"github.com/bitechdev/ResolveSpec/pkg/restheadspec"
+)
+
+// RequestParameters holds parsed parameters from headers and query string
+type RequestParameters struct {
+	// Field selection
+	SelectFields    []string
+	NotSelectFields []string
+	Distinct        bool
+
+	// Filtering
+	FieldFilters   map[string]string         // column -> value (exact match)
+	SearchFilters  map[string]string         // column -> value (ILIKE)
+	SearchOps      map[string]FilterOperator // column -> {operator, value, logic}
+	CustomSQLWhere string
+	CustomSQLOr    string
+
+	// Sorting & Pagination
+	SortColumns string
+	Limit       int
+	Offset      int
+
+	// Advanced features
+	SkipCount bool
+	SkipCache bool
+
+	// Response format
+	ResponseFormat string // "simple", "detail", "syncfusion"
+	ComplexAPI     bool   // true if NOT simple API
+}
+
+// FilterOperator represents a filter with operator
+type FilterOperator struct {
+	Operator string // eq, neq, gt, lt, gte, lte, like, ilike, in, between, etc.
+	Value    string
+	Logic    string // AND or OR
+}
+
+// ParseParameters parses all parameters from request headers and query string
+func (h *Handler) ParseParameters(r *http.Request) *RequestParameters {
+	params := &RequestParameters{
+		FieldFilters:   make(map[string]string),
+		SearchFilters:  make(map[string]string),
+		SearchOps:      make(map[string]FilterOperator),
+		Limit:          20,       // Default limit
+		Offset:         0,        // Default offset
+		ResponseFormat: "simple", // Default format
+		ComplexAPI:     false,    // Default to simple API
+	}
+
+	// Merge headers and query parameters
+	combined := make(map[string]string)
+
+	// Add all headers (normalize to lowercase)
+	for key, values := range r.Header {
+		if len(values) > 0 {
+			combined[strings.ToLower(key)] = values[0]
+		}
+	}
+
+	// Add all query parameters (override headers)
+	for key, values := range r.URL.Query() {
+		if len(values) > 0 {
+			combined[strings.ToLower(key)] = values[0]
+		}
+	}
+
+	// Parse each parameter
+	for key, value := range combined {
+		// Decode value if base64 encoded
+		decodedValue := h.decodeValue(value)
+
+		switch {
+		// Field Selection
+		case strings.HasPrefix(key, "x-select-fields"):
+			params.SelectFields = h.parseCommaSeparated(decodedValue)
+		case strings.HasPrefix(key, "x-not-select-fields"):
+			params.NotSelectFields = h.parseCommaSeparated(decodedValue)
+		case strings.HasPrefix(key, "x-distinct"):
+			params.Distinct = strings.EqualFold(decodedValue, "true")
+
+		// Filtering
+		case strings.HasPrefix(key, "x-fieldfilter-"):
+			colName := strings.TrimPrefix(key, "x-fieldfilter-")
+			params.FieldFilters[colName] = decodedValue
+		case strings.HasPrefix(key, "x-searchfilter-"):
+			colName := strings.TrimPrefix(key, "x-searchfilter-")
+			params.SearchFilters[colName] = decodedValue
+		case strings.HasPrefix(key, "x-searchop-"):
+			h.parseSearchOp(params, key, decodedValue, "AND")
+		case strings.HasPrefix(key, "x-searchor-"):
+			h.parseSearchOp(params, key, decodedValue, "OR")
+		case strings.HasPrefix(key, "x-searchand-"):
+			h.parseSearchOp(params, key, decodedValue, "AND")
+		case strings.HasPrefix(key, "x-custom-sql-w"):
+			if params.CustomSQLWhere != "" {
+				params.CustomSQLWhere = fmt.Sprintf("%s AND (%s)", params.CustomSQLWhere, decodedValue)
+			} else {
+				params.CustomSQLWhere = decodedValue
+			}
+		case strings.HasPrefix(key, "x-custom-sql-or"):
+			if params.CustomSQLOr != "" {
+				params.CustomSQLOr = fmt.Sprintf("%s OR (%s)", params.CustomSQLOr, decodedValue)
+			} else {
+				params.CustomSQLOr = decodedValue
+			}
+
+		// Sorting & Pagination
+		case key == "sort" || strings.HasPrefix(key, "x-sort"):
+			params.SortColumns = decodedValue
+		case strings.HasPrefix(key, "sort(") && strings.Contains(key, ")"):
+			// Handle sort(col1,-col2) syntax
+			sortValue := key[strings.Index(key, "(")+1 : strings.Index(key, ")")]
+			params.SortColumns = sortValue
+		case key == "limit" || strings.HasPrefix(key, "x-limit"):
+			if limit, err := strconv.Atoi(decodedValue); err == nil && limit > 0 {
+				params.Limit = limit
+			}
+		case strings.HasPrefix(key, "limit(") && strings.Contains(key, ")"):
+			// Handle limit(offset,limit) or limit(limit) syntax
+			limitValue := key[strings.Index(key, "(")+1 : strings.Index(key, ")")]
+			parts := strings.Split(limitValue, ",")
+			if len(parts) > 1 {
+				if offset, err := strconv.Atoi(parts[0]); err == nil {
+					params.Offset = offset
+				}
+				if limit, err := strconv.Atoi(parts[1]); err == nil {
+					params.Limit = limit
+				}
+			} else {
+				if limit, err := strconv.Atoi(parts[0]); err == nil {
+					params.Limit = limit
+				}
+			}
+		case key == "offset" || strings.HasPrefix(key, "x-offset"):
+			if offset, err := strconv.Atoi(decodedValue); err == nil && offset >= 0 {
+				params.Offset = offset
+			}
+
+		// Advanced features
+		case strings.HasPrefix(key, "x-skipcount"):
+			params.SkipCount = strings.EqualFold(decodedValue, "true")
+		case strings.HasPrefix(key, "x-skipcache"):
+			params.SkipCache = strings.EqualFold(decodedValue, "true")
+
+		// Response Format
+		case strings.HasPrefix(key, "x-simpleapi"):
+			params.ResponseFormat = "simple"
+			params.ComplexAPI = decodedValue != "1" && !strings.EqualFold(decodedValue, "true")
+		case strings.HasPrefix(key, "x-detailapi"):
+			params.ResponseFormat = "detail"
+			params.ComplexAPI = true
+		case strings.HasPrefix(key, "x-syncfusion"):
+			params.ResponseFormat = "syncfusion"
+			params.ComplexAPI = true
+		}
+	}
+
+	return params
+}
+
+// parseSearchOp parses x-searchop-{operator}-{column} or x-searchor-{operator}-{column}
+func (h *Handler) parseSearchOp(params *RequestParameters, headerKey, value, logic string) {
+	var prefix string
+	if logic == "OR" {
+		prefix = "x-searchor-"
+	} else {
+		prefix = "x-searchop-"
+		if strings.HasPrefix(headerKey, "x-searchand-") {
+			prefix = "x-searchand-"
+		}
+	}
+
+	rest := strings.TrimPrefix(headerKey, prefix)
+	parts := strings.SplitN(rest, "-", 2)
+	if len(parts) != 2 {
+		logger.Warn("Invalid search operator header format: %s", headerKey)
+		return
+	}
+
+	operator := parts[0]
+	colName := parts[1]
+
+	params.SearchOps[colName] = FilterOperator{
+		Operator: operator,
+		Value:    value,
+		Logic:    logic,
+	}
+
+	logger.Debug("%s search operator: %s %s %s", logic, colName, operator, value)
+}
+
+// decodeValue decodes base64 encoded values (ZIP_ or __ prefix)
+func (h *Handler) decodeValue(value string) string {
+	decoded, _ := restheadspec.DecodeParam(value)
+	return decoded
+}
+
+// parseCommaSeparated parses comma-separated values
+func (h *Handler) parseCommaSeparated(value string) []string {
+	if value == "" {
+		return nil
+	}
+
+	parts := strings.Split(value, ",")
+	result := make([]string, 0, len(parts))
+	for _, part := range parts {
+		part = strings.TrimSpace(part)
+		if part != "" {
+			result = append(result, part)
+		}
+	}
+	return result
+}
+
+// ApplyFieldSelection applies column selection to SQL query
+func (h *Handler) ApplyFieldSelection(sqlQuery string, params *RequestParameters) string {
+	if len(params.SelectFields) == 0 && len(params.NotSelectFields) == 0 {
+		return sqlQuery
+	}
+
+	// This is a simplified implementation
+	// A full implementation would parse the SQL and replace the SELECT clause
+	// For now, we log a warning that this feature needs manual implementation
+	if len(params.SelectFields) > 0 {
+		logger.Debug("Field selection requested: %v (manual SQL adjustment may be needed)", params.SelectFields)
+	}
+	if len(params.NotSelectFields) > 0 {
+		logger.Debug("Field exclusion requested: %v (manual SQL adjustment may be needed)", params.NotSelectFields)
+	}
+
+	return sqlQuery
+}
+
+// ApplyFilters applies all filters to the SQL query
+func (h *Handler) ApplyFilters(sqlQuery string, params *RequestParameters) string {
+	// Apply field filters (exact match)
+	for colName, value := range params.FieldFilters {
+		condition := ""
+		if value == "" || value == "0" {
+			condition = fmt.Sprintf("COALESCE(%s, 0) = %s", ValidSQL(colName, "colname"), ValidSQL(value, "colvalue"))
+		} else {
+			condition = fmt.Sprintf("%s = %s", ValidSQL(colName, "colname"), ValidSQL(value, "colvalue"))
+		}
+		sqlQuery = sqlQryWhere(sqlQuery, condition)
+		logger.Debug("Applied field filter: %s", condition)
+	}
+
+	// Apply search filters (ILIKE)
+	for colName, value := range params.SearchFilters {
+		sval := strings.ReplaceAll(value, "'", "")
+		if sval != "" {
+			condition := fmt.Sprintf("%s ILIKE '%%%s%%'", ValidSQL(colName, "colname"), ValidSQL(sval, "colvalue"))
+			sqlQuery = sqlQryWhere(sqlQuery, condition)
+			logger.Debug("Applied search filter: %s", condition)
+		}
+	}
+
+	// Apply search operators
+	for colName, filterOp := range params.SearchOps {
+		condition := h.buildFilterCondition(colName, filterOp)
+		if condition != "" {
+			if filterOp.Logic == "OR" {
+				sqlQuery = sqlQryWhereOr(sqlQuery, condition)
+			} else {
+				sqlQuery = sqlQryWhere(sqlQuery, condition)
+			}
+			logger.Debug("Applied search operator: %s", condition)
+		}
+	}
+
+	// Apply custom SQL WHERE
+	if params.CustomSQLWhere != "" {
+		colval := ValidSQL(params.CustomSQLWhere, "select")
+		if colval != "" {
+			sqlQuery = sqlQryWhere(sqlQuery, colval)
+			logger.Debug("Applied custom SQL WHERE: %s", colval)
+		}
+	}
+
+	// Apply custom SQL OR
+	if params.CustomSQLOr != "" {
+		colval := ValidSQL(params.CustomSQLOr, "select")
+		if colval != "" {
+			sqlQuery = sqlQryWhereOr(sqlQuery, colval)
+			logger.Debug("Applied custom SQL OR: %s", colval)
+		}
+	}
+
+	return sqlQuery
+}
+
+// buildFilterCondition builds a SQL condition from a FilterOperator
+func (h *Handler) buildFilterCondition(colName string, op FilterOperator) string {
+	safCol := ValidSQL(colName, "colname")
+	operator := strings.ToLower(op.Operator)
+	value := op.Value
+
+	switch operator {
+	case "contains", "contain", "like":
+		return fmt.Sprintf("%s ILIKE '%%%s%%'", safCol, ValidSQL(value, "colvalue"))
+	case "beginswith", "startswith":
+		return fmt.Sprintf("%s ILIKE '%s%%'", safCol, ValidSQL(value, "colvalue"))
+	case "endswith":
+		return fmt.Sprintf("%s ILIKE '%%%s'", safCol, ValidSQL(value, "colvalue"))
+	case "equals", "eq", "=":
+		if IsNumeric(value) {
+			return fmt.Sprintf("%s = %s", safCol, ValidSQL(value, "colvalue"))
+		}
+		return fmt.Sprintf("%s = '%s'", safCol, ValidSQL(value, "colvalue"))
+	case "notequals", "neq", "ne", "!=", "<>":
+		if IsNumeric(value) {
+			return fmt.Sprintf("%s != %s", safCol, ValidSQL(value, "colvalue"))
+		}
+		return fmt.Sprintf("%s != '%s'", safCol, ValidSQL(value, "colvalue"))
+	case "greaterthan", "gt", ">":
+		return fmt.Sprintf("%s > %s", safCol, ValidSQL(value, "colvalue"))
+	case "lessthan", "lt", "<":
+		return fmt.Sprintf("%s < %s", safCol, ValidSQL(value, "colvalue"))
+	case "greaterthanorequal", "gte", "ge", ">=":
+		return fmt.Sprintf("%s >= %s", safCol, ValidSQL(value, "colvalue"))
+	case "lessthanorequal", "lte", "le", "<=":
+		return fmt.Sprintf("%s <= %s", safCol, ValidSQL(value, "colvalue"))
+	case "between":
+		parts := strings.Split(value, ",")
+		if len(parts) == 2 {
+			return fmt.Sprintf("%s > %s AND %s < %s", safCol, ValidSQL(parts[0], "colvalue"), safCol, ValidSQL(parts[1], "colvalue"))
+		}
+	case "betweeninclusive":
+		parts := strings.Split(value, ",")
+		if len(parts) == 2 {
+			return fmt.Sprintf("%s >= %s AND %s <= %s", safCol, ValidSQL(parts[0], "colvalue"), safCol, ValidSQL(parts[1], "colvalue"))
+		}
+	case "in":
+		values := strings.Split(value, ",")
+		safeValues := make([]string, len(values))
+		for i, v := range values {
+			safeValues[i] = fmt.Sprintf("'%s'", ValidSQL(v, "colvalue"))
+		}
+		return fmt.Sprintf("%s IN (%s)", safCol, strings.Join(safeValues, ", "))
+	case "empty", "isnull", "null":
+		return fmt.Sprintf("(%s IS NULL OR %s = '')", safCol, safCol)
+	case "notempty", "isnotnull", "notnull":
+		return fmt.Sprintf("(%s IS NOT NULL AND %s != '')", safCol, safCol)
+	default:
+		logger.Warn("Unknown filter operator: %s, defaulting to equals", operator)
+		return fmt.Sprintf("%s = '%s'", safCol, ValidSQL(value, "colvalue"))
+	}
+
+	return ""
+}
+
+// ApplyDistinct adds DISTINCT to SQL query if requested
+func (h *Handler) ApplyDistinct(sqlQuery string, params *RequestParameters) string {
+	if !params.Distinct {
+		return sqlQuery
+	}
+
+	// Add DISTINCT after SELECT
+	selectPos := strings.Index(strings.ToUpper(sqlQuery), "SELECT")
+	if selectPos >= 0 {
+		beforeSelect := sqlQuery[:selectPos+6] // "SELECT"
+		afterSelect := sqlQuery[selectPos+6:]
+		sqlQuery = beforeSelect + " DISTINCT" + afterSelect
+		logger.Debug("Applied DISTINCT to query")
+	}
+
+	return sqlQuery
+}
+
+// sqlQryWhereOr adds a WHERE clause with OR logic
+func sqlQryWhereOr(sqlquery, condition string) string {
+	lowerQuery := strings.ToLower(sqlquery)
+	wherePos := strings.Index(lowerQuery, " where ")
+	groupPos := strings.Index(lowerQuery, " group by")
+	orderPos := strings.Index(lowerQuery, " order by")
+	limitPos := strings.Index(lowerQuery, " limit ")
+
+	// Find the insertion point
+	insertPos := len(sqlquery)
+	if groupPos > 0 && groupPos < insertPos {
+		insertPos = groupPos
+	}
+	if orderPos > 0 && orderPos < insertPos {
+		insertPos = orderPos
+	}
+	if limitPos > 0 && limitPos < insertPos {
+		insertPos = limitPos
+	}
+
+	if wherePos > 0 {
+		// WHERE exists, add OR condition
+		before := sqlquery[:insertPos]
+		after := sqlquery[insertPos:]
+		return fmt.Sprintf("%s OR (%s) %s", before, condition, after)
+	} else {
+		// No WHERE exists, add it
+		before := sqlquery[:insertPos]
+		after := sqlquery[insertPos:]
+		return fmt.Sprintf("%s WHERE %s %s", before, condition, after)
+	}
+}

pkg/funcspec/parameters_test.go

@@ -0,0 +1,549 @@
+package funcspec
+
+import (
+	"strings"
+	"testing"
+)
+
+// TestParseParameters tests the comprehensive parameter parsing
+func TestParseParameters(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name        string
+		queryParams map[string]string
+		headers     map[string]string
+		validate    func(t *testing.T, params *RequestParameters)
+	}{
+		{
+			name: "Parse field selection",
+			headers: map[string]string{
+				"X-Select-Fields":     "id,name,email",
+				"X-Not-Select-Fields": "password,ssn",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if len(params.SelectFields) != 3 {
+					t.Errorf("Expected 3 select fields, got %d", len(params.SelectFields))
+				}
+				if len(params.NotSelectFields) != 2 {
+					t.Errorf("Expected 2 not-select fields, got %d", len(params.NotSelectFields))
+				}
+			},
+		},
+		{
+			name: "Parse distinct flag",
+			headers: map[string]string{
+				"X-Distinct": "true",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if !params.Distinct {
+					t.Error("Expected Distinct to be true")
+				}
+			},
+		},
+		{
+			name: "Parse field filters",
+			headers: map[string]string{
+				"X-FieldFilter-Status": "active",
+				"X-FieldFilter-Type":   "admin",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if len(params.FieldFilters) != 2 {
+					t.Errorf("Expected 2 field filters, got %d", len(params.FieldFilters))
+				}
+				if params.FieldFilters["status"] != "active" {
+					t.Errorf("Expected status filter=active, got %s", params.FieldFilters["status"])
+				}
+			},
+		},
+		{
+			name: "Parse search filters",
+			headers: map[string]string{
+				"X-SearchFilter-Name":  "john",
+				"X-SearchFilter-Email": "test",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if len(params.SearchFilters) != 2 {
+					t.Errorf("Expected 2 search filters, got %d", len(params.SearchFilters))
+				}
+			},
+		},
+		{
+			name: "Parse sort columns",
+			queryParams: map[string]string{
+				"sort": "-created_at,name",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if params.SortColumns != "-created_at,name" {
+					t.Errorf("Expected sort columns=-created_at,name, got %s", params.SortColumns)
+				}
+			},
+		},
+		{
+			name: "Parse limit and offset",
+			queryParams: map[string]string{
+				"limit":  "100",
+				"offset": "50",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if params.Limit != 100 {
+					t.Errorf("Expected limit=100, got %d", params.Limit)
+				}
+				if params.Offset != 50 {
+					t.Errorf("Expected offset=50, got %d", params.Offset)
+				}
+			},
+		},
+		{
+			name: "Parse skip count",
+			headers: map[string]string{
+				"X-SkipCount": "true",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if !params.SkipCount {
+					t.Error("Expected SkipCount to be true")
+				}
+			},
+		},
+		{
+			name: "Parse response format - syncfusion",
+			headers: map[string]string{
+				"X-Syncfusion": "true",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if params.ResponseFormat != "syncfusion" {
+					t.Errorf("Expected ResponseFormat=syncfusion, got %s", params.ResponseFormat)
+				}
+				if !params.ComplexAPI {
+					t.Error("Expected ComplexAPI to be true for syncfusion format")
+				}
+			},
+		},
+		{
+			name: "Parse response format - detail",
+			headers: map[string]string{
+				"X-DetailAPI": "true",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if params.ResponseFormat != "detail" {
+					t.Errorf("Expected ResponseFormat=detail, got %s", params.ResponseFormat)
+				}
+			},
+		},
+		{
+			name: "Parse simple API",
+			headers: map[string]string{
+				"X-SimpleAPI": "true",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if params.ResponseFormat != "simple" {
+					t.Errorf("Expected ResponseFormat=simple, got %s", params.ResponseFormat)
+				}
+				if params.ComplexAPI {
+					t.Error("Expected ComplexAPI to be false for simple API")
+				}
+			},
+		},
+		{
+			name: "Parse custom SQL WHERE",
+			headers: map[string]string{
+				"X-Custom-SQL-W": "status = 'active' AND deleted = false",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if params.CustomSQLWhere == "" {
+					t.Error("Expected CustomSQLWhere to be set")
+				}
+			},
+		},
+		{
+			name: "Parse search operators - AND",
+			headers: map[string]string{
+				"X-SearchOp-Eq-Name":  "john",
+				"X-SearchOp-Gt-Age":   "18",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if len(params.SearchOps) != 2 {
+					t.Errorf("Expected 2 search operators, got %d", len(params.SearchOps))
+				}
+				if op, exists := params.SearchOps["name"]; exists {
+					if op.Operator != "eq" {
+						t.Errorf("Expected operator=eq for name, got %s", op.Operator)
+					}
+					if op.Logic != "AND" {
+						t.Errorf("Expected logic=AND, got %s", op.Logic)
+					}
+				} else {
+					t.Error("Expected name search operator to exist")
+				}
+			},
+		},
+		{
+			name: "Parse search operators - OR",
+			headers: map[string]string{
+				"X-SearchOr-Like-Description": "test",
+			},
+			validate: func(t *testing.T, params *RequestParameters) {
+				if op, exists := params.SearchOps["description"]; exists {
+					if op.Logic != "OR" {
+						t.Errorf("Expected logic=OR, got %s", op.Logic)
+					}
+				} else {
+					t.Error("Expected description search operator to exist")
+				}
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := createTestRequest("GET", "/test", tt.queryParams, tt.headers, nil)
+			params := handler.ParseParameters(req)
+
+			if tt.validate != nil {
+				tt.validate(t, params)
+			}
+		})
+	}
+}
+
+// TestBuildFilterCondition tests the filter condition builder
+func TestBuildFilterCondition(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name      string
+		colName   string
+		operator  FilterOperator
+		expected  string
+	}{
+		{
+			name:    "Equals operator - numeric",
+			colName: "age",
+			operator: FilterOperator{
+				Operator: "eq",
+				Value:    "25",
+				Logic:    "AND",
+			},
+			expected: "age = 25",
+		},
+		{
+			name:    "Equals operator - string",
+			colName: "name",
+			operator: FilterOperator{
+				Operator: "eq",
+				Value:    "john",
+				Logic:    "AND",
+			},
+			expected: "name = 'john'",
+		},
+		{
+			name:    "Not equals operator",
+			colName: "status",
+			operator: FilterOperator{
+				Operator: "neq",
+				Value:    "inactive",
+				Logic:    "AND",
+			},
+			expected: "status != 'inactive'",
+		},
+		{
+			name:    "Greater than operator",
+			colName: "age",
+			operator: FilterOperator{
+				Operator: "gt",
+				Value:    "18",
+				Logic:    "AND",
+			},
+			expected: "age > 18",
+		},
+		{
+			name:    "Less than operator",
+			colName: "price",
+			operator: FilterOperator{
+				Operator: "lt",
+				Value:    "100",
+				Logic:    "AND",
+			},
+			expected: "price < 100",
+		},
+		{
+			name:    "Contains operator",
+			colName: "description",
+			operator: FilterOperator{
+				Operator: "contains",
+				Value:    "test",
+				Logic:    "AND",
+			},
+			expected: "description ILIKE '%test%'",
+		},
+		{
+			name:    "Starts with operator",
+			colName: "name",
+			operator: FilterOperator{
+				Operator: "startswith",
+				Value:    "john",
+				Logic:    "AND",
+			},
+			expected: "name ILIKE 'john%'",
+		},
+		{
+			name:    "Ends with operator",
+			colName: "email",
+			operator: FilterOperator{
+				Operator: "endswith",
+				Value:    "@example.com",
+				Logic:    "AND",
+			},
+			expected: "email ILIKE '%@example.com'",
+		},
+		{
+			name:    "Between operator",
+			colName: "age",
+			operator: FilterOperator{
+				Operator: "between",
+				Value:    "18,65",
+				Logic:    "AND",
+			},
+			expected: "age > 18 AND age < 65",
+		},
+		{
+			name:    "IN operator",
+			colName: "status",
+			operator: FilterOperator{
+				Operator: "in",
+				Value:    "active,pending,approved",
+				Logic:    "AND",
+			},
+			expected: "status IN ('active', 'pending', 'approved')",
+		},
+		{
+			name:    "IS NULL operator",
+			colName: "deleted_at",
+			operator: FilterOperator{
+				Operator: "null",
+				Value:    "",
+				Logic:    "AND",
+			},
+			expected: "(deleted_at IS NULL OR deleted_at = '')",
+		},
+		{
+			name:    "IS NOT NULL operator",
+			colName: "created_at",
+			operator: FilterOperator{
+				Operator: "notnull",
+				Value:    "",
+				Logic:    "AND",
+			},
+			expected: "(created_at IS NOT NULL AND created_at != '')",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := handler.buildFilterCondition(tt.colName, tt.operator)
+			if result != tt.expected {
+				t.Errorf("Expected: %s\nGot: %s", tt.expected, result)
+			}
+		})
+	}
+}
+
+// TestApplyFilters tests the filter application to SQL queries
+func TestApplyFilters(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name         string
+		sqlQuery     string
+		params       *RequestParameters
+		expectedSQL  string
+		shouldContain []string
+	}{
+		{
+			name:     "Apply field filter",
+			sqlQuery: "SELECT * FROM users",
+			params: &RequestParameters{
+				FieldFilters: map[string]string{
+					"status": "active",
+				},
+			},
+			shouldContain: []string{"WHERE", "status"},
+		},
+		{
+			name:     "Apply search filter",
+			sqlQuery: "SELECT * FROM users",
+			params: &RequestParameters{
+				SearchFilters: map[string]string{
+					"name": "john",
+				},
+			},
+			shouldContain: []string{"WHERE", "name", "ILIKE"},
+		},
+		{
+			name:     "Apply search operators",
+			sqlQuery: "SELECT * FROM users",
+			params: &RequestParameters{
+				SearchOps: map[string]FilterOperator{
+					"age": {
+						Operator: "gt",
+						Value:    "18",
+						Logic:    "AND",
+					},
+				},
+			},
+			shouldContain: []string{"WHERE", "age", ">", "18"},
+		},
+		{
+			name:     "Apply custom SQL WHERE",
+			sqlQuery: "SELECT * FROM users",
+			params: &RequestParameters{
+				CustomSQLWhere: "deleted = false",
+			},
+			shouldContain: []string{"WHERE", "deleted"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := handler.ApplyFilters(tt.sqlQuery, tt.params)
+
+			for _, expected := range tt.shouldContain {
+				if !strings.Contains(result, expected) {
+					t.Errorf("Expected SQL to contain %q, got: %s", expected, result)
+				}
+			}
+		})
+	}
+}
+
+// TestApplyDistinct tests DISTINCT application
+func TestApplyDistinct(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name        string
+		sqlQuery    string
+		distinct    bool
+		shouldHave  string
+	}{
+		{
+			name:       "Apply DISTINCT",
+			sqlQuery:   "SELECT id, name FROM users",
+			distinct:   true,
+			shouldHave: "SELECT DISTINCT",
+		},
+		{
+			name:       "Do not apply DISTINCT",
+			sqlQuery:   "SELECT id, name FROM users",
+			distinct:   false,
+			shouldHave: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			params := &RequestParameters{Distinct: tt.distinct}
+			result := handler.ApplyDistinct(tt.sqlQuery, params)
+
+			if tt.shouldHave != "" {
+				if !strings.Contains(result, tt.shouldHave) {
+					t.Errorf("Expected SQL to contain %q, got: %s", tt.shouldHave, result)
+				}
+			} else {
+				// Should not have DISTINCT when not requested
+				if strings.Contains(result, "DISTINCT") && !tt.distinct {
+					t.Errorf("SQL should not contain DISTINCT when not requested: %s", result)
+				}
+			}
+		})
+	}
+}
+
+// TestParseCommaSeparated tests comma-separated value parsing
+func TestParseCommaSeparated(t *testing.T) {
+	handler := NewHandler(&MockDatabase{})
+
+	tests := []struct {
+		name     string
+		input    string
+		expected []string
+	}{
+		{
+			name:     "Simple comma-separated",
+			input:    "id,name,email",
+			expected: []string{"id", "name", "email"},
+		},
+		{
+			name:     "With spaces",
+			input:    "id, name, email",
+			expected: []string{"id", "name", "email"},
+		},
+		{
+			name:     "Empty string",
+			input:    "",
+			expected: nil,
+		},
+		{
+			name:     "Single value",
+			input:    "id",
+			expected: []string{"id"},
+		},
+		{
+			name:     "With extra commas",
+			input:    "id,,name,,email",
+			expected: []string{"id", "name", "email"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := handler.parseCommaSeparated(tt.input)
+
+			if len(result) != len(tt.expected) {
+				t.Errorf("Expected %d values, got %d", len(tt.expected), len(result))
+				return
+			}
+
+			for i, expected := range tt.expected {
+				if result[i] != expected {
+					t.Errorf("Expected value %d to be %s, got %s", i, expected, result[i])
+				}
+			}
+		})
+	}
+}
+
+// TestSqlQryWhereOr tests OR WHERE clause manipulation
+func TestSqlQryWhereOr(t *testing.T) {
+	tests := []struct {
+		name          string
+		sqlQuery      string
+		condition     string
+		shouldContain []string
+	}{
+		{
+			name:          "Add WHERE with OR to query without WHERE",
+			sqlQuery:      "SELECT * FROM users",
+			condition:     "status = 'inactive'",
+			shouldContain: []string{"WHERE", "status = 'inactive'"},
+		},
+		{
+			name:          "Add OR to query with existing WHERE",
+			sqlQuery:      "SELECT * FROM users WHERE id > 0",
+			condition:     "status = 'inactive'",
+			shouldContain: []string{"WHERE", "OR", "(status = 'inactive')"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := sqlQryWhereOr(tt.sqlQuery, tt.condition)
+
+			for _, expected := range tt.shouldContain {
+				if !strings.Contains(result, expected) {
+					t.Errorf("Expected SQL to contain %q, got: %s", expected, result)
+				}
+			}
+		})
+	}
+}

pkg/funcspec/security_adapter.go

@@ -0,0 +1,83 @@
+package funcspec
+
+import (
+	"context"
+
+	"github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+// RegisterSecurityHooks registers security hooks for funcspec handlers
+// Note: funcspec operates on SQL queries directly, so row-level security is not directly applicable
+// We provide audit logging for data access tracking
+func RegisterSecurityHooks(handler *Handler, securityList *security.SecurityList) {
+	// Hook 1: BeforeQueryList - Audit logging before query list execution
+	handler.Hooks().Register(BeforeQueryList, func(hookCtx *HookContext) error {
+		secCtx := newFuncSpecSecurityContext(hookCtx)
+		return security.LogDataAccess(secCtx)
+	})
+
+	// Hook 2: BeforeQuery - Audit logging before single query execution
+	handler.Hooks().Register(BeforeQuery, func(hookCtx *HookContext) error {
+		secCtx := newFuncSpecSecurityContext(hookCtx)
+		return security.LogDataAccess(secCtx)
+	})
+
+	// Note: Row-level security and column masking are challenging in funcspec
+	// because the SQL query is fully user-defined. Security should be implemented
+	// at the SQL function level or through database policies (RLS).
+}
+
+// funcSpecSecurityContext adapts funcspec.HookContext to security.SecurityContext interface
+type funcSpecSecurityContext struct {
+	ctx *HookContext
+}
+
+func newFuncSpecSecurityContext(ctx *HookContext) security.SecurityContext {
+	return &funcSpecSecurityContext{ctx: ctx}
+}
+
+func (f *funcSpecSecurityContext) GetContext() context.Context {
+	return f.ctx.Context
+}
+
+func (f *funcSpecSecurityContext) GetUserID() (int, bool) {
+	if f.ctx.UserContext == nil {
+		return 0, false
+	}
+	return int(f.ctx.UserContext.UserID), true
+}
+
+func (f *funcSpecSecurityContext) GetSchema() string {
+	// funcspec doesn't have a schema concept, extract from SQL query or use default
+	return "public"
+}
+
+func (f *funcSpecSecurityContext) GetEntity() string {
+	// funcspec doesn't have an entity concept, could parse from SQL or use a placeholder
+	return "sql_query"
+}
+
+func (f *funcSpecSecurityContext) GetModel() interface{} {
+	// funcspec doesn't use models in the same way as restheadspec
+	return nil
+}
+
+func (f *funcSpecSecurityContext) GetQuery() interface{} {
+	// In funcspec, the query is a string, not a query builder object
+	return f.ctx.SQLQuery
+}
+
+func (f *funcSpecSecurityContext) SetQuery(query interface{}) {
+	// In funcspec, we could modify the SQL string, but this should be done cautiously
+	if sqlQuery, ok := query.(string); ok {
+		f.ctx.SQLQuery = sqlQuery
+	}
+}
+
+func (f *funcSpecSecurityContext) GetResult() interface{} {
+	return f.ctx.Result
+}
+
+func (f *funcSpecSecurityContext) SetResult(result interface{}) {
+	f.ctx.Result = result
+}

pkg/logger/logger.go

@@ -23,6 +23,15 @@ func Init(dev bool) {
 
 }
 
+func UpdateLoggerPath(path string, dev bool) {
+	defaultConfig := zap.NewProductionConfig()
+	if dev {
+		defaultConfig = zap.NewDevelopmentConfig()
+	}
+	defaultConfig.OutputPaths = []string{path}
+	UpdateLogger(&defaultConfig)
+}
+
 func UpdateLogger(config *zap.Config) {
 	defaultConfig := zap.NewProductionConfig()
 	defaultConfig.OutputPaths = []string{"resolvespec.log"}

pkg/reflection/generic_model.go

@@ -26,8 +26,7 @@ func GetModelColumnDetail(record reflect.Value) []ModelFieldDetail {
 		}
 	}()
 
-	var lst []ModelFieldDetail
-	lst = make([]ModelFieldDetail, 0)
+	lst := make([]ModelFieldDetail, 0)
 
 	if !record.IsValid() {
 		return lst

pkg/reflection/helpers.go

@@ -17,3 +17,33 @@ func Len(v any) int {
 		return 0
 	}
 }
+
+// ExtractTableNameOnly extracts the table name from a fully qualified table reference.
+// It removes any schema prefix (e.g., "schema.table" -> "table") and truncates at
+// the first delimiter (comma, space, tab, or newline). If the input contains multiple
+// dots, it returns everything after the last dot up to the first delimiter.
+func ExtractTableNameOnly(fullName string) string {
+	// First, split by dot to remove schema prefix if present
+	lastDotIndex := -1
+	for i, char := range fullName {
+		if char == '.' {
+			lastDotIndex = i
+		}
+	}
+
+	// Start from after the last dot (or from beginning if no dot)
+	startIndex := 0
+	if lastDotIndex != -1 {
+		startIndex = lastDotIndex + 1
+	}
+
+	// Now find the end (first delimiter after the table name)
+	for i := startIndex; i < len(fullName); i++ {
+		char := rune(fullName[i])
+		if char == ',' || char == ' ' || char == '\t' || char == '\n' {
+			return fullName[startIndex:i]
+		}
+	}
+
+	return fullName[startIndex:]
+}

pkg/reflection/model_utils.go

@@ -1,7 +1,9 @@
 package reflection
 
 import (
+	"fmt"
 	"reflect"
+	"strconv"
 	"strings"
 
 	"github.com/bitechdev/ResolveSpec/pkg/modelregistry"
@@ -132,7 +134,7 @@ func findFieldByName(val reflect.Value, name string) any {
 		}
 
 		// Check if field name matches
-		if strings.ToLower(field.Name) == name && fieldValue.CanInterface() {
+		if strings.EqualFold(field.Name, name) && fieldValue.CanInterface() {
 			return fieldValue.Interface()
 		}
 	}
@@ -409,8 +411,8 @@ func collectSQLColumnsFromType(typ reflect.Type, columns *[]string, scanOnlyEmbe
 		if bunTag != "" {
 			// Skip if it's a bun relation (rel:, join:, or m2m:)
 			if strings.Contains(bunTag, "rel:") ||
-			   strings.Contains(bunTag, "join:") ||
-			   strings.Contains(bunTag, "m2m:") {
+				strings.Contains(bunTag, "join:") ||
+				strings.Contains(bunTag, "m2m:") {
 				continue
 			}
 		}
@@ -419,9 +421,9 @@ func collectSQLColumnsFromType(typ reflect.Type, columns *[]string, scanOnlyEmbe
 		if gormTag != "" {
 			// Skip if it has gorm relationship tags
 			if strings.Contains(gormTag, "foreignKey:") ||
-			   strings.Contains(gormTag, "references:") ||
-			   strings.Contains(gormTag, "many2many:") ||
-			   strings.Contains(gormTag, "constraint:") {
+				strings.Contains(gormTag, "references:") ||
+				strings.Contains(gormTag, "many2many:") ||
+				strings.Contains(gormTag, "constraint:") {
 				continue
 			}
 		}
@@ -472,7 +474,7 @@ func IsColumnWritable(model any, columnName string) bool {
 
 // isColumnWritableInType recursively searches for a column and checks if it's writable
 // Returns (found, writable) where found indicates if the column was found
-func isColumnWritableInType(typ reflect.Type, columnName string) (bool, bool) {
+func isColumnWritableInType(typ reflect.Type, columnName string) (found bool, writable bool) {
 	for i := 0; i < typ.NumField(); i++ {
 		field := typ.Field(i)
 
@@ -561,3 +563,321 @@ func isGormFieldReadOnly(tag string) bool {
 	}
 	return false
 }
+
+// ExtractSourceColumn extracts the base column name from PostgreSQL JSON operators
+// Examples:
+//   - "columna->>'val'" returns "columna"
+//   - "columna->'key'" returns "columna"
+//   - "columna" returns "columna"
+//   - "table.columna->>'val'" returns "table.columna"
+func ExtractSourceColumn(colName string) string {
+	// Check for PostgreSQL JSON operators: -> and ->>
+	if idx := strings.Index(colName, "->>"); idx != -1 {
+		return strings.TrimSpace(colName[:idx])
+	}
+	if idx := strings.Index(colName, "->"); idx != -1 {
+		return strings.TrimSpace(colName[:idx])
+	}
+	return colName
+}
+
+// ToSnakeCase converts a string from CamelCase to snake_case
+func ToSnakeCase(s string) string {
+	var result strings.Builder
+	for i, r := range s {
+		if i > 0 && r >= 'A' && r <= 'Z' {
+			result.WriteRune('_')
+		}
+		result.WriteRune(r)
+	}
+	return strings.ToLower(result.String())
+}
+
+// GetColumnTypeFromModel uses reflection to determine the Go type of a column in a model
+func GetColumnTypeFromModel(model interface{}, colName string) reflect.Kind {
+	if model == nil {
+		return reflect.Invalid
+	}
+
+	// Extract the source column name (remove JSON operators like ->> or ->)
+	sourceColName := ExtractSourceColumn(colName)
+
+	modelType := reflect.TypeOf(model)
+	// Dereference pointer if needed
+	if modelType.Kind() == reflect.Ptr {
+		modelType = modelType.Elem()
+	}
+
+	// Ensure it's a struct
+	if modelType.Kind() != reflect.Struct {
+		return reflect.Invalid
+	}
+
+	// Find the field by JSON tag or field name
+	for i := 0; i < modelType.NumField(); i++ {
+		field := modelType.Field(i)
+
+		// Check JSON tag
+		jsonTag := field.Tag.Get("json")
+		if jsonTag != "" {
+			// Parse JSON tag (format: "name,omitempty")
+			parts := strings.Split(jsonTag, ",")
+			if parts[0] == sourceColName {
+				return field.Type.Kind()
+			}
+		}
+
+		// Check field name (case-insensitive)
+		if strings.EqualFold(field.Name, sourceColName) {
+			return field.Type.Kind()
+		}
+
+		// Check snake_case conversion
+		snakeCaseName := ToSnakeCase(field.Name)
+		if snakeCaseName == sourceColName {
+			return field.Type.Kind()
+		}
+	}
+
+	return reflect.Invalid
+}
+
+// IsNumericType checks if a reflect.Kind is a numeric type
+func IsNumericType(kind reflect.Kind) bool {
+	return kind == reflect.Int || kind == reflect.Int8 || kind == reflect.Int16 ||
+		kind == reflect.Int32 || kind == reflect.Int64 || kind == reflect.Uint ||
+		kind == reflect.Uint8 || kind == reflect.Uint16 || kind == reflect.Uint32 ||
+		kind == reflect.Uint64 || kind == reflect.Float32 || kind == reflect.Float64
+}
+
+// IsStringType checks if a reflect.Kind is a string type
+func IsStringType(kind reflect.Kind) bool {
+	return kind == reflect.String
+}
+
+// IsNumericValue checks if a string value can be parsed as a number
+func IsNumericValue(value string) bool {
+	value = strings.TrimSpace(value)
+	_, err := strconv.ParseFloat(value, 64)
+	return err == nil
+}
+
+// ConvertToNumericType converts a string value to the appropriate numeric type
+func ConvertToNumericType(value string, kind reflect.Kind) (interface{}, error) {
+	value = strings.TrimSpace(value)
+
+	switch kind {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		// Parse as integer
+		bitSize := 64
+		switch kind {
+		case reflect.Int8:
+			bitSize = 8
+		case reflect.Int16:
+			bitSize = 16
+		case reflect.Int32:
+			bitSize = 32
+		}
+
+		intVal, err := strconv.ParseInt(value, 10, bitSize)
+		if err != nil {
+			return nil, fmt.Errorf("invalid integer value: %w", err)
+		}
+
+		// Return the appropriate type
+		switch kind {
+		case reflect.Int:
+			return int(intVal), nil
+		case reflect.Int8:
+			return int8(intVal), nil
+		case reflect.Int16:
+			return int16(intVal), nil
+		case reflect.Int32:
+			return int32(intVal), nil
+		case reflect.Int64:
+			return intVal, nil
+		}
+
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		// Parse as unsigned integer
+		bitSize := 64
+		switch kind {
+		case reflect.Uint8:
+			bitSize = 8
+		case reflect.Uint16:
+			bitSize = 16
+		case reflect.Uint32:
+			bitSize = 32
+		}
+
+		uintVal, err := strconv.ParseUint(value, 10, bitSize)
+		if err != nil {
+			return nil, fmt.Errorf("invalid unsigned integer value: %w", err)
+		}
+
+		// Return the appropriate type
+		switch kind {
+		case reflect.Uint:
+			return uint(uintVal), nil
+		case reflect.Uint8:
+			return uint8(uintVal), nil
+		case reflect.Uint16:
+			return uint16(uintVal), nil
+		case reflect.Uint32:
+			return uint32(uintVal), nil
+		case reflect.Uint64:
+			return uintVal, nil
+		}
+
+	case reflect.Float32, reflect.Float64:
+		// Parse as float
+		bitSize := 64
+		if kind == reflect.Float32 {
+			bitSize = 32
+		}
+
+		floatVal, err := strconv.ParseFloat(value, bitSize)
+		if err != nil {
+			return nil, fmt.Errorf("invalid float value: %w", err)
+		}
+
+		if kind == reflect.Float32 {
+			return float32(floatVal), nil
+		}
+		return floatVal, nil
+	}
+
+	return nil, fmt.Errorf("unsupported numeric type: %v", kind)
+}
+
+// GetRelationModel gets the model type for a relation field
+// It searches for the field by name in the following order (case-insensitive):
+// 1. Actual field name
+// 2. Bun tag name (if exists)
+// 3. Gorm tag name (if exists)
+// 4. JSON tag name (if exists)
+//
+// Supports recursive field paths using dot notation (e.g., "MAL.MAL.DEF")
+// For nested fields, it traverses through each level of the struct hierarchy
+func GetRelationModel(model interface{}, fieldName string) interface{} {
+	if model == nil || fieldName == "" {
+		return nil
+	}
+
+	// Split the field name by "." to handle nested/recursive relations
+	fieldParts := strings.Split(fieldName, ".")
+
+	// Start with the current model
+	currentModel := model
+
+	// Traverse through each level of the field path
+	for _, part := range fieldParts {
+		if part == "" {
+			continue
+		}
+
+		currentModel = getRelationModelSingleLevel(currentModel, part)
+		if currentModel == nil {
+			return nil
+		}
+	}
+
+	return currentModel
+}
+
+// getRelationModelSingleLevel gets the model type for a single level field (non-recursive)
+// This is a helper function used by GetRelationModel to handle one level at a time
+func getRelationModelSingleLevel(model interface{}, fieldName string) interface{} {
+	if model == nil || fieldName == "" {
+		return nil
+	}
+
+	modelType := reflect.TypeOf(model)
+	if modelType == nil {
+		return nil
+	}
+
+	if modelType.Kind() == reflect.Ptr {
+		modelType = modelType.Elem()
+	}
+
+	if modelType == nil || modelType.Kind() != reflect.Struct {
+		return nil
+	}
+
+	// Find the field by checking in priority order (case-insensitive)
+	var field *reflect.StructField
+	normalizedFieldName := strings.ToLower(fieldName)
+
+	for i := 0; i < modelType.NumField(); i++ {
+		f := modelType.Field(i)
+
+		// 1. Check actual field name (case-insensitive)
+		if strings.EqualFold(f.Name, fieldName) {
+			field = &f
+			break
+		}
+
+		// 2. Check bun tag name
+		bunTag := f.Tag.Get("bun")
+		if bunTag != "" {
+			bunColName := ExtractColumnFromBunTag(bunTag)
+			if bunColName != "" && strings.EqualFold(bunColName, normalizedFieldName) {
+				field = &f
+				break
+			}
+		}
+
+		// 3. Check gorm tag name
+		gormTag := f.Tag.Get("gorm")
+		if gormTag != "" {
+			gormColName := ExtractColumnFromGormTag(gormTag)
+			if gormColName != "" && strings.EqualFold(gormColName, normalizedFieldName) {
+				field = &f
+				break
+			}
+		}
+
+		// 4. Check JSON tag name
+		jsonTag := f.Tag.Get("json")
+		if jsonTag != "" {
+			parts := strings.Split(jsonTag, ",")
+			if len(parts) > 0 && parts[0] != "" && parts[0] != "-" {
+				if strings.EqualFold(parts[0], normalizedFieldName) {
+					field = &f
+					break
+				}
+			}
+		}
+	}
+
+	if field == nil {
+		return nil
+	}
+
+	// Get the target type
+	targetType := field.Type
+	if targetType == nil {
+		return nil
+	}
+
+	if targetType.Kind() == reflect.Slice {
+		targetType = targetType.Elem()
+		if targetType == nil {
+			return nil
+		}
+	}
+	if targetType.Kind() == reflect.Ptr {
+		targetType = targetType.Elem()
+		if targetType == nil {
+			return nil
+		}
+	}
+
+	if targetType.Kind() != reflect.Struct {
+		return nil
+	}
+
+	// Create a zero value of the target type
+	return reflect.New(targetType).Elem().Interface()
+}

pkg/resolvespec/handler.go

@@ -8,17 +8,25 @@ import (
 	"reflect"
 	"runtime/debug"
 	"strings"
+	"time"
 
+	"github.com/bitechdev/ResolveSpec/pkg/cache"
 	"github.com/bitechdev/ResolveSpec/pkg/common"
 	"github.com/bitechdev/ResolveSpec/pkg/logger"
 	"github.com/bitechdev/ResolveSpec/pkg/reflection"
 )
 
+// FallbackHandler is a function that handles requests when no model is found
+// It receives the same parameters as the Handle method
+type FallbackHandler func(w common.ResponseWriter, r common.Request, params map[string]string)
+
 // Handler handles API requests using database and model abstractions
 type Handler struct {
 	db              common.Database
 	registry        common.ModelRegistry
 	nestedProcessor *common.NestedCUDProcessor
+	hooks           *HookRegistry
+	fallbackHandler FallbackHandler
 }
 
 // NewHandler creates a new API handler with database and registry abstractions
@@ -26,12 +34,31 @@ func NewHandler(db common.Database, registry common.ModelRegistry) *Handler {
 	handler := &Handler{
 		db:       db,
 		registry: registry,
+		hooks:    NewHookRegistry(),
 	}
 	// Initialize nested processor
 	handler.nestedProcessor = common.NewNestedCUDProcessor(db, registry, handler)
 	return handler
 }
 
+// Hooks returns the hook registry for this handler
+// Use this to register custom hooks for operations
+func (h *Handler) Hooks() *HookRegistry {
+	return h.hooks
+}
+
+// SetFallbackHandler sets a fallback handler to be called when no model is found
+// If not set, the handler will simply return (pass through to next route)
+func (h *Handler) SetFallbackHandler(fallback FallbackHandler) {
+	h.fallbackHandler = fallback
+}
+
+// GetDatabase returns the underlying database connection
+// Implements common.SpecHandler interface
+func (h *Handler) GetDatabase() common.Database {
+	return h.db
+}
+
 // handlePanic is a helper function to handle panics with stack traces
 func (h *Handler) handlePanic(w common.ResponseWriter, method string, err interface{}) {
 	stack := debug.Stack()
@@ -73,8 +100,14 @@ func (h *Handler) Handle(w common.ResponseWriter, r common.Request, params map[s
 	// Get model and populate context with request-scoped data
 	model, err := h.registry.GetModelByEntity(schema, entity)
 	if err != nil {
-		logger.Error("Invalid entity: %v", err)
-		h.sendError(w, http.StatusBadRequest, "invalid_entity", "Invalid entity", err)
+		// Model not found - call fallback handler if set, otherwise pass through
+		logger.Debug("Model not found for %s.%s", schema, entity)
+		if h.fallbackHandler != nil {
+			logger.Debug("Calling fallback handler for %s.%s", schema, entity)
+			h.fallbackHandler(w, r, params)
+		} else {
+			logger.Debug("No fallback handler set, passing through to next route")
+		}
 		return
 	}
 
@@ -118,6 +151,8 @@ func (h *Handler) Handle(w common.ResponseWriter, r common.Request, params map[s
 		h.handleUpdate(ctx, w, id, req.ID, req.Data, req.Options)
 	case "delete":
 		h.handleDelete(ctx, w, id, req.Data)
+	case "meta":
+		h.handleMeta(ctx, w, schema, entity, model)
 	default:
 		logger.Error("Invalid operation: %s", req.Operation)
 		h.sendError(w, http.StatusBadRequest, "invalid_operation", "Invalid operation", nil)
@@ -140,8 +175,14 @@ func (h *Handler) HandleGet(w common.ResponseWriter, r common.Request, params ma
 
 	model, err := h.registry.GetModelByEntity(schema, entity)
 	if err != nil {
-		logger.Error("Failed to get model: %v", err)
-		h.sendError(w, http.StatusBadRequest, "invalid_entity", "Invalid entity", err)
+		// Model not found - call fallback handler if set, otherwise pass through
+		logger.Debug("Model not found for %s.%s", schema, entity)
+		if h.fallbackHandler != nil {
+			logger.Debug("Calling fallback handler for %s.%s", schema, entity)
+			h.fallbackHandler(w, r, params)
+		} else {
+			logger.Debug("No fallback handler set, passing through to next route")
+		}
 		return
 	}
 
@@ -149,6 +190,21 @@ func (h *Handler) HandleGet(w common.ResponseWriter, r common.Request, params ma
 	h.sendResponse(w, metadata, nil)
 }
 
+// handleMeta processes meta operation requests
+func (h *Handler) handleMeta(ctx context.Context, w common.ResponseWriter, schema, entity string, model interface{}) {
+	// Capture panics and return error response
+	defer func() {
+		if err := recover(); err != nil {
+			h.handlePanic(w, "handleMeta", err)
+		}
+	}()
+
+	logger.Info("Getting metadata for %s.%s via meta operation", schema, entity)
+
+	metadata := h.generateMetadata(schema, entity, model)
+	h.sendResponse(w, metadata, nil)
+}
+
 func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id string, options common.RequestOptions) {
 	// Capture panics and return error response
 	defer func() {
@@ -199,7 +255,9 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	// Apply column selection
 	if len(options.Columns) > 0 {
 		logger.Debug("Selecting columns: %v", options.Columns)
-		query = query.Column(options.Columns...)
+		for _, col := range options.Columns {
+			query = query.Column(reflection.ExtractSourceColumn(col))
+		}
 	}
 
 	if len(options.ComputedColumns) > 0 {
@@ -231,13 +289,46 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	}
 
 	// Get total count before pagination
-	total, err := query.Count(ctx)
-	if err != nil {
-		logger.Error("Error counting records: %v", err)
-		h.sendError(w, http.StatusInternalServerError, "query_error", "Error counting records", err)
-		return
+	var total int
+
+	// Try to get from cache first
+	cacheKeyHash := cache.BuildQueryCacheKey(
+		tableName,
+		options.Filters,
+		options.Sort,
+		"", // No custom SQL WHERE in resolvespec
+		"", // No custom SQL OR in resolvespec
+	)
+	cacheKey := cache.GetQueryTotalCacheKey(cacheKeyHash)
+
+	// Try to retrieve from cache
+	var cachedTotal cache.CachedTotal
+	err := cache.GetDefaultCache().Get(ctx, cacheKey, &cachedTotal)
+	if err == nil {
+		total = cachedTotal.Total
+		logger.Debug("Total records (from cache): %d", total)
+	} else {
+		// Cache miss - execute count query
+		logger.Debug("Cache miss for query total")
+		count, err := query.Count(ctx)
+		if err != nil {
+			logger.Error("Error counting records: %v", err)
+			h.sendError(w, http.StatusInternalServerError, "query_error", "Error counting records", err)
+			return
+		}
+		total = count
+		logger.Debug("Total records (from query): %d", total)
+
+		// Store in cache
+		cacheTTL := time.Minute * 2 // Default 2 minutes TTL
+		cacheData := cache.CachedTotal{Total: total}
+		if err := cache.GetDefaultCache().Set(ctx, cacheKey, cacheData, cacheTTL); err != nil {
+			logger.Warn("Failed to cache query total: %v", err)
+			// Don't fail the request if caching fails
+		} else {
+			logger.Debug("Cached query total with key: %s", cacheKey)
+		}
 	}
-	logger.Debug("Total records before filtering: %d", total)
 
 	// Apply pagination
 	if options.Limit != nil && *options.Limit > 0 {
@@ -1149,6 +1240,11 @@ func (h *Handler) applyPreloads(model interface{}, query common.SelectQuery, pre
 
 		logger.Debug("Applying preload: %s", relationFieldName)
 		query = query.PreloadRelation(relationFieldName, func(sq common.SelectQuery) common.SelectQuery {
+			if len(preload.Columns) == 0 && (len(preload.ComputedQL) > 0 || len(preload.OmitColumns) > 0) {
+				preload.Columns = reflection.GetSQLModelColumns(model)
+			}
+
+			// Handle column selection and omission
 			if len(preload.OmitColumns) > 0 {
 				allCols := reflection.GetSQLModelColumns(model)
 				// Remove omitted columns
@@ -1204,7 +1300,10 @@ func (h *Handler) applyPreloads(model interface{}, query common.SelectQuery, pre
 			}
 
 			if len(preload.Where) > 0 {
-				sq = sq.Where(preload.Where)
+				sanitizedWhere := common.SanitizeWhereClause(preload.Where, reflection.ExtractTableNameOnly(preload.Relation))
+				if len(sanitizedWhere) > 0 {
+					sq = sq.Where(sanitizedWhere)
+				}
 			}
 
 			if preload.Limit != nil && *preload.Limit > 0 {

pkg/resolvespec/hooks.go

@@ -0,0 +1,152 @@
+package resolvespec
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+	"github.com/bitechdev/ResolveSpec/pkg/logger"
+)
+
+// HookType defines the type of hook to execute
+type HookType string
+
+const (
+	// Read operation hooks
+	BeforeRead HookType = "before_read"
+	AfterRead  HookType = "after_read"
+
+	// Create operation hooks
+	BeforeCreate HookType = "before_create"
+	AfterCreate  HookType = "after_create"
+
+	// Update operation hooks
+	BeforeUpdate HookType = "before_update"
+	AfterUpdate  HookType = "after_update"
+
+	// Delete operation hooks
+	BeforeDelete HookType = "before_delete"
+	AfterDelete  HookType = "after_delete"
+
+	// Scan/Execute operation hooks (for query building)
+	BeforeScan HookType = "before_scan"
+)
+
+// HookContext contains all the data available to a hook
+type HookContext struct {
+	Context context.Context
+	Handler *Handler // Reference to the handler for accessing database, registry, etc.
+	Schema  string
+	Entity  string
+	Model   interface{}
+	Options common.RequestOptions
+	Writer  common.ResponseWriter
+	Request common.Request
+
+	// Operation-specific fields
+	ID     string
+	Data   interface{} // For create/update operations
+	Result interface{} // For after hooks
+	Error  error       // For after hooks
+
+	// Query chain - allows hooks to modify the query before execution
+	Query common.SelectQuery
+
+	// Allow hooks to abort the operation
+	Abort        bool   // If set to true, the operation will be aborted
+	AbortMessage string // Message to return if aborted
+	AbortCode    int    // HTTP status code if aborted
+}
+
+// HookFunc is the signature for hook functions
+// It receives a HookContext and can modify it or return an error
+// If an error is returned, the operation will be aborted
+type HookFunc func(*HookContext) error
+
+// HookRegistry manages all registered hooks
+type HookRegistry struct {
+	hooks map[HookType][]HookFunc
+}
+
+// NewHookRegistry creates a new hook registry
+func NewHookRegistry() *HookRegistry {
+	return &HookRegistry{
+		hooks: make(map[HookType][]HookFunc),
+	}
+}
+
+// Register adds a new hook for the specified hook type
+func (r *HookRegistry) Register(hookType HookType, hook HookFunc) {
+	if r.hooks == nil {
+		r.hooks = make(map[HookType][]HookFunc)
+	}
+	r.hooks[hookType] = append(r.hooks[hookType], hook)
+	logger.Info("Registered resolvespec hook for %s (total: %d)", hookType, len(r.hooks[hookType]))
+}
+
+// RegisterMultiple registers a hook for multiple hook types
+func (r *HookRegistry) RegisterMultiple(hookTypes []HookType, hook HookFunc) {
+	for _, hookType := range hookTypes {
+		r.Register(hookType, hook)
+	}
+}
+
+// Execute runs all hooks for the specified type in order
+// If any hook returns an error, execution stops and the error is returned
+func (r *HookRegistry) Execute(hookType HookType, ctx *HookContext) error {
+	hooks, exists := r.hooks[hookType]
+	if !exists || len(hooks) == 0 {
+		return nil
+	}
+
+	logger.Debug("Executing %d resolvespec hook(s) for %s", len(hooks), hookType)
+
+	for i, hook := range hooks {
+		if err := hook(ctx); err != nil {
+			logger.Error("Resolvespec hook %d for %s failed: %v", i+1, hookType, err)
+			return fmt.Errorf("hook execution failed: %w", err)
+		}
+
+		// Check if hook requested abort
+		if ctx.Abort {
+			logger.Warn("Resolvespec hook %d for %s requested abort: %s", i+1, hookType, ctx.AbortMessage)
+			return fmt.Errorf("operation aborted by hook: %s", ctx.AbortMessage)
+		}
+	}
+
+	return nil
+}
+
+// Clear removes all hooks for the specified type
+func (r *HookRegistry) Clear(hookType HookType) {
+	delete(r.hooks, hookType)
+	logger.Info("Cleared all resolvespec hooks for %s", hookType)
+}
+
+// ClearAll removes all registered hooks
+func (r *HookRegistry) ClearAll() {
+	r.hooks = make(map[HookType][]HookFunc)
+	logger.Info("Cleared all resolvespec hooks")
+}
+
+// Count returns the number of hooks registered for a specific type
+func (r *HookRegistry) Count(hookType HookType) int {
+	if hooks, exists := r.hooks[hookType]; exists {
+		return len(hooks)
+	}
+	return 0
+}
+
+// HasHooks returns true if there are any hooks registered for the specified type
+func (r *HookRegistry) HasHooks(hookType HookType) bool {
+	return r.Count(hookType) > 0
+}
+
+// GetAllHookTypes returns all hook types that have registered hooks
+func (r *HookRegistry) GetAllHookTypes() []HookType {
+	types := make([]HookType, 0, len(r.hooks))
+	for hookType := range r.hooks {
+		types = append(types, hookType)
+	}
+	return types
+}

pkg/resolvespec/resolvespec.go

@@ -2,12 +2,14 @@ package resolvespec
 
 import (
 	"net/http"
+	"strings"
 
 	"github.com/gorilla/mux"
 	"github.com/uptrace/bun"
 	"github.com/uptrace/bunrouter"
 	"gorm.io/gorm"
 
+	"github.com/bitechdev/ResolveSpec/pkg/common"
 	"github.com/bitechdev/ResolveSpec/pkg/common/adapters/database"
 	"github.com/bitechdev/ResolveSpec/pkg/common/adapters/router"
 	"github.com/bitechdev/ResolveSpec/pkg/modelregistry"
@@ -37,28 +39,122 @@ func NewStandardBunRouter() *router.StandardBunRouterAdapter {
 	return router.NewStandardBunRouterAdapter()
 }
 
+// MiddlewareFunc is a function that wraps an http.Handler with additional functionality
+type MiddlewareFunc func(http.Handler) http.Handler
+
 // SetupMuxRoutes sets up routes for the ResolveSpec API with Mux
-func SetupMuxRoutes(muxRouter *mux.Router, handler *Handler) {
-	muxRouter.HandleFunc("/{schema}/{entity}", func(w http.ResponseWriter, r *http.Request) {
-		vars := mux.Vars(r)
-		reqAdapter := router.NewHTTPRequest(r)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, vars)
-	}).Methods("POST")
+// authMiddleware is optional - if provided, routes will be protected with the middleware
+// Example: SetupMuxRoutes(router, handler, func(h http.Handler) http.Handler { return security.NewAuthHandler(securityList, h) })
+func SetupMuxRoutes(muxRouter *mux.Router, handler *Handler, authMiddleware MiddlewareFunc) {
+	// Get all registered models from the registry
+	allModels := handler.registry.GetAllModels()
 
-	muxRouter.HandleFunc("/{schema}/{entity}/{id}", func(w http.ResponseWriter, r *http.Request) {
-		vars := mux.Vars(r)
-		reqAdapter := router.NewHTTPRequest(r)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, vars)
-	}).Methods("POST")
+	// Loop through each registered model and create explicit routes
+	for fullName := range allModels {
+		// Parse the full name (e.g., "public.users" or just "users")
+		schema, entity := parseModelName(fullName)
 
-	muxRouter.HandleFunc("/{schema}/{entity}", func(w http.ResponseWriter, r *http.Request) {
-		vars := mux.Vars(r)
-		reqAdapter := router.NewHTTPRequest(r)
+		// Build the route paths
+		entityPath := buildRoutePath(schema, entity)
+		entityWithIDPath := buildRoutePath(schema, entity) + "/{id}"
+
+		// Create handler functions for this specific entity
+		postEntityHandler := createMuxHandler(handler, schema, entity, "")
+		postEntityWithIDHandler := createMuxHandler(handler, schema, entity, "id")
+		getEntityHandler := createMuxGetHandler(handler, schema, entity, "")
+		optionsEntityHandler := createMuxOptionsHandler(handler, schema, entity, []string{"GET", "POST", "OPTIONS"})
+		optionsEntityWithIDHandler := createMuxOptionsHandler(handler, schema, entity, []string{"POST", "OPTIONS"})
+
+		// Apply authentication middleware if provided
+		if authMiddleware != nil {
+			postEntityHandler = authMiddleware(postEntityHandler).(http.HandlerFunc)
+			postEntityWithIDHandler = authMiddleware(postEntityWithIDHandler).(http.HandlerFunc)
+			getEntityHandler = authMiddleware(getEntityHandler).(http.HandlerFunc)
+			// Don't apply auth middleware to OPTIONS - CORS preflight must not require auth
+		}
+
+		// Register routes for this entity
+		muxRouter.Handle(entityPath, postEntityHandler).Methods("POST")
+		muxRouter.Handle(entityWithIDPath, postEntityWithIDHandler).Methods("POST")
+		muxRouter.Handle(entityPath, getEntityHandler).Methods("GET")
+		muxRouter.Handle(entityPath, optionsEntityHandler).Methods("OPTIONS")
+		muxRouter.Handle(entityWithIDPath, optionsEntityWithIDHandler).Methods("OPTIONS")
+	}
+}
+
+// Helper function to create Mux handler for a specific entity with CORS support
+func createMuxHandler(handler *Handler, schema, entity, idParam string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Set CORS headers
+		corsConfig := common.DefaultCORSConfig()
 		respAdapter := router.NewHTTPResponseWriter(w)
+		common.SetCORSHeaders(respAdapter, corsConfig)
+
+		vars := make(map[string]string)
+		vars["schema"] = schema
+		vars["entity"] = entity
+		if idParam != "" {
+			vars["id"] = mux.Vars(r)[idParam]
+		}
+		reqAdapter := router.NewHTTPRequest(r)
+		handler.Handle(respAdapter, reqAdapter, vars)
+	}
+}
+
+// Helper function to create Mux GET handler for a specific entity with CORS support
+func createMuxGetHandler(handler *Handler, schema, entity, idParam string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Set CORS headers
+		corsConfig := common.DefaultCORSConfig()
+		respAdapter := router.NewHTTPResponseWriter(w)
+		common.SetCORSHeaders(respAdapter, corsConfig)
+
+		vars := make(map[string]string)
+		vars["schema"] = schema
+		vars["entity"] = entity
+		if idParam != "" {
+			vars["id"] = mux.Vars(r)[idParam]
+		}
+		reqAdapter := router.NewHTTPRequest(r)
 		handler.HandleGet(respAdapter, reqAdapter, vars)
-	}).Methods("GET")
+	}
+}
+
+// Helper function to create Mux OPTIONS handler that returns metadata
+func createMuxOptionsHandler(handler *Handler, schema, entity string, allowedMethods []string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Set CORS headers with the allowed methods for this route
+		corsConfig := common.DefaultCORSConfig()
+		corsConfig.AllowedMethods = allowedMethods
+		respAdapter := router.NewHTTPResponseWriter(w)
+		common.SetCORSHeaders(respAdapter, corsConfig)
+
+		// Return metadata in the OPTIONS response body
+		vars := make(map[string]string)
+		vars["schema"] = schema
+		vars["entity"] = entity
+		reqAdapter := router.NewHTTPRequest(r)
+		handler.HandleGet(respAdapter, reqAdapter, vars)
+	}
+}
+
+// parseModelName parses a model name like "public.users" into schema and entity
+// If no schema is present, returns empty string for schema
+func parseModelName(fullName string) (schema, entity string) {
+	parts := strings.Split(fullName, ".")
+	if len(parts) == 2 {
+		return parts[0], parts[1]
+	}
+	return "", fullName
+}
+
+// buildRoutePath builds a route path from schema and entity
+// If schema is empty, returns just "/entity", otherwise "/{schema}/{entity}"
+func buildRoutePath(schema, entity string) string {
+	if schema == "" {
+		return "/" + entity
+	}
+	return "/" + schema + "/" + entity
 }
 
 // Example usage functions for documentation:
@@ -68,12 +164,20 @@ func ExampleWithGORM(db *gorm.DB) {
 	// Create handler using GORM
 	handler := NewHandlerWithGORM(db)
 
-	// Setup router
+	// Setup router without authentication
 	muxRouter := mux.NewRouter()
-	SetupMuxRoutes(muxRouter, handler)
+	SetupMuxRoutes(muxRouter, handler, nil)
 
 	// Register models
 	// handler.RegisterModel("public", "users", &User{})
+
+	// To add authentication, pass a middleware function:
+	// import "github.com/bitechdev/ResolveSpec/pkg/security"
+	// secList := security.NewSecurityList(myProvider)
+	// authMiddleware := func(h http.Handler) http.Handler {
+	//     return security.NewAuthHandler(secList, h)
+	// }
+	// SetupMuxRoutes(muxRouter, handler, authMiddleware)
 }
 
 // ExampleWithBun shows how to switch to Bun ORM
@@ -88,60 +192,118 @@ func ExampleWithBun(bunDB *bun.DB) {
 	// Create handler
 	handler := NewHandler(dbAdapter, registry)
 
-	// Setup routes
+	// Setup routes without authentication
 	muxRouter := mux.NewRouter()
-	SetupMuxRoutes(muxRouter, handler)
+	SetupMuxRoutes(muxRouter, handler, nil)
 }
 
 // SetupBunRouterRoutes sets up bunrouter routes for the ResolveSpec API
 func SetupBunRouterRoutes(bunRouter *router.StandardBunRouterAdapter, handler *Handler) {
 	r := bunRouter.GetBunRouter()
 
-	r.Handle("POST", "/:schema/:entity", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-		}
-		reqAdapter := router.NewHTTPRequest(req.Request)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+	// Get all registered models from the registry
+	allModels := handler.registry.GetAllModels()
 
-	r.Handle("POST", "/:schema/:entity/:id", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-			"id":     req.Param("id"),
-		}
-		reqAdapter := router.NewHTTPRequest(req.Request)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+	// CORS config
+	corsConfig := common.DefaultCORSConfig()
 
-	r.Handle("GET", "/:schema/:entity", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-		}
-		reqAdapter := router.NewHTTPRequest(req.Request)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.HandleGet(respAdapter, reqAdapter, params)
-		return nil
-	})
+	// Loop through each registered model and create explicit routes
+	for fullName := range allModels {
+		// Parse the full name (e.g., "public.users" or just "users")
+		schema, entity := parseModelName(fullName)
 
-	r.Handle("GET", "/:schema/:entity/:id", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-			"id":     req.Param("id"),
-		}
-		reqAdapter := router.NewHTTPRequest(req.Request)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.HandleGet(respAdapter, reqAdapter, params)
-		return nil
-	})
+		// Build the route paths
+		entityPath := buildRoutePath(schema, entity)
+		entityWithIDPath := entityPath + "/:id"
+
+		// Create closure variables to capture current schema and entity
+		currentSchema := schema
+		currentEntity := entity
+
+		// POST route without ID
+		r.Handle("POST", entityPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewHTTPRequest(req.Request)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		// POST route with ID
+		r.Handle("POST", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+				"id":     req.Param("id"),
+			}
+			reqAdapter := router.NewHTTPRequest(req.Request)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		// GET route without ID
+		r.Handle("GET", entityPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewHTTPRequest(req.Request)
+			handler.HandleGet(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		// GET route with ID
+		r.Handle("GET", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+				"id":     req.Param("id"),
+			}
+			reqAdapter := router.NewHTTPRequest(req.Request)
+			handler.HandleGet(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		// OPTIONS route without ID (returns metadata)
+		r.Handle("OPTIONS", entityPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			optionsCorsConfig := corsConfig
+			optionsCorsConfig.AllowedMethods = []string{"GET", "POST", "OPTIONS"}
+			common.SetCORSHeaders(respAdapter, optionsCorsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewHTTPRequest(req.Request)
+			handler.HandleGet(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		// OPTIONS route with ID (returns metadata)
+		r.Handle("OPTIONS", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			optionsCorsConfig := corsConfig
+			optionsCorsConfig.AllowedMethods = []string{"POST", "OPTIONS"}
+			common.SetCORSHeaders(respAdapter, optionsCorsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewHTTPRequest(req.Request)
+			handler.HandleGet(respAdapter, reqAdapter, params)
+			return nil
+		})
+	}
 }
 
 // ExampleWithBunRouter shows how to use bunrouter from uptrace

pkg/resolvespec/security_hooks.go

@@ -0,0 +1,85 @@
+package resolvespec
+
+import (
+	"context"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+	"github.com/bitechdev/ResolveSpec/pkg/logger"
+	"github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+// RegisterSecurityHooks registers all security-related hooks with the handler
+func RegisterSecurityHooks(handler *Handler, securityList *security.SecurityList) {
+	// Hook 1: BeforeRead - Load security rules
+	handler.Hooks().Register(BeforeRead, func(hookCtx *HookContext) error {
+		secCtx := newSecurityContext(hookCtx)
+		return security.LoadSecurityRules(secCtx, securityList)
+	})
+
+	// Hook 2: BeforeScan - Apply row-level security filters
+	handler.Hooks().Register(BeforeScan, func(hookCtx *HookContext) error {
+		secCtx := newSecurityContext(hookCtx)
+		return security.ApplyRowSecurity(secCtx, securityList)
+	})
+
+	// Hook 3: AfterRead - Apply column-level security (masking)
+	handler.Hooks().Register(AfterRead, func(hookCtx *HookContext) error {
+		secCtx := newSecurityContext(hookCtx)
+		return security.ApplyColumnSecurity(secCtx, securityList)
+	})
+
+	// Hook 4 (Optional): Audit logging
+	handler.Hooks().Register(AfterRead, func(hookCtx *HookContext) error {
+		secCtx := newSecurityContext(hookCtx)
+		return security.LogDataAccess(secCtx)
+	})
+
+	logger.Info("Security hooks registered for resolvespec handler")
+}
+
+// securityContext adapts resolvespec.HookContext to security.SecurityContext interface
+type securityContext struct {
+	ctx *HookContext
+}
+
+func newSecurityContext(ctx *HookContext) security.SecurityContext {
+	return &securityContext{ctx: ctx}
+}
+
+func (s *securityContext) GetContext() context.Context {
+	return s.ctx.Context
+}
+
+func (s *securityContext) GetUserID() (int, bool) {
+	return security.GetUserID(s.ctx.Context)
+}
+
+func (s *securityContext) GetSchema() string {
+	return s.ctx.Schema
+}
+
+func (s *securityContext) GetEntity() string {
+	return s.ctx.Entity
+}
+
+func (s *securityContext) GetModel() interface{} {
+	return s.ctx.Model
+}
+
+func (s *securityContext) GetQuery() interface{} {
+	return s.ctx.Query
+}
+
+func (s *securityContext) SetQuery(query interface{}) {
+	if q, ok := query.(common.SelectQuery); ok {
+		s.ctx.Query = q
+	}
+}
+
+func (s *securityContext) GetResult() interface{} {
+	return s.ctx.Result
+}
+
+func (s *securityContext) SetResult(result interface{}) {
+	s.ctx.Result = result
+}

pkg/restheadspec/handler.go

@@ -9,12 +9,18 @@ import (
 	"runtime/debug"
 	"strconv"
 	"strings"
+	"time"
 
+	"github.com/bitechdev/ResolveSpec/pkg/cache"
 	"github.com/bitechdev/ResolveSpec/pkg/common"
 	"github.com/bitechdev/ResolveSpec/pkg/logger"
 	"github.com/bitechdev/ResolveSpec/pkg/reflection"
 )
 
+// FallbackHandler is a function that handles requests when no model is found
+// It receives the same parameters as the Handle method
+type FallbackHandler func(w common.ResponseWriter, r common.Request, params map[string]string)
+
 // Handler handles API requests using database and model abstractions
 // This handler reads filters, columns, and options from HTTP headers
 type Handler struct {
@@ -22,6 +28,7 @@ type Handler struct {
 	registry        common.ModelRegistry
 	hooks           *HookRegistry
 	nestedProcessor *common.NestedCUDProcessor
+	fallbackHandler FallbackHandler
 }
 
 // NewHandler creates a new API handler with database and registry abstractions
@@ -36,12 +43,24 @@ func NewHandler(db common.Database, registry common.ModelRegistry) *Handler {
 	return handler
 }
 
+// GetDatabase returns the underlying database connection
+// Implements common.SpecHandler interface
+func (h *Handler) GetDatabase() common.Database {
+	return h.db
+}
+
 // Hooks returns the hook registry for this handler
 // Use this to register custom hooks for operations
 func (h *Handler) Hooks() *HookRegistry {
 	return h.hooks
 }
 
+// SetFallbackHandler sets a fallback handler to be called when no model is found
+// If not set, the handler will simply return (pass through to next route)
+func (h *Handler) SetFallbackHandler(fallback FallbackHandler) {
+	h.fallbackHandler = fallback
+}
+
 // handlePanic is a helper function to handle panics with stack traces
 func (h *Handler) handlePanic(w common.ResponseWriter, method string, err interface{}) {
 	stack := debug.Stack()
@@ -73,8 +92,14 @@ func (h *Handler) Handle(w common.ResponseWriter, r common.Request, params map[s
 	// Get model and populate context with request-scoped data
 	model, err := h.registry.GetModelByEntity(schema, entity)
 	if err != nil {
-		logger.Error("Invalid entity: %v", err)
-		h.sendError(w, http.StatusBadRequest, "invalid_entity", "Invalid entity", err)
+		// Model not found - call fallback handler if set, otherwise pass through
+		logger.Debug("Model not found for %s.%s", schema, entity)
+		if h.fallbackHandler != nil {
+			logger.Debug("Calling fallback handler for %s.%s", schema, entity)
+			h.fallbackHandler(w, r, params)
+		} else {
+			logger.Debug("No fallback handler set, passing through to next route")
+		}
 		return
 	}
 
@@ -121,13 +146,25 @@ func (h *Handler) Handle(w common.ResponseWriter, r common.Request, params map[s
 			h.handleRead(ctx, w, "", options)
 		}
 	case "POST":
-		// Create operation
+		// Read request body
 		body, err := r.Body()
 		if err != nil {
 			logger.Error("Failed to read request body: %v", err)
 			h.sendError(w, http.StatusBadRequest, "invalid_request", "Failed to read request body", err)
 			return
 		}
+
+		// Try to detect if this is a meta operation request
+		var bodyMap map[string]interface{}
+		if err := json.Unmarshal(body, &bodyMap); err == nil {
+			if operation, ok := bodyMap["operation"].(string); ok && operation == "meta" {
+				logger.Info("Detected meta operation request for %s.%s", schema, entity)
+				h.handleMeta(ctx, w, schema, entity, model)
+				return
+			}
+		}
+
+		// Not a meta operation, proceed with normal create/update
 		var data interface{}
 		if err := json.Unmarshal(body, &data); err != nil {
 			logger.Error("Failed to decode request body: %v", err)
@@ -189,8 +226,14 @@ func (h *Handler) HandleGet(w common.ResponseWriter, r common.Request, params ma
 
 	model, err := h.registry.GetModelByEntity(schema, entity)
 	if err != nil {
-		logger.Error("Failed to get model: %v", err)
-		h.sendError(w, http.StatusBadRequest, "invalid_entity", "Invalid entity", err)
+		// Model not found - call fallback handler if set, otherwise pass through
+		logger.Debug("Model not found for %s.%s", schema, entity)
+		if h.fallbackHandler != nil {
+			logger.Debug("Calling fallback handler for %s.%s", schema, entity)
+			h.fallbackHandler(w, r, params)
+		} else {
+			logger.Debug("No fallback handler set, passing through to next route")
+		}
 		return
 	}
 
@@ -198,6 +241,21 @@ func (h *Handler) HandleGet(w common.ResponseWriter, r common.Request, params ma
 	h.sendResponse(w, metadata, nil)
 }
 
+// handleMeta processes meta operation requests
+func (h *Handler) handleMeta(ctx context.Context, w common.ResponseWriter, schema, entity string, model interface{}) {
+	// Capture panics and return error response
+	defer func() {
+		if err := recover(); err != nil {
+			h.handlePanic(w, "handleMeta", err)
+		}
+	}()
+
+	logger.Info("Getting metadata for %s.%s via meta operation", schema, entity)
+
+	metadata := h.generateMetadata(schema, entity, model)
+	h.sendResponse(w, metadata, nil)
+}
+
 // parseOptionsFromHeaders is now implemented in headers.go
 
 func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id string, options ExtendedRequestOptions) {
@@ -213,6 +271,10 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	tableName := GetTableName(ctx)
 	model := GetModel(ctx)
 
+	if id == "" {
+		options.SingleRecordAsObject = false
+	}
+
 	// Execute BeforeRead hooks
 	hookCtx := &HookContext{
 		Context:   ctx,
@@ -299,7 +361,10 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	// Apply column selection
 	if len(options.Columns) > 0 {
 		logger.Debug("Selecting columns: %v", options.Columns)
-		query = query.Column(options.Columns...)
+		for _, col := range options.Columns {
+			query = query.Column(reflection.ExtractSourceColumn(col))
+		}
+
 	}
 
 	// Apply expand (Just expand to Preload for now)
@@ -360,50 +425,8 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 			preload.Where = fixedWhere
 		}
 
-		query = query.PreloadRelation(preload.Relation, func(sq common.SelectQuery) common.SelectQuery {
-			if len(preload.OmitColumns) > 0 {
-				allCols := reflection.GetModelColumns(model)
-				// Remove omitted columns
-				preload.Columns = []string{}
-				for _, col := range allCols {
-					addCols := true
-					for _, omitCol := range preload.OmitColumns {
-						if col == omitCol {
-							addCols = false
-							break
-						}
-					}
-					if addCols {
-						preload.Columns = append(preload.Columns, col)
-					}
-				}
-			}
-
-			if len(preload.Columns) > 0 {
-				sq = sq.Column(preload.Columns...)
-			}
-
-			if len(preload.Filters) > 0 {
-				for _, filter := range preload.Filters {
-					sq = h.applyFilter(sq, filter, "", false, "AND")
-				}
-			}
-			if len(preload.Sort) > 0 {
-				for _, sort := range preload.Sort {
-					sq = sq.Order(fmt.Sprintf("%s %s", sort.Column, sort.Direction))
-				}
-			}
-
-			if len(preload.Where) > 0 {
-				sq = sq.Where(preload.Where)
-			}
-
-			if preload.Limit != nil && *preload.Limit > 0 {
-				sq = sq.Limit(*preload.Limit)
-			}
-
-			return sq
-		})
+		// Apply the preload with recursive support
+		query = h.applyPreloadWithRecursion(query, preload, model, 0)
 	}
 
 	// Apply DISTINCT if requested
@@ -433,13 +456,21 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	// Apply custom SQL WHERE clause (AND condition)
 	if options.CustomSQLWhere != "" {
 		logger.Debug("Applying custom SQL WHERE: %s", options.CustomSQLWhere)
-		query = query.Where(options.CustomSQLWhere)
+		// Sanitize without auto-prefixing since custom SQL may reference multiple tables
+		sanitizedWhere := common.SanitizeWhereClause(options.CustomSQLWhere, reflection.ExtractTableNameOnly(tableName))
+		if sanitizedWhere != "" {
+			query = query.Where(sanitizedWhere)
+		}
 	}
 
 	// Apply custom SQL WHERE clause (OR condition)
 	if options.CustomSQLOr != "" {
 		logger.Debug("Applying custom SQL OR: %s", options.CustomSQLOr)
-		query = query.WhereOr(options.CustomSQLOr)
+		// Sanitize without auto-prefixing since custom SQL may reference multiple tables
+		sanitizedOr := common.SanitizeWhereClause(options.CustomSQLOr, reflection.ExtractTableNameOnly(tableName))
+		if sanitizedOr != "" {
+			query = query.WhereOr(sanitizedOr)
+		}
 	}
 
 	// If ID is provided, filter by ID
@@ -463,14 +494,69 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	// Get total count before pagination (unless skip count is requested)
 	var total int
 	if !options.SkipCount {
-		count, err := query.Count(ctx)
-		if err != nil {
-			logger.Error("Error counting records: %v", err)
-			h.sendError(w, http.StatusInternalServerError, "query_error", "Error counting records", err)
-			return
+		// Try to get from cache first (unless SkipCache is true)
+		var cachedTotal *cache.CachedTotal
+		var cacheKey string
+
+		if !options.SkipCache {
+			// Build cache key from query parameters
+			// Convert expand options to interface slice for the cache key builder
+			expandOpts := make([]interface{}, len(options.Expand))
+			for i, exp := range options.Expand {
+				expandOpts[i] = map[string]interface{}{
+					"relation": exp.Relation,
+					"where":    exp.Where,
+				}
+			}
+
+			cacheKeyHash := cache.BuildExtendedQueryCacheKey(
+				tableName,
+				options.Filters,
+				options.Sort,
+				options.CustomSQLWhere,
+				options.CustomSQLOr,
+				expandOpts,
+				options.Distinct,
+				options.CursorForward,
+				options.CursorBackward,
+			)
+			cacheKey = cache.GetQueryTotalCacheKey(cacheKeyHash)
+
+			// Try to retrieve from cache
+			cachedTotal = &cache.CachedTotal{}
+			err := cache.GetDefaultCache().Get(ctx, cacheKey, cachedTotal)
+			if err == nil {
+				total = cachedTotal.Total
+				logger.Debug("Total records (from cache): %d", total)
+			} else {
+				logger.Debug("Cache miss for query total")
+				cachedTotal = nil
+			}
+		}
+
+		// If not in cache or cache skip, execute count query
+		if cachedTotal == nil {
+			count, err := query.Count(ctx)
+			if err != nil {
+				logger.Error("Error counting records: %v", err)
+				h.sendError(w, http.StatusInternalServerError, "query_error", "Error counting records", err)
+				return
+			}
+			total = count
+			logger.Debug("Total records (from query): %d", total)
+
+			// Store in cache (if caching is enabled)
+			if !options.SkipCache && cacheKey != "" {
+				cacheTTL := time.Minute * 2 // Default 2 minutes TTL
+				cacheData := &cache.CachedTotal{Total: total}
+				if err := cache.GetDefaultCache().Set(ctx, cacheKey, cacheData, cacheTTL); err != nil {
+					logger.Warn("Failed to cache query total: %v", err)
+					// Don't fail the request if caching fails
+				} else {
+					logger.Debug("Cached query total with key: %s", cacheKey)
+				}
+			}
 		}
-		total = count
-		logger.Debug("Total records: %d", total)
 	} else {
 		logger.Debug("Skipping count as requested")
 		total = -1 // Indicate count was skipped
@@ -515,7 +601,10 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 		// Apply cursor filter to query
 		if cursorFilter != "" {
 			logger.Debug("Applying cursor filter: %s", cursorFilter)
-			query = query.Where(cursorFilter)
+			sanitizedCursor := common.SanitizeWhereClause(cursorFilter, reflection.ExtractTableNameOnly(tableName))
+			if sanitizedCursor != "" {
+				query = query.Where(sanitizedCursor)
+			}
 		}
 	}
 
@@ -589,6 +678,142 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	h.sendFormattedResponse(w, modelPtr, metadata, options)
 }
 
+// applyPreloadWithRecursion applies a preload with support for ComputedQL and recursive preloading
+func (h *Handler) applyPreloadWithRecursion(query common.SelectQuery, preload common.PreloadOption, model interface{}, depth int) common.SelectQuery {
+	// Log relationship keys if they're specified (from XFiles)
+	if preload.RelatedKey != "" || preload.ForeignKey != "" || preload.PrimaryKey != "" {
+		logger.Debug("Preload %s has relationship keys - PK: %s, RelatedKey: %s, ForeignKey: %s",
+			preload.Relation, preload.PrimaryKey, preload.RelatedKey, preload.ForeignKey)
+
+		// Build a WHERE clause using the relationship keys if needed
+		// Note: Bun's PreloadRelation typically handles the relationship join automatically via struct tags
+		// However, if the relationship keys are explicitly provided from XFiles, we can use them
+		// to add additional filtering or validation
+		if preload.RelatedKey != "" && preload.Where == "" {
+			// For child tables: ensure the child's relatedkey column will be matched
+			// The actual parent value is dynamic and handled by Bun's preload mechanism
+			// We just log this for visibility
+			logger.Debug("Child table %s will be filtered by %s matching parent's primary key",
+				preload.Relation, preload.RelatedKey)
+		}
+		if preload.ForeignKey != "" && preload.Where == "" {
+			// For parent tables: ensure the parent's primary key matches the current table's foreign key
+			logger.Debug("Parent table %s will be filtered by primary key matching current table's %s",
+				preload.Relation, preload.ForeignKey)
+		}
+	}
+
+	// Apply the preload
+	query = query.PreloadRelation(preload.Relation, func(sq common.SelectQuery) common.SelectQuery {
+		// Get the related model for column operations
+		relatedModel := reflection.GetRelationModel(model, preload.Relation)
+		if relatedModel == nil {
+			logger.Warn("Could not get related model for preload: %s", preload.Relation)
+			// relatedModel = model // fallback to parent model
+		} else {
+
+			// If we have computed columns but no explicit columns, populate with all model columns first
+			// since computed columns are additions
+			if len(preload.Columns) == 0 && (len(preload.ComputedQL) > 0 || len(preload.OmitColumns) > 0) {
+				logger.Debug("Populating preload columns with all model columns since computed columns are additions")
+				preload.Columns = reflection.GetSQLModelColumns(relatedModel)
+			}
+
+			// Apply ComputedQL fields if any
+			if len(preload.ComputedQL) > 0 {
+				for colName, colExpr := range preload.ComputedQL {
+					logger.Debug("Applying computed column to preload %s: %s", preload.Relation, colName)
+					sq = sq.ColumnExpr(fmt.Sprintf("(%s) AS %s", colExpr, colName))
+					// Remove the computed column from selected columns to avoid duplication
+					for colIndex := range preload.Columns {
+						if preload.Columns[colIndex] == colName {
+							preload.Columns = append(preload.Columns[:colIndex], preload.Columns[colIndex+1:]...)
+							break
+						}
+					}
+				}
+			}
+
+			// Handle OmitColumns
+			if len(preload.OmitColumns) > 0 {
+				allCols := preload.Columns
+				// Remove omitted columns
+				preload.Columns = []string{}
+				for _, col := range allCols {
+					addCols := true
+					for _, omitCol := range preload.OmitColumns {
+						if col == omitCol {
+							addCols = false
+							break
+						}
+					}
+					if addCols {
+						preload.Columns = append(preload.Columns, col)
+					}
+				}
+			}
+
+			// Apply column selection
+			if len(preload.Columns) > 0 {
+				sq = sq.Column(preload.Columns...)
+			}
+		}
+
+		// Apply filters
+		if len(preload.Filters) > 0 {
+			for _, filter := range preload.Filters {
+				sq = h.applyFilter(sq, filter, "", false, "AND")
+			}
+		}
+
+		// Apply sorting
+		if len(preload.Sort) > 0 {
+			for _, sort := range preload.Sort {
+				sq = sq.Order(fmt.Sprintf("%s %s", sort.Column, sort.Direction))
+			}
+		}
+
+		// Apply WHERE clause
+		if len(preload.Where) > 0 {
+			sanitizedWhere := common.SanitizeWhereClause(preload.Where, reflection.ExtractTableNameOnly(preload.Relation))
+			if len(sanitizedWhere) > 0 {
+				sq = sq.Where(sanitizedWhere)
+			}
+		}
+
+		// Apply limit
+		if preload.Limit != nil && *preload.Limit > 0 {
+			sq = sq.Limit(*preload.Limit)
+		}
+
+		if preload.Offset != nil && *preload.Offset > 0 {
+			sq = sq.Offset(*preload.Offset)
+		}
+
+		return sq
+	})
+
+	// Handle recursive preloading
+	if preload.Recursive && depth < 5 {
+		logger.Debug("Applying recursive preload for %s at depth %d", preload.Relation, depth+1)
+
+		// For recursive relationships, we need to get the last part of the relation path
+		// e.g., "MastertaskItems" -> "MastertaskItems.MastertaskItems"
+		relationParts := strings.Split(preload.Relation, ".")
+		lastRelationName := relationParts[len(relationParts)-1]
+
+		// Create a recursive preload with the same configuration
+		// but with the relation path extended
+		recursivePreload := preload
+		recursivePreload.Relation = preload.Relation + "." + lastRelationName
+
+		// Recursively apply preload until we reach depth 5
+		query = h.applyPreloadWithRecursion(query, recursivePreload, model, depth+1)
+	}
+
+	return query
+}
+
 func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, data interface{}, options ExtendedRequestOptions) {
 	// Capture panics and return error response
 	defer func() {
@@ -1249,7 +1474,7 @@ func (h *Handler) normalizeToSlice(data interface{}) []interface{} {
 func (h *Handler) extractNestedRelations(
 	data map[string]interface{},
 	model interface{},
-) (map[string]interface{}, map[string]interface{}, error) {
+) (_cleanedData map[string]interface{}, _relations map[string]interface{}, _err error) {
 	// Get model type for reflection
 	modelType := reflect.TypeOf(model)
 	for modelType != nil && (modelType.Kind() == reflect.Ptr || modelType.Kind() == reflect.Slice || modelType.Kind() == reflect.Array) {
@@ -1678,7 +1903,7 @@ func (h *Handler) sendResponseWithOptions(w common.ResponseWriter, data interfac
 // Returns the single element if data is a slice/array with exactly one element, otherwise returns data unchanged
 func (h *Handler) normalizeResultArray(data interface{}) interface{} {
 	if data == nil {
-		return data
+		return nil
 	}
 
 	// Use reflection to check if data is a slice or array

pkg/restheadspec/headers.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/bitechdev/ResolveSpec/pkg/common"
 	"github.com/bitechdev/ResolveSpec/pkg/logger"
+	"github.com/bitechdev/ResolveSpec/pkg/reflection"
 )
 
 // ExtendedRequestOptions extends common.RequestOptions with additional features
@@ -110,8 +111,8 @@ func (h *Handler) parseOptionsFromHeaders(r common.Request, model interface{}) E
 		AdvancedSQL:          make(map[string]string),
 		ComputedQL:           make(map[string]string),
 		Expand:               make([]ExpandOption, 0),
-		ResponseFormat:       "simple",           // Default response format
-		SingleRecordAsObject: true,               // Default: normalize single-element arrays to objects
+		ResponseFormat:       "simple", // Default response format
+		SingleRecordAsObject: true,     // Default: normalize single-element arrays to objects
 	}
 
 	// Get all headers
@@ -122,106 +123,137 @@ func (h *Handler) parseOptionsFromHeaders(r common.Request, model interface{}) E
 
 	// Merge headers and query parameters - query parameters take precedence
 	// This allows the same parameters to be specified in either headers or query string
+	// Normalize keys to lowercase to ensure query params properly override headers
 	combinedParams := make(map[string]string)
 	for key, value := range headers {
-		combinedParams[key] = value
+		combinedParams[strings.ToLower(key)] = value
 	}
 	for key, value := range queryParams {
-		combinedParams[key] = value
+		combinedParams[strings.ToLower(key)] = value
 	}
 
 	// Process each parameter (from both headers and query params)
+	// Note: keys are already normalized to lowercase in combinedParams
 	for key, value := range combinedParams {
-		// Normalize parameter key to lowercase for consistent matching
-		normalizedKey := strings.ToLower(key)
-
 		// Decode value if it's base64 encoded
 		decodedValue := decodeHeaderValue(value)
 
 		// Parse based on parameter prefix/name
 		switch {
 		// Field Selection
-		case strings.HasPrefix(normalizedKey, "x-select-fields"):
+		case strings.HasPrefix(key, "x-select-fields"):
 			h.parseSelectFields(&options, decodedValue)
-		case strings.HasPrefix(normalizedKey, "x-not-select-fields"):
+		case strings.HasPrefix(key, "x-not-select-fields"):
 			h.parseNotSelectFields(&options, decodedValue)
-		case strings.HasPrefix(normalizedKey, "x-clean-json"):
+		case strings.HasPrefix(key, "x-clean-json"):
 			options.CleanJSON = strings.EqualFold(decodedValue, "true")
 
 		// Filtering & Search
-		case strings.HasPrefix(normalizedKey, "x-fieldfilter-"):
-			h.parseFieldFilter(&options, normalizedKey, decodedValue)
-		case strings.HasPrefix(normalizedKey, "x-searchfilter-"):
-			h.parseSearchFilter(&options, normalizedKey, decodedValue)
-		case strings.HasPrefix(normalizedKey, "x-searchop-"):
-			h.parseSearchOp(&options, normalizedKey, decodedValue, "AND")
-		case strings.HasPrefix(normalizedKey, "x-searchor-"):
-			h.parseSearchOp(&options, normalizedKey, decodedValue, "OR")
-		case strings.HasPrefix(normalizedKey, "x-searchand-"):
-			h.parseSearchOp(&options, normalizedKey, decodedValue, "AND")
-		case strings.HasPrefix(normalizedKey, "x-searchcols"):
+		case strings.HasPrefix(key, "x-fieldfilter-"):
+			h.parseFieldFilter(&options, key, decodedValue)
+		case strings.HasPrefix(key, "x-searchfilter-"):
+			h.parseSearchFilter(&options, key, decodedValue)
+		case strings.HasPrefix(key, "x-searchop-"):
+			h.parseSearchOp(&options, key, decodedValue, "AND")
+		case strings.HasPrefix(key, "x-searchor-"):
+			h.parseSearchOp(&options, key, decodedValue, "OR")
+		case strings.HasPrefix(key, "x-searchand-"):
+			h.parseSearchOp(&options, key, decodedValue, "AND")
+		case strings.HasPrefix(key, "x-searchcols"):
 			options.SearchColumns = h.parseCommaSeparated(decodedValue)
-		case strings.HasPrefix(normalizedKey, "x-custom-sql-w"):
-			options.CustomSQLWhere = decodedValue
-		case strings.HasPrefix(normalizedKey, "x-custom-sql-or"):
-			options.CustomSQLOr = decodedValue
+		case strings.HasPrefix(key, "x-custom-sql-w"):
+			if options.CustomSQLWhere != "" {
+				options.CustomSQLWhere = fmt.Sprintf("%s AND (%s)", options.CustomSQLWhere, decodedValue)
+			} else {
+				options.CustomSQLWhere = decodedValue
+			}
+		case strings.HasPrefix(key, "x-custom-sql-or"):
+			if options.CustomSQLOr != "" {
+				options.CustomSQLOr = fmt.Sprintf("%s OR (%s)", options.CustomSQLOr, decodedValue)
+			} else {
+				options.CustomSQLOr = decodedValue
+			}
 
 		// Joins & Relations
-		case strings.HasPrefix(normalizedKey, "x-preload"):
-			if strings.HasSuffix(normalizedKey, "-where") {
+		case strings.HasPrefix(key, "x-preload"):
+			if strings.HasSuffix(key, "-where") {
 				continue
 			}
 			whereClaude := combinedParams[fmt.Sprintf("%s-where", key)]
 			h.parsePreload(&options, decodedValue, decodeHeaderValue(whereClaude))
 
-		case strings.HasPrefix(normalizedKey, "x-expand"):
+		case strings.HasPrefix(key, "x-expand"):
 			h.parseExpand(&options, decodedValue)
-		case strings.HasPrefix(normalizedKey, "x-custom-sql-join"):
+		case strings.HasPrefix(key, "x-custom-sql-join"):
 			// TODO: Implement custom SQL join
 			logger.Debug("Custom SQL join not yet implemented: %s", decodedValue)
 
 		// Sorting & Pagination
-		case strings.HasPrefix(normalizedKey, "x-sort"):
+		case strings.HasPrefix(key, "x-sort"):
 			h.parseSorting(&options, decodedValue)
-		case strings.HasPrefix(normalizedKey, "x-limit"):
+		// Special cases for older clients using sort(a,b,-c) syntax
+		case strings.HasPrefix(key, "sort(") && strings.Contains(key, ")"):
+			sortValue := key[strings.Index(key, "(")+1 : strings.Index(key, ")")]
+			h.parseSorting(&options, sortValue)
+		case strings.HasPrefix(key, "x-limit"):
 			if limit, err := strconv.Atoi(decodedValue); err == nil {
 				options.Limit = &limit
 			}
-		case strings.HasPrefix(normalizedKey, "x-offset"):
+		// Special cases for older clients using limit(n) syntax
+		case strings.HasPrefix(key, "limit(") && strings.Contains(key, ")"):
+			limitValue := key[strings.Index(key, "(")+1 : strings.Index(key, ")")]
+			limitValueParts := strings.Split(limitValue, ",")
+
+			if len(limitValueParts) > 1 {
+				if offset, err := strconv.Atoi(limitValueParts[0]); err == nil {
+					options.Offset = &offset
+				}
+				if limit, err := strconv.Atoi(limitValueParts[1]); err == nil {
+					options.Limit = &limit
+				}
+			} else {
+				if limit, err := strconv.Atoi(limitValueParts[0]); err == nil {
+					options.Limit = &limit
+				}
+			}
+
+		case strings.HasPrefix(key, "x-offset"):
 			if offset, err := strconv.Atoi(decodedValue); err == nil {
 				options.Offset = &offset
 			}
-		case strings.HasPrefix(normalizedKey, "x-cursor-forward"):
+
+		case strings.HasPrefix(key, "x-cursor-forward"):
 			options.CursorForward = decodedValue
-		case strings.HasPrefix(normalizedKey, "x-cursor-backward"):
+		case strings.HasPrefix(key, "x-cursor-backward"):
 			options.CursorBackward = decodedValue
 
 		// Advanced Features
-		case strings.HasPrefix(normalizedKey, "x-advsql-"):
-			colName := strings.TrimPrefix(normalizedKey, "x-advsql-")
+		case strings.HasPrefix(key, "x-advsql-"):
+			colName := strings.TrimPrefix(key, "x-advsql-")
 			options.AdvancedSQL[colName] = decodedValue
-		case strings.HasPrefix(normalizedKey, "x-cql-sel-"):
-			colName := strings.TrimPrefix(normalizedKey, "x-cql-sel-")
+		case strings.HasPrefix(key, "x-cql-sel-"):
+			colName := strings.TrimPrefix(key, "x-cql-sel-")
 			options.ComputedQL[colName] = decodedValue
-		case strings.HasPrefix(normalizedKey, "x-distinct"):
+
+		case strings.HasPrefix(key, "x-distinct"):
 			options.Distinct = strings.EqualFold(decodedValue, "true")
-		case strings.HasPrefix(normalizedKey, "x-skipcount"):
+		case strings.HasPrefix(key, "x-skipcount"):
 			options.SkipCount = strings.EqualFold(decodedValue, "true")
-		case strings.HasPrefix(normalizedKey, "x-skipcache"):
+		case strings.HasPrefix(key, "x-skipcache"):
 			options.SkipCache = strings.EqualFold(decodedValue, "true")
-		case strings.HasPrefix(normalizedKey, "x-fetch-rownumber"):
+		case strings.HasPrefix(key, "x-fetch-rownumber"):
 			options.FetchRowNumber = &decodedValue
-		case strings.HasPrefix(normalizedKey, "x-pkrow"):
+		case strings.HasPrefix(key, "x-pkrow"):
 			options.PKRow = &decodedValue
 
 		// Response Format
-		case strings.HasPrefix(normalizedKey, "x-simpleapi"):
+		case strings.HasPrefix(key, "x-simpleapi"):
 			options.ResponseFormat = "simple"
-		case strings.HasPrefix(normalizedKey, "x-detailapi"):
+		case strings.HasPrefix(key, "x-detailapi"):
 			options.ResponseFormat = "detail"
-		case strings.HasPrefix(normalizedKey, "x-syncfusion"):
+		case strings.HasPrefix(key, "x-syncfusion"):
 			options.ResponseFormat = "syncfusion"
-		case strings.HasPrefix(normalizedKey, "x-single-record-as-object"):
+		case strings.HasPrefix(key, "x-single-record-as-object"):
 			// Parse as boolean - "false" disables, "true" enables (default is true)
 			if strings.EqualFold(decodedValue, "false") {
 				options.SingleRecordAsObject = false
@@ -230,11 +262,11 @@ func (h *Handler) parseOptionsFromHeaders(r common.Request, model interface{}) E
 			}
 
 		// Transaction Control
-		case strings.HasPrefix(normalizedKey, "x-transaction-atomic"):
+		case strings.HasPrefix(key, "x-transaction-atomic"):
 			options.AtomicTransaction = strings.EqualFold(decodedValue, "true")
 
 		// X-Files - comprehensive JSON configuration
-		case strings.HasPrefix(normalizedKey, "x-files"):
+		case strings.HasPrefix(key, "x-files"):
 			h.parseXFiles(&options, decodedValue)
 		}
 	}
@@ -244,6 +276,12 @@ func (h *Handler) parseOptionsFromHeaders(r common.Request, model interface{}) E
 		h.resolveRelationNamesInOptions(&options, model)
 	}
 
+	// Always sort according to the primary key if no sorting is specified
+	if len(options.Sort) == 0 {
+		pkName := reflection.GetPrimaryKeyName(model)
+		options.Sort = []common.SortOption{{Column: pkName, Direction: "ASC"}}
+	}
+
 	return options
 }
 
@@ -697,7 +735,7 @@ func (h *Handler) resolveRelationNamesInOptions(options *ExtendedRequestOptions,
 
 			// Try to get the model type for the next level
 			// This allows nested resolution
-			if nextModel := h.getRelationModel(currentModel, resolvedPart); nextModel != nil {
+			if nextModel := reflection.GetRelationModel(currentModel, resolvedPart); nextModel != nil {
 				currentModel = nextModel
 			}
 		}
@@ -721,58 +759,6 @@ func (h *Handler) resolveRelationNamesInOptions(options *ExtendedRequestOptions,
 	}
 }
 
-// getRelationModel gets the model type for a relation field
-func (h *Handler) getRelationModel(model interface{}, fieldName string) interface{} {
-	if model == nil || fieldName == "" {
-		return nil
-	}
-
-	modelType := reflect.TypeOf(model)
-	if modelType == nil {
-		return nil
-	}
-
-	if modelType.Kind() == reflect.Ptr {
-		modelType = modelType.Elem()
-	}
-
-	if modelType == nil || modelType.Kind() != reflect.Struct {
-		return nil
-	}
-
-	// Find the field
-	field, found := modelType.FieldByName(fieldName)
-	if !found {
-		return nil
-	}
-
-	// Get the target type
-	targetType := field.Type
-	if targetType == nil {
-		return nil
-	}
-
-	if targetType.Kind() == reflect.Slice {
-		targetType = targetType.Elem()
-		if targetType == nil {
-			return nil
-		}
-	}
-	if targetType.Kind() == reflect.Ptr {
-		targetType = targetType.Elem()
-		if targetType == nil {
-			return nil
-		}
-	}
-
-	if targetType.Kind() != reflect.Struct {
-		return nil
-	}
-
-	// Create a zero value of the target type
-	return reflect.New(targetType).Elem().Interface()
-}
-
 // resolveRelationName resolves a relation name or table name to the actual field name in the model
 // If the input is already a field name, it returns it as-is
 // If the input is a table name, it looks up the corresponding relation field
@@ -806,7 +792,7 @@ func (h *Handler) resolveRelationName(model interface{}, nameOrTable string) str
 		field := modelType.Field(i)
 		if field.Name == nameOrTable {
 			// It's already a field name
-			logger.Debug("Input '%s' is a field name", nameOrTable)
+			// logger.Debug("Input '%s' is a field name", nameOrTable)
 			return nameOrTable
 		}
 	}
@@ -935,6 +921,33 @@ func (h *Handler) addXFilesPreload(xfile *XFiles, options *ExtendedRequestOption
 		}
 	}
 
+	// Add computed columns (CQL) -> ComputedQL
+	if len(xfile.CQLColumns) > 0 {
+		preloadOpt.ComputedQL = make(map[string]string)
+		for i, cqlExpr := range xfile.CQLColumns {
+			colName := fmt.Sprintf("cql%d", i+1)
+			preloadOpt.ComputedQL[colName] = cqlExpr
+			logger.Debug("X-Files: Added computed column %s to preload %s: %s", colName, relationPath, cqlExpr)
+		}
+	}
+
+	// Set recursive flag
+	preloadOpt.Recursive = xfile.Recursive
+
+	// Extract relationship keys for proper foreign key filtering
+	if xfile.PrimaryKey != "" {
+		preloadOpt.PrimaryKey = xfile.PrimaryKey
+		logger.Debug("X-Files: Set primary key for %s: %s", relationPath, xfile.PrimaryKey)
+	}
+	if xfile.RelatedKey != "" {
+		preloadOpt.RelatedKey = xfile.RelatedKey
+		logger.Debug("X-Files: Set related key for %s: %s", relationPath, xfile.RelatedKey)
+	}
+	if xfile.ForeignKey != "" {
+		preloadOpt.ForeignKey = xfile.ForeignKey
+		logger.Debug("X-Files: Set foreign key for %s: %s", relationPath, xfile.ForeignKey)
+	}
+
 	// Add the preload option
 	options.Preload = append(options.Preload, preloadOpt)
 
@@ -947,192 +960,6 @@ func (h *Handler) addXFilesPreload(xfile *XFiles, options *ExtendedRequestOption
 	}
 }
 
-// extractSourceColumn extracts the base column name from PostgreSQL JSON operators
-// Examples:
-//   - "columna->>'val'" returns "columna"
-//   - "columna->'key'" returns "columna"
-//   - "columna" returns "columna"
-//   - "table.columna->>'val'" returns "table.columna"
-func extractSourceColumn(colName string) string {
-	// Check for PostgreSQL JSON operators: -> and ->>
-	if idx := strings.Index(colName, "->>"); idx != -1 {
-		return strings.TrimSpace(colName[:idx])
-	}
-	if idx := strings.Index(colName, "->"); idx != -1 {
-		return strings.TrimSpace(colName[:idx])
-	}
-	return colName
-}
-
-// getColumnTypeFromModel uses reflection to determine the Go type of a column in a model
-func (h *Handler) getColumnTypeFromModel(model interface{}, colName string) reflect.Kind {
-	if model == nil {
-		return reflect.Invalid
-	}
-
-	// Extract the source column name (remove JSON operators like ->> or ->)
-	sourceColName := extractSourceColumn(colName)
-
-	modelType := reflect.TypeOf(model)
-	// Dereference pointer if needed
-	if modelType.Kind() == reflect.Ptr {
-		modelType = modelType.Elem()
-	}
-
-	// Ensure it's a struct
-	if modelType.Kind() != reflect.Struct {
-		return reflect.Invalid
-	}
-
-	// Find the field by JSON tag or field name
-	for i := 0; i < modelType.NumField(); i++ {
-		field := modelType.Field(i)
-
-		// Check JSON tag
-		jsonTag := field.Tag.Get("json")
-		if jsonTag != "" {
-			// Parse JSON tag (format: "name,omitempty")
-			parts := strings.Split(jsonTag, ",")
-			if parts[0] == sourceColName {
-				return field.Type.Kind()
-			}
-		}
-
-		// Check field name (case-insensitive)
-		if strings.EqualFold(field.Name, sourceColName) {
-			return field.Type.Kind()
-		}
-
-		// Check snake_case conversion
-		snakeCaseName := toSnakeCase(field.Name)
-		if snakeCaseName == sourceColName {
-			return field.Type.Kind()
-		}
-	}
-
-	return reflect.Invalid
-}
-
-// toSnakeCase converts a string from CamelCase to snake_case
-func toSnakeCase(s string) string {
-	var result strings.Builder
-	for i, r := range s {
-		if i > 0 && r >= 'A' && r <= 'Z' {
-			result.WriteRune('_')
-		}
-		result.WriteRune(r)
-	}
-	return strings.ToLower(result.String())
-}
-
-// isNumericType checks if a reflect.Kind is a numeric type
-func isNumericType(kind reflect.Kind) bool {
-	return kind == reflect.Int || kind == reflect.Int8 || kind == reflect.Int16 ||
-		kind == reflect.Int32 || kind == reflect.Int64 || kind == reflect.Uint ||
-		kind == reflect.Uint8 || kind == reflect.Uint16 || kind == reflect.Uint32 ||
-		kind == reflect.Uint64 || kind == reflect.Float32 || kind == reflect.Float64
-}
-
-// isStringType checks if a reflect.Kind is a string type
-func isStringType(kind reflect.Kind) bool {
-	return kind == reflect.String
-}
-
-// convertToNumericType converts a string value to the appropriate numeric type
-func convertToNumericType(value string, kind reflect.Kind) (interface{}, error) {
-	value = strings.TrimSpace(value)
-
-	switch kind {
-	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		// Parse as integer
-		bitSize := 64
-		switch kind {
-		case reflect.Int8:
-			bitSize = 8
-		case reflect.Int16:
-			bitSize = 16
-		case reflect.Int32:
-			bitSize = 32
-		}
-
-		intVal, err := strconv.ParseInt(value, 10, bitSize)
-		if err != nil {
-			return nil, fmt.Errorf("invalid integer value: %w", err)
-		}
-
-		// Return the appropriate type
-		switch kind {
-		case reflect.Int:
-			return int(intVal), nil
-		case reflect.Int8:
-			return int8(intVal), nil
-		case reflect.Int16:
-			return int16(intVal), nil
-		case reflect.Int32:
-			return int32(intVal), nil
-		case reflect.Int64:
-			return intVal, nil
-		}
-
-	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
-		// Parse as unsigned integer
-		bitSize := 64
-		switch kind {
-		case reflect.Uint8:
-			bitSize = 8
-		case reflect.Uint16:
-			bitSize = 16
-		case reflect.Uint32:
-			bitSize = 32
-		}
-
-		uintVal, err := strconv.ParseUint(value, 10, bitSize)
-		if err != nil {
-			return nil, fmt.Errorf("invalid unsigned integer value: %w", err)
-		}
-
-		// Return the appropriate type
-		switch kind {
-		case reflect.Uint:
-			return uint(uintVal), nil
-		case reflect.Uint8:
-			return uint8(uintVal), nil
-		case reflect.Uint16:
-			return uint16(uintVal), nil
-		case reflect.Uint32:
-			return uint32(uintVal), nil
-		case reflect.Uint64:
-			return uintVal, nil
-		}
-
-	case reflect.Float32, reflect.Float64:
-		// Parse as float
-		bitSize := 64
-		if kind == reflect.Float32 {
-			bitSize = 32
-		}
-
-		floatVal, err := strconv.ParseFloat(value, bitSize)
-		if err != nil {
-			return nil, fmt.Errorf("invalid float value: %w", err)
-		}
-
-		if kind == reflect.Float32 {
-			return float32(floatVal), nil
-		}
-		return floatVal, nil
-	}
-
-	return nil, fmt.Errorf("unsupported numeric type: %v", kind)
-}
-
-// isNumericValue checks if a string value can be parsed as a number
-func isNumericValue(value string) bool {
-	value = strings.TrimSpace(value)
-	_, err := strconv.ParseFloat(value, 64)
-	return err == nil
-}
-
 // ColumnCastInfo holds information about whether a column needs casting
 type ColumnCastInfo struct {
 	NeedsCast     bool
@@ -1146,7 +973,7 @@ func (h *Handler) ValidateAndAdjustFilterForColumnType(filter *common.FilterOpti
 		return ColumnCastInfo{NeedsCast: false, IsNumericType: false}
 	}
 
-	colType := h.getColumnTypeFromModel(model, filter.Column)
+	colType := reflection.GetColumnTypeFromModel(model, filter.Column)
 	if colType == reflect.Invalid {
 		// Column not found in model, no casting needed
 		logger.Debug("Column %s not found in model, skipping type validation", filter.Column)
@@ -1157,18 +984,18 @@ func (h *Handler) ValidateAndAdjustFilterForColumnType(filter *common.FilterOpti
 	valueIsNumeric := false
 	if strVal, ok := filter.Value.(string); ok {
 		strVal = strings.Trim(strVal, "%")
-		valueIsNumeric = isNumericValue(strVal)
+		valueIsNumeric = reflection.IsNumericValue(strVal)
 	}
 
 	// Adjust based on column type
 	switch {
-	case isNumericType(colType):
+	case reflection.IsNumericType(colType):
 		// Column is numeric
 		if valueIsNumeric {
 			// Value is numeric - try to convert it
 			if strVal, ok := filter.Value.(string); ok {
 				strVal = strings.Trim(strVal, "%")
-				numericVal, err := convertToNumericType(strVal, colType)
+				numericVal, err := reflection.ConvertToNumericType(strVal, colType)
 				if err != nil {
 					logger.Debug("Failed to convert value '%s' to numeric type for column %s, will use text cast", strVal, filter.Column)
 					return ColumnCastInfo{NeedsCast: true, IsNumericType: true}
@@ -1183,7 +1010,7 @@ func (h *Handler) ValidateAndAdjustFilterForColumnType(filter *common.FilterOpti
 			return ColumnCastInfo{NeedsCast: true, IsNumericType: true}
 		}
 
-	case isStringType(colType):
+	case reflection.IsStringType(colType):
 		// String columns don't need casting
 		return ColumnCastInfo{NeedsCast: false, IsNumericType: false}
 

pkg/restheadspec/query_params_test.go

@@ -1,6 +1,7 @@
 package restheadspec
 
 import (
+	"net/http"
 	"testing"
 )
 
@@ -42,6 +43,12 @@ func (m *MockRequest) AllQueryParams() map[string]string {
 	return m.queryParams
 }
 
+func (m *MockRequest) UnderlyingRequest() *http.Request {
+	// For testing purposes, return nil
+	// In real scenarios, you might want to construct a proper http.Request
+	return nil
+}
+
 func TestParseOptionsFromQueryParams(t *testing.T) {
 	handler := NewHandler(nil, nil)
 

pkg/restheadspec/restheadspec.go

@@ -54,12 +54,14 @@ package restheadspec
 
 import (
 	"net/http"
+	"strings"
 
 	"github.com/gorilla/mux"
 	"github.com/uptrace/bun"
 	"github.com/uptrace/bunrouter"
 	"gorm.io/gorm"
 
+	"github.com/bitechdev/ResolveSpec/pkg/common"
 	"github.com/bitechdev/ResolveSpec/pkg/common/adapters/database"
 	"github.com/bitechdev/ResolveSpec/pkg/common/adapters/router"
 	"github.com/bitechdev/ResolveSpec/pkg/logger"
@@ -90,31 +92,130 @@ func NewStandardBunRouter() *router.StandardBunRouterAdapter {
 	return router.NewStandardBunRouterAdapter()
 }
 
+// MiddlewareFunc is a function that wraps an http.Handler with additional functionality
+type MiddlewareFunc func(http.Handler) http.Handler
+
 // SetupMuxRoutes sets up routes for the RestHeadSpec API with Mux
-func SetupMuxRoutes(muxRouter *mux.Router, handler *Handler) {
-	// GET, POST, PUT, PATCH, DELETE for /{schema}/{entity}
-	muxRouter.HandleFunc("/{schema}/{entity}", func(w http.ResponseWriter, r *http.Request) {
-		vars := mux.Vars(r)
-		reqAdapter := router.NewHTTPRequest(r)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, vars)
-	}).Methods("GET", "POST")
+// authMiddleware is optional - if provided, routes will be protected with the middleware
+// Example: SetupMuxRoutes(router, handler, func(h http.Handler) http.Handler { return security.NewAuthHandler(securityList, h) })
+func SetupMuxRoutes(muxRouter *mux.Router, handler *Handler, authMiddleware MiddlewareFunc) {
+	// Get all registered models from the registry
+	allModels := handler.registry.GetAllModels()
 
-	// GET, PUT, PATCH, DELETE for /{schema}/{entity}/{id}
-	muxRouter.HandleFunc("/{schema}/{entity}/{id}", func(w http.ResponseWriter, r *http.Request) {
-		vars := mux.Vars(r)
-		reqAdapter := router.NewHTTPRequest(r)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, vars)
-	}).Methods("GET", "PUT", "PATCH", "DELETE", "POST")
+	// Loop through each registered model and create explicit routes
+	for fullName := range allModels {
+		// Parse the full name (e.g., "public.users" or just "users")
+		schema, entity := parseModelName(fullName)
 
-	// GET for metadata (using HandleGet)
-	muxRouter.HandleFunc("/{schema}/{entity}/metadata", func(w http.ResponseWriter, r *http.Request) {
-		vars := mux.Vars(r)
-		reqAdapter := router.NewHTTPRequest(r)
+		// Build the route paths
+		entityPath := buildRoutePath(schema, entity)
+		entityWithIDPath := buildRoutePath(schema, entity) + "/{id}"
+		metadataPath := buildRoutePath(schema, entity) + "/metadata"
+
+		// Create handler functions for this specific entity
+		entityHandler := createMuxHandler(handler, schema, entity, "")
+		entityWithIDHandler := createMuxHandler(handler, schema, entity, "id")
+		metadataHandler := createMuxGetHandler(handler, schema, entity, "")
+		optionsEntityHandler := createMuxOptionsHandler(handler, schema, entity, []string{"GET", "POST", "OPTIONS"})
+		optionsEntityWithIDHandler := createMuxOptionsHandler(handler, schema, entity, []string{"GET", "PUT", "PATCH", "DELETE", "POST", "OPTIONS"})
+
+		// Apply authentication middleware if provided
+		if authMiddleware != nil {
+			entityHandler = authMiddleware(entityHandler).(http.HandlerFunc)
+			entityWithIDHandler = authMiddleware(entityWithIDHandler).(http.HandlerFunc)
+			metadataHandler = authMiddleware(metadataHandler).(http.HandlerFunc)
+			// Don't apply auth middleware to OPTIONS - CORS preflight must not require auth
+		}
+
+		// Register routes for this entity
+		// GET, POST for /{schema}/{entity}
+		muxRouter.Handle(entityPath, entityHandler).Methods("GET", "POST")
+
+		// GET, PUT, PATCH, DELETE, POST for /{schema}/{entity}/{id}
+		muxRouter.Handle(entityWithIDPath, entityWithIDHandler).Methods("GET", "PUT", "PATCH", "DELETE", "POST")
+
+		// GET for metadata (using HandleGet)
+		muxRouter.Handle(metadataPath, metadataHandler).Methods("GET")
+
+		// OPTIONS for CORS preflight - returns metadata
+		muxRouter.Handle(entityPath, optionsEntityHandler).Methods("OPTIONS")
+		muxRouter.Handle(entityWithIDPath, optionsEntityWithIDHandler).Methods("OPTIONS")
+	}
+}
+
+// Helper function to create Mux handler for a specific entity with CORS support
+func createMuxHandler(handler *Handler, schema, entity, idParam string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Set CORS headers
+		corsConfig := common.DefaultCORSConfig()
 		respAdapter := router.NewHTTPResponseWriter(w)
+		common.SetCORSHeaders(respAdapter, corsConfig)
+
+		vars := make(map[string]string)
+		vars["schema"] = schema
+		vars["entity"] = entity
+		if idParam != "" {
+			vars["id"] = mux.Vars(r)[idParam]
+		}
+		reqAdapter := router.NewHTTPRequest(r)
+		handler.Handle(respAdapter, reqAdapter, vars)
+	}
+}
+
+// Helper function to create Mux GET handler for a specific entity with CORS support
+func createMuxGetHandler(handler *Handler, schema, entity, idParam string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Set CORS headers
+		corsConfig := common.DefaultCORSConfig()
+		respAdapter := router.NewHTTPResponseWriter(w)
+		common.SetCORSHeaders(respAdapter, corsConfig)
+
+		vars := make(map[string]string)
+		vars["schema"] = schema
+		vars["entity"] = entity
+		if idParam != "" {
+			vars["id"] = mux.Vars(r)[idParam]
+		}
+		reqAdapter := router.NewHTTPRequest(r)
 		handler.HandleGet(respAdapter, reqAdapter, vars)
-	}).Methods("GET")
+	}
+}
+
+// Helper function to create Mux OPTIONS handler that returns metadata
+func createMuxOptionsHandler(handler *Handler, schema, entity string, allowedMethods []string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Set CORS headers with the allowed methods for this route
+		corsConfig := common.DefaultCORSConfig()
+		corsConfig.AllowedMethods = allowedMethods
+		respAdapter := router.NewHTTPResponseWriter(w)
+		common.SetCORSHeaders(respAdapter, corsConfig)
+
+		// Return metadata in the OPTIONS response body
+		vars := make(map[string]string)
+		vars["schema"] = schema
+		vars["entity"] = entity
+		reqAdapter := router.NewHTTPRequest(r)
+		handler.HandleGet(respAdapter, reqAdapter, vars)
+	}
+}
+
+// parseModelName parses a model name like "public.users" into schema and entity
+// If no schema is present, returns empty string for schema
+func parseModelName(fullName string) (schema, entity string) {
+	parts := strings.Split(fullName, ".")
+	if len(parts) == 2 {
+		return parts[0], parts[1]
+	}
+	return "", fullName
+}
+
+// buildRoutePath builds a route path from schema and entity
+// If schema is empty, returns just "/entity", otherwise "/{schema}/{entity}"
+func buildRoutePath(schema, entity string) string {
+	if schema == "" {
+		return "/" + entity
+	}
+	return "/" + schema + "/" + entity
 }
 
 // Example usage functions for documentation:
@@ -124,12 +225,20 @@ func ExampleWithGORM(db *gorm.DB) {
 	// Create handler using GORM
 	handler := NewHandlerWithGORM(db)
 
-	// Setup router
+	// Setup router without authentication
 	muxRouter := mux.NewRouter()
-	SetupMuxRoutes(muxRouter, handler)
+	SetupMuxRoutes(muxRouter, handler, nil)
 
 	// Register models
 	// handler.registry.RegisterModel("public.users", &User{})
+
+	// To add authentication, pass a middleware function:
+	// import "github.com/bitechdev/ResolveSpec/pkg/security"
+	// secList := security.NewSecurityList(myProvider)
+	// authMiddleware := func(h http.Handler) http.Handler {
+	//     return security.NewAuthHandler(secList, h)
+	// }
+	// SetupMuxRoutes(muxRouter, handler, authMiddleware)
 }
 
 // ExampleWithBun shows how to switch to Bun ORM
@@ -144,110 +253,169 @@ func ExampleWithBun(bunDB *bun.DB) {
 	// Create handler
 	handler := NewHandler(dbAdapter, registry)
 
-	// Setup routes
+	// Setup routes without authentication
 	muxRouter := mux.NewRouter()
-	SetupMuxRoutes(muxRouter, handler)
+	SetupMuxRoutes(muxRouter, handler, nil)
 }
 
 // SetupBunRouterRoutes sets up bunrouter routes for the RestHeadSpec API
 func SetupBunRouterRoutes(bunRouter *router.StandardBunRouterAdapter, handler *Handler) {
 	r := bunRouter.GetBunRouter()
 
-	// GET and POST for /:schema/:entity
-	r.Handle("GET", "/:schema/:entity", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-		}
-		reqAdapter := router.NewBunRouterRequest(req)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+	// Get all registered models from the registry
+	allModels := handler.registry.GetAllModels()
 
-	r.Handle("POST", "/:schema/:entity", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-		}
-		reqAdapter := router.NewBunRouterRequest(req)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+	// CORS config
+	corsConfig := common.DefaultCORSConfig()
 
-	// GET, PUT, PATCH, DELETE for /:schema/:entity/:id
-	r.Handle("GET", "/:schema/:entity/:id", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-			"id":     req.Param("id"),
-		}
-		reqAdapter := router.NewBunRouterRequest(req)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+	// Loop through each registered model and create explicit routes
+	for fullName := range allModels {
+		// Parse the full name (e.g., "public.users" or just "users")
+		schema, entity := parseModelName(fullName)
 
-	r.Handle("POST", "/:schema/:entity/:id", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-			"id":     req.Param("id"),
-		}
-		reqAdapter := router.NewBunRouterRequest(req)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+		// Build the route paths
+		entityPath := buildRoutePath(schema, entity)
+		entityWithIDPath := entityPath + "/:id"
+		metadataPath := entityPath + "/metadata"
 
-	r.Handle("PUT", "/:schema/:entity/:id", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-			"id":     req.Param("id"),
-		}
-		reqAdapter := router.NewBunRouterRequest(req)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+		// Create closure variables to capture current schema and entity
+		currentSchema := schema
+		currentEntity := entity
 
-	r.Handle("PATCH", "/:schema/:entity/:id", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-			"id":     req.Param("id"),
-		}
-		reqAdapter := router.NewBunRouterRequest(req)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+		// GET and POST for /{schema}/{entity}
+		r.Handle("GET", entityPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
 
-	r.Handle("DELETE", "/:schema/:entity/:id", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-			"id":     req.Param("id"),
-		}
-		reqAdapter := router.NewBunRouterRequest(req)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.Handle(respAdapter, reqAdapter, params)
-		return nil
-	})
+		r.Handle("POST", entityPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
 
-	// Metadata endpoint
-	r.Handle("GET", "/:schema/:entity/metadata", func(w http.ResponseWriter, req bunrouter.Request) error {
-		params := map[string]string{
-			"schema": req.Param("schema"),
-			"entity": req.Param("entity"),
-		}
-		reqAdapter := router.NewBunRouterRequest(req)
-		respAdapter := router.NewHTTPResponseWriter(w)
-		handler.HandleGet(respAdapter, reqAdapter, params)
-		return nil
-	})
+		// GET, POST, PUT, PATCH, DELETE for /{schema}/{entity}/:id
+		r.Handle("GET", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+				"id":     req.Param("id"),
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		r.Handle("POST", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+				"id":     req.Param("id"),
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		r.Handle("PUT", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+				"id":     req.Param("id"),
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		r.Handle("PATCH", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+				"id":     req.Param("id"),
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		r.Handle("DELETE", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+				"id":     req.Param("id"),
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.Handle(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		// Metadata endpoint
+		r.Handle("GET", metadataPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			common.SetCORSHeaders(respAdapter, corsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.HandleGet(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		// OPTIONS route without ID (returns metadata)
+		r.Handle("OPTIONS", entityPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			optionsCorsConfig := corsConfig
+			optionsCorsConfig.AllowedMethods = []string{"GET", "POST", "OPTIONS"}
+			common.SetCORSHeaders(respAdapter, optionsCorsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.HandleGet(respAdapter, reqAdapter, params)
+			return nil
+		})
+
+		// OPTIONS route with ID (returns metadata)
+		r.Handle("OPTIONS", entityWithIDPath, func(w http.ResponseWriter, req bunrouter.Request) error {
+			respAdapter := router.NewHTTPResponseWriter(w)
+			optionsCorsConfig := corsConfig
+			optionsCorsConfig.AllowedMethods = []string{"GET", "PUT", "PATCH", "DELETE", "POST", "OPTIONS"}
+			common.SetCORSHeaders(respAdapter, optionsCorsConfig)
+			params := map[string]string{
+				"schema": currentSchema,
+				"entity": currentEntity,
+			}
+			reqAdapter := router.NewBunRouterRequest(req)
+			handler.HandleGet(respAdapter, reqAdapter, params)
+			return nil
+		})
+	}
 }
 
 // ExampleBunRouterWithBunDB shows usage with both BunRouter and Bun DB

pkg/restheadspec/security_hooks.go

@@ -0,0 +1,82 @@
+package restheadspec
+
+import (
+	"context"
+
+	"github.com/bitechdev/ResolveSpec/pkg/logger"
+	"github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+// RegisterSecurityHooks registers all security-related hooks with the handler
+func RegisterSecurityHooks(handler *Handler, securityList *security.SecurityList) {
+	// Hook 1: BeforeRead - Load security rules
+	handler.Hooks().Register(BeforeRead, func(hookCtx *HookContext) error {
+		secCtx := newSecurityContext(hookCtx)
+		return security.LoadSecurityRules(secCtx, securityList)
+	})
+
+	// Hook 2: BeforeScan - Apply row-level security filters
+	handler.Hooks().Register(BeforeScan, func(hookCtx *HookContext) error {
+		secCtx := newSecurityContext(hookCtx)
+		return security.ApplyRowSecurity(secCtx, securityList)
+	})
+
+	// Hook 3: AfterRead - Apply column-level security (masking)
+	handler.Hooks().Register(AfterRead, func(hookCtx *HookContext) error {
+		secCtx := newSecurityContext(hookCtx)
+		return security.ApplyColumnSecurity(secCtx, securityList)
+	})
+
+	// Hook 4 (Optional): Audit logging
+	handler.Hooks().Register(AfterRead, func(hookCtx *HookContext) error {
+		secCtx := newSecurityContext(hookCtx)
+		return security.LogDataAccess(secCtx)
+	})
+
+	logger.Info("Security hooks registered for restheadspec handler")
+}
+
+// securityContext adapts restheadspec.HookContext to security.SecurityContext interface
+type securityContext struct {
+	ctx *HookContext
+}
+
+func newSecurityContext(ctx *HookContext) security.SecurityContext {
+	return &securityContext{ctx: ctx}
+}
+
+func (s *securityContext) GetContext() context.Context {
+	return s.ctx.Context
+}
+
+func (s *securityContext) GetUserID() (int, bool) {
+	return security.GetUserID(s.ctx.Context)
+}
+
+func (s *securityContext) GetSchema() string {
+	return s.ctx.Schema
+}
+
+func (s *securityContext) GetEntity() string {
+	return s.ctx.Entity
+}
+
+func (s *securityContext) GetModel() interface{} {
+	return s.ctx.Model
+}
+
+func (s *securityContext) GetQuery() interface{} {
+	return s.ctx.Query
+}
+
+func (s *securityContext) SetQuery(query interface{}) {
+	s.ctx.Query = query
+}
+
+func (s *securityContext) GetResult() interface{} {
+	return s.ctx.Result
+}
+
+func (s *securityContext) SetResult(result interface{}) {
+	s.ctx.Result = result
+}

pkg/security/CALLBACKS_GUIDE.md

@@ -1,662 +0,0 @@
-# Security Provider Callbacks Guide
-
-## Overview
-
-The ResolveSpec security provider uses a **callback-based architecture** that requires you to implement three functions:
-
-1. **AuthenticateCallback** - Extract user credentials from HTTP requests
-2. **LoadColumnSecurityCallback** - Load column security rules for masking/hiding
-3. **LoadRowSecurityCallback** - Load row security filters (WHERE clauses)
-
-This design allows you to integrate the security provider with **any** authentication system and database schema.
-
----
-
-## Why Callbacks?
-
-The callback-based design provides:
-
-✅ **Flexibility** - Works with any auth system (JWT, session, OAuth, custom)
-✅ **Database Agnostic** - No assumptions about your security table schema
-✅ **Testability** - Easy to mock for unit tests
-✅ **Extensibility** - Add custom logic without modifying core code
-
----
-
-## Quick Start
-
-### Step 1: Implement the Three Callbacks
-
-```go
-package main
-
-import (
-    "fmt"
-    "net/http"
-    "github.com/bitechdev/ResolveSpec/pkg/security"
-)
-
-// 1. Authentication: Extract user from request
-func myAuthFunction(r *http.Request) (userID int, roles string, err error) {
-    // Your auth logic here (JWT, session, header, etc.)
-    token := r.Header.Get("Authorization")
-    userID, roles, err = validateToken(token)
-    return userID, roles, err
-}
-
-// 2. Column Security: Load column masking rules
-func myLoadColumnSecurity(userID int, schema, tablename string) ([]security.ColumnSecurity, error) {
-    // Your database query or config lookup here
-    return loadColumnRulesFromDatabase(userID, schema, tablename)
-}
-
-// 3. Row Security: Load row filtering rules
-func myLoadRowSecurity(userID int, schema, tablename string) (security.RowSecurity, error) {
-    // Your database query or config lookup here
-    return loadRowRulesFromDatabase(userID, schema, tablename)
-}
-```
-
-### Step 2: Configure the Callbacks
-
-```go
-func main() {
-    db := setupDatabase()
-    handler := restheadspec.NewHandlerWithGORM(db)
-
-    // Configure callbacks BEFORE SetupSecurityProvider
-    security.GlobalSecurity.AuthenticateCallback = myAuthFunction
-    security.GlobalSecurity.LoadColumnSecurityCallback = myLoadColumnSecurity
-    security.GlobalSecurity.LoadRowSecurityCallback = myLoadRowSecurity
-
-    // Setup security provider (validates callbacks are set)
-    if err := security.SetupSecurityProvider(handler, &security.GlobalSecurity); err != nil {
-        log.Fatal(err) // Fails if callbacks not configured
-    }
-
-    // Apply middleware
-    router := mux.NewRouter()
-    restheadspec.SetupMuxRoutes(router, handler)
-    router.Use(mux.MiddlewareFunc(security.AuthMiddleware))
-    router.Use(mux.MiddlewareFunc(security.SetSecurityMiddleware))
-
-    http.ListenAndServe(":8080", router)
-}
-```
-
----
-
-## Callback 1: AuthenticateCallback
-
-### Function Signature
-
-```go
-func(r *http.Request) (userID int, roles string, err error)
-```
-
-### Parameters
-- `r *http.Request` - The incoming HTTP request
-
-### Returns
-- `userID int` - The authenticated user's ID
-- `roles string` - User's roles (comma-separated, e.g., "admin,manager")
-- `err error` - Return error to reject the request (HTTP 401)
-
-### Example Implementations
-
-#### Simple Header-Based Auth
-```go
-func authenticateFromHeader(r *http.Request) (int, string, error) {
-    userIDStr := r.Header.Get("X-User-ID")
-    if userIDStr == "" {
-        return 0, "", fmt.Errorf("X-User-ID header required")
-    }
-
-    userID, err := strconv.Atoi(userIDStr)
-    if err != nil {
-        return 0, "", fmt.Errorf("invalid user ID")
-    }
-
-    roles := r.Header.Get("X-User-Roles") // Optional
-    return userID, roles, nil
-}
-```
-
-#### JWT Token Auth
-```go
-import "github.com/golang-jwt/jwt/v5"
-
-func authenticateFromJWT(r *http.Request) (int, string, error) {
-    authHeader := r.Header.Get("Authorization")
-    tokenString := strings.TrimPrefix(authHeader, "Bearer ")
-
-    token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
-        return []byte(os.Getenv("JWT_SECRET")), nil
-    })
-
-    if err != nil || !token.Valid {
-        return 0, "", fmt.Errorf("invalid token")
-    }
-
-    claims := token.Claims.(jwt.MapClaims)
-    userID := int(claims["user_id"].(float64))
-    roles := claims["roles"].(string)
-
-    return userID, roles, nil
-}
-```
-
-#### Session Cookie Auth
-```go
-func authenticateFromSession(r *http.Request) (int, string, error) {
-    cookie, err := r.Cookie("session_id")
-    if err != nil {
-        return 0, "", fmt.Errorf("no session cookie")
-    }
-
-    session, err := sessionStore.Get(cookie.Value)
-    if err != nil {
-        return 0, "", fmt.Errorf("invalid session")
-    }
-
-    return session.UserID, session.Roles, nil
-}
-```
-
----
-
-## Callback 2: LoadColumnSecurityCallback
-
-### Function Signature
-
-```go
-func(pUserID int, pSchema, pTablename string) ([]ColumnSecurity, error)
-```
-
-### Parameters
-- `pUserID int` - The authenticated user's ID
-- `pSchema string` - Database schema (e.g., "public")
-- `pTablename string` - Table name (e.g., "employees")
-
-### Returns
-- `[]ColumnSecurity` - List of column security rules
-- `error` - Return error if loading fails
-
-### ColumnSecurity Structure
-
-```go
-type ColumnSecurity struct {
-    Schema       string   // "public"
-    Tablename    string   // "employees"
-    Path         []string // ["ssn"] or ["address", "street"]
-    Accesstype   string   // "mask" or "hide"
-
-    // Masking configuration (for Accesstype = "mask")
-    MaskStart    int      // Mask first N characters
-    MaskEnd      int      // Mask last N characters
-    MaskInvert   bool     // true = mask middle, false = mask edges
-    MaskChar     string   // Character to use for masking (default "*")
-
-    // Optional fields
-    ExtraFilters map[string]string
-    Control      string
-    ID           int
-    UserID       int
-}
-```
-
-### Example Implementations
-
-#### Load from Database
-```go
-func loadColumnSecurityFromDB(userID int, schema, tablename string) ([]security.ColumnSecurity, error) {
-    var rules []security.ColumnSecurity
-
-    query := `
-        SELECT control, accesstype, jsonvalue
-        FROM core.secacces
-        WHERE rid_hub IN (
-            SELECT rid_hub_parent FROM core.hub_link
-            WHERE rid_hub_child = ? AND parent_hubtype = 'secgroup'
-        )
-        AND control ILIKE ?
-    `
-
-    rows, err := db.Query(query, userID, fmt.Sprintf("%s.%s%%", schema, tablename))
-    if err != nil {
-        return nil, err
-    }
-    defer rows.Close()
-
-    for rows.Next() {
-        var control, accesstype, jsonValue string
-        rows.Scan(&control, &accesstype, &jsonValue)
-
-        // Parse control: "schema.table.column"
-        parts := strings.Split(control, ".")
-        if len(parts) < 3 {
-            continue
-        }
-
-        rule := security.ColumnSecurity{
-            Schema:     schema,
-            Tablename:  tablename,
-            Path:       parts[2:],
-            Accesstype: accesstype,
-        }
-
-        // Parse JSON configuration
-        var config map[string]interface{}
-        json.Unmarshal([]byte(jsonValue), &config)
-        if start, ok := config["start"].(float64); ok {
-            rule.MaskStart = int(start)
-        }
-        if end, ok := config["end"].(float64); ok {
-            rule.MaskEnd = int(end)
-        }
-        if char, ok := config["char"].(string); ok {
-            rule.MaskChar = char
-        }
-
-        rules = append(rules, rule)
-    }
-
-    return rules, nil
-}
-```
-
-#### Load from Static Config
-```go
-func loadColumnSecurityFromConfig(userID int, schema, tablename string) ([]security.ColumnSecurity, error) {
-    // Define security rules in code
-    allRules := map[string][]security.ColumnSecurity{
-        "public.employees": {
-            {
-                Schema:     "public",
-                Tablename:  "employees",
-                Path:       []string{"ssn"},
-                Accesstype: "mask",
-                MaskStart:  5,
-                MaskChar:   "*",
-            },
-            {
-                Schema:     "public",
-                Tablename:  "employees",
-                Path:       []string{"salary"},
-                Accesstype: "hide",
-            },
-        },
-    }
-
-    key := fmt.Sprintf("%s.%s", schema, tablename)
-    rules, ok := allRules[key]
-    if !ok {
-        return []security.ColumnSecurity{}, nil // No rules
-    }
-
-    return rules, nil
-}
-```
-
-### Column Security Examples
-
-**Mask SSN (show last 4 digits):**
-```go
-ColumnSecurity{
-    Path:       []string{"ssn"},
-    Accesstype: "mask",
-    MaskStart:  5,      // Mask first 5 characters
-    MaskEnd:    0,      // Keep last 4 visible
-    MaskChar:   "*",
-}
-// Result: "123-45-6789" → "*****6789"
-```
-
-**Hide entire field:**
-```go
-ColumnSecurity{
-    Path:       []string{"salary"},
-    Accesstype: "hide",
-}
-// Result: salary field returns 0 or empty
-```
-
-**Mask credit card (show last 4 digits):**
-```go
-ColumnSecurity{
-    Path:       []string{"credit_card"},
-    Accesstype: "mask",
-    MaskStart:  12,
-    MaskChar:   "*",
-}
-// Result: "1234-5678-9012-3456" → "************3456"
-```
-
----
-
-## Callback 3: LoadRowSecurityCallback
-
-### Function Signature
-
-```go
-func(pUserID int, pSchema, pTablename string) (RowSecurity, error)
-```
-
-### Parameters
-- `pUserID int` - The authenticated user's ID
-- `pSchema string` - Database schema
-- `pTablename string` - Table name
-
-### Returns
-- `RowSecurity` - Row security configuration
-- `error` - Return error if loading fails
-
-### RowSecurity Structure
-
-```go
-type RowSecurity struct {
-    Schema    string // "public"
-    Tablename string // "orders"
-    UserID    int    // Current user ID
-    Template  string // WHERE clause template (e.g., "user_id = {UserID}")
-    HasBlock  bool   // If true, block ALL access to this table
-}
-```
-
-### Template Variables
-
-You can use these placeholders in the `Template` string:
-- `{UserID}` - Current user's ID
-- `{PrimaryKeyName}` - Primary key column name
-- `{TableName}` - Table name
-- `{SchemaName}` - Schema name
-
-### Example Implementations
-
-#### Load from Database Function
-```go
-func loadRowSecurityFromDB(userID int, schema, tablename string) (security.RowSecurity, error) {
-    var record security.RowSecurity
-
-    query := `
-        SELECT p_template, p_block
-        FROM core.api_sec_rowtemplate(?, ?, ?)
-    `
-
-    row := db.QueryRow(query, schema, tablename, userID)
-    err := row.Scan(&record.Template, &record.HasBlock)
-    if err != nil {
-        return security.RowSecurity{}, err
-    }
-
-    record.Schema = schema
-    record.Tablename = tablename
-    record.UserID = userID
-
-    return record, nil
-}
-```
-
-#### Load from Static Config
-```go
-func loadRowSecurityFromConfig(userID int, schema, tablename string) (security.RowSecurity, error) {
-    key := fmt.Sprintf("%s.%s", schema, tablename)
-
-    // Define templates for each table
-    templates := map[string]string{
-        "public.orders":    "user_id = {UserID}",
-        "public.documents": "user_id = {UserID} OR is_public = true",
-    }
-
-    // Define blocked tables
-    blocked := map[string]bool{
-        "public.admin_logs": true,
-    }
-
-    if blocked[key] {
-        return security.RowSecurity{
-            Schema:    schema,
-            Tablename: tablename,
-            UserID:    userID,
-            HasBlock:  true,
-        }, nil
-    }
-
-    template, ok := templates[key]
-    if !ok {
-        // No row security - allow all rows
-        return security.RowSecurity{
-            Schema:    schema,
-            Tablename: tablename,
-            UserID:    userID,
-            Template:  "",
-            HasBlock:  false,
-        }, nil
-    }
-
-    return security.RowSecurity{
-        Schema:    schema,
-        Tablename: tablename,
-        UserID:    userID,
-        Template:  template,
-        HasBlock:  false,
-    }, nil
-}
-```
-
-### Row Security Examples
-
-**Users see only their own records:**
-```go
-RowSecurity{
-    Template: "user_id = {UserID}",
-}
-// Query: SELECT * FROM orders WHERE user_id = 123
-```
-
-**Users see their records OR public records:**
-```go
-RowSecurity{
-    Template: "user_id = {UserID} OR is_public = true",
-}
-```
-
-**Complex filter with subquery:**
-```go
-RowSecurity{
-    Template: "department_id IN (SELECT department_id FROM user_departments WHERE user_id = {UserID})",
-}
-```
-
-**Block all access:**
-```go
-RowSecurity{
-    HasBlock: true,
-}
-// All queries to this table will be rejected
-```
-
----
-
-## Complete Integration Example
-
-```go
-package main
-
-import (
-    "fmt"
-    "log"
-    "net/http"
-    "strconv"
-
-    "github.com/bitechdev/ResolveSpec/pkg/restheadspec"
-    "github.com/bitechdev/ResolveSpec/pkg/security"
-    "github.com/gorilla/mux"
-    "gorm.io/gorm"
-)
-
-func main() {
-    db := setupDatabase()
-    handler := restheadspec.NewHandlerWithGORM(db)
-    handler.RegisterModel("public", "orders", Order{})
-
-    // ===== CONFIGURE CALLBACKS =====
-    security.GlobalSecurity.AuthenticateCallback = authenticateUser
-    security.GlobalSecurity.LoadColumnSecurityCallback = loadColumnSec
-    security.GlobalSecurity.LoadRowSecurityCallback = loadRowSec
-
-    // ===== SETUP SECURITY =====
-    if err := security.SetupSecurityProvider(handler, &security.GlobalSecurity); err != nil {
-        log.Fatal("Security setup failed:", err)
-    }
-
-    // ===== SETUP ROUTES =====
-    router := mux.NewRouter()
-    restheadspec.SetupMuxRoutes(router, handler)
-    router.Use(mux.MiddlewareFunc(security.AuthMiddleware))
-    router.Use(mux.MiddlewareFunc(security.SetSecurityMiddleware))
-
-    log.Println("Server starting on :8080")
-    http.ListenAndServe(":8080", router)
-}
-
-// Callback implementations
-func authenticateUser(r *http.Request) (int, string, error) {
-    userIDStr := r.Header.Get("X-User-ID")
-    if userIDStr == "" {
-        return 0, "", fmt.Errorf("authentication required")
-    }
-    userID, err := strconv.Atoi(userIDStr)
-    return userID, "", err
-}
-
-func loadColumnSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
-    // Your implementation here
-    return []security.ColumnSecurity{}, nil
-}
-
-func loadRowSec(userID int, schema, table string) (security.RowSecurity, error) {
-    return security.RowSecurity{
-        Schema:    schema,
-        Tablename: table,
-        UserID:    userID,
-        Template:  "user_id = " + strconv.Itoa(userID),
-    }, nil
-}
-```
-
----
-
-## Testing Your Callbacks
-
-### Unit Test Example
-
-```go
-func TestAuthCallback(t *testing.T) {
-    req := httptest.NewRequest("GET", "/api/orders", nil)
-    req.Header.Set("X-User-ID", "123")
-
-    userID, roles, err := myAuthFunction(req)
-
-    assert.Nil(t, err)
-    assert.Equal(t, 123, userID)
-}
-
-func TestColumnSecurityCallback(t *testing.T) {
-    rules, err := myLoadColumnSecurity(123, "public", "employees")
-
-    assert.Nil(t, err)
-    assert.Greater(t, len(rules), 0)
-    assert.Equal(t, "mask", rules[0].Accesstype)
-}
-```
-
----
-
-## Common Patterns
-
-### Pattern 1: Role-Based Security
-
-```go
-func loadColumnSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
-    roles := getUserRoles(userID)
-
-    if contains(roles, "admin") {
-        // Admins see everything
-        return []security.ColumnSecurity{}, nil
-    }
-
-    // Non-admins have restrictions
-    return []security.ColumnSecurity{
-        {Path: []string{"ssn"}, Accesstype: "mask"},
-    }, nil
-}
-```
-
-### Pattern 2: Tenant Isolation
-
-```go
-func loadRowSec(userID int, schema, table string) (security.RowSecurity, error) {
-    tenantID := getUserTenant(userID)
-
-    return security.RowSecurity{
-        Template: fmt.Sprintf("tenant_id = %d", tenantID),
-    }, nil
-}
-```
-
-### Pattern 3: Caching Security Rules
-
-```go
-var securityCache = cache.New(5*time.Minute, 10*time.Minute)
-
-func loadColumnSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
-    cacheKey := fmt.Sprintf("%d:%s.%s", userID, schema, table)
-
-    if cached, found := securityCache.Get(cacheKey); found {
-        return cached.([]security.ColumnSecurity), nil
-    }
-
-    rules := loadFromDatabase(userID, schema, table)
-    securityCache.Set(cacheKey, rules, cache.DefaultExpiration)
-
-    return rules, nil
-}
-```
-
----
-
-## Troubleshooting
-
-### Error: "AuthenticateCallback not set"
-**Solution:** Configure all three callbacks before calling `SetupSecurityProvider`:
-```go
-security.GlobalSecurity.AuthenticateCallback = myAuthFunc
-security.GlobalSecurity.LoadColumnSecurityCallback = myColSecFunc
-security.GlobalSecurity.LoadRowSecurityCallback = myRowSecFunc
-```
-
-### Error: "Authentication failed"
-**Solution:** Check your `AuthenticateCallback` implementation. Ensure it returns valid user ID or proper error.
-
-### Security rules not applying
-**Solution:**
-1. Check callbacks are returning data
-2. Enable debug logging
-3. Verify database queries return results
-4. Check user has security groups assigned
-
----
-
-## Next Steps
-
-1. ✅ Implement the three callbacks for your system
-2. ✅ Configure `GlobalSecurity` with your callbacks
-3. ✅ Call `SetupSecurityProvider`
-4. ✅ Test with different users and verify isolation
-5. ✅ Review `callbacks_example.go` for more examples
-
-For complete working examples, see:
-- `pkg/security/callbacks_example.go` - 7 example implementations
-- `examples/secure_server/main.go` - Full server example
-- `pkg/security/README.md` - Comprehensive documentation

pkg/security/QUICK_REFERENCE.md

@@ -3,35 +3,97 @@
 ## 3-Step Setup
 
 ```go
-// Step 1: Implement callbacks
-func myAuth(r *http.Request) (int, string, error) { /* ... */ }
-func myColSec(userID int, schema, table string) ([]security.ColumnSecurity, error) { /* ... */ }
-func myRowSec(userID int, schema, table string) (security.RowSecurity, error) { /* ... */ }
+// Step 1: Create security providers
+auth := security.NewDatabaseAuthenticator(db) // Session-based (recommended)
+// OR: auth := security.NewJWTAuthenticator("secret-key", db)
+// OR: auth := security.NewHeaderAuthenticator()
 
-// Step 2: Configure callbacks
-security.GlobalSecurity.AuthenticateCallback = myAuth
-security.GlobalSecurity.LoadColumnSecurityCallback = myColSec
-security.GlobalSecurity.LoadRowSecurityCallback = myRowSec
+colSec := security.NewDatabaseColumnSecurityProvider(db)
+rowSec := security.NewDatabaseRowSecurityProvider(db)
+
+// Step 2: Combine providers
+provider := security.NewCompositeSecurityProvider(auth, colSec, rowSec)
 
 // Step 3: Setup and apply middleware
-security.SetupSecurityProvider(handler, &security.GlobalSecurity)
-router.Use(mux.MiddlewareFunc(security.AuthMiddleware))
-router.Use(mux.MiddlewareFunc(security.SetSecurityMiddleware))
+securityList := security.SetupSecurityProvider(handler, provider)
+router.Use(security.NewAuthMiddleware(securityList))
+router.Use(security.SetSecurityMiddleware(securityList))
 ```
 
 ---
 
-## Callback Signatures
+## Stored Procedures
+
+**All database operations use PostgreSQL stored procedures** with `resolvespec_*` naming:
+
+### Database Authenticators
+```go
+// DatabaseAuthenticator uses these stored procedures:
+resolvespec_login(jsonb)              // Login with credentials
+resolvespec_logout(jsonb)             // Invalidate session
+resolvespec_session(text, text)       // Validate session token
+resolvespec_session_update(text, jsonb) // Update activity timestamp
+resolvespec_refresh_token(text, jsonb)  // Generate new session
+
+// JWTAuthenticator uses these stored procedures:
+resolvespec_jwt_login(text, text)     // Validate credentials
+resolvespec_jwt_logout(text, int)     // Blacklist token
+```
+
+### Security Providers
+```go
+// DatabaseColumnSecurityProvider:
+resolvespec_column_security(int, text, text) // Load column rules
+
+// DatabaseRowSecurityProvider:
+resolvespec_row_security(text, text, int)    // Load row template
+```
+
+All stored procedures return structured results:
+- Session/Login: `(p_success bool, p_error text, p_data jsonb)`
+- Security: `(p_success bool, p_error text, p_rules jsonb)`
+
+See `database_schema.sql` for complete definitions.
+
+---
+
+## Interface Signatures
 
 ```go
-// 1. Authentication
-func(r *http.Request) (userID int, roles string, err error)
+// Authenticator interface
+type Authenticator interface {
+    Login(ctx context.Context, req LoginRequest) (*LoginResponse, error)
+    Logout(ctx context.Context, req LogoutRequest) error
+    Authenticate(r *http.Request) (*UserContext, error)
+}
 
-// 2. Column Security
-func(userID int, schema, tablename string) ([]ColumnSecurity, error)
+// ColumnSecurityProvider interface
+type ColumnSecurityProvider interface {
+    GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]ColumnSecurity, error)
+}
 
-// 3. Row Security
-func(userID int, schema, tablename string) (RowSecurity, error)
+// RowSecurityProvider interface
+type RowSecurityProvider interface {
+    GetRowSecurity(ctx context.Context, userID int, schema, table string) (RowSecurity, error)
+}
+```
+
+---
+
+## UserContext Structure
+
+```go
+security.UserContext{
+    UserID:    123,                  // User's unique ID
+    UserName:  "john_doe",          // Username
+    UserLevel: 5,                    // User privilege level
+    SessionID: "sess_abc123",       // Current session ID
+    RemoteID:  "remote_xyz",        // Remote system ID
+    Roles:     []string{"admin"},   // User roles
+    Email:     "john@example.com",  // User email
+    Claims:    map[string]any{},    // Additional authentication claims
+    Meta:      map[string]any{},    // Additional metadata (JSON-serializable)
+}
 ```
 
 ---
@@ -109,70 +171,204 @@ HasBlock: true
 
 ## Example Implementations
 
-### Simple Header Auth
+### Database Session Authenticator (Recommended)
 
 ```go
-func authFromHeader(r *http.Request) (int, string, error) {
+// Create authenticator
+auth := security.NewDatabaseAuthenticator(db)
+
+// Requires these tables:
+// - users (id, username, email, password, user_level, roles, is_active)
+// - user_sessions (session_token, user_id, expires_at, created_at, last_activity_at)
+// See database_schema.sql for full schema
+
+// Features:
+// - Login with username/password
+// - Session management in database
+// - Token refresh support (implements Refreshable)
+// - Automatic session expiration
+// - Tracks IP address and user agent
+// - Works with Authorization header or cookie
+```
+
+### Simple Header Authenticator
+
+```go
+type HeaderAuthenticator struct{}
+
+func NewHeaderAuthenticator() *HeaderAuthenticator {
+    return &HeaderAuthenticator{}
+}
+
+func (a *HeaderAuthenticator) Login(ctx context.Context, req security.LoginRequest) (*security.LoginResponse, error) {
+    return nil, fmt.Errorf("not supported")
+}
+
+func (a *HeaderAuthenticator) Logout(ctx context.Context, req security.LogoutRequest) error {
+    return nil
+}
+
+func (a *HeaderAuthenticator) Authenticate(r *http.Request) (*security.UserContext, error) {
     userIDStr := r.Header.Get("X-User-ID")
     if userIDStr == "" {
-        return 0, "", fmt.Errorf("X-User-ID required")
+        return nil, fmt.Errorf("X-User-ID required")
     }
-    userID, err := strconv.Atoi(userIDStr)
-    return userID, "", err
+    userID, _ := strconv.Atoi(userIDStr)
+    return &security.UserContext{
+        UserID:   userID,
+        UserName: r.Header.Get("X-User-Name"),
+    }, nil
 }
 ```
 
-### JWT Auth
+### JWT Authenticator
 
 ```go
-func authFromJWT(r *http.Request) (int, string, error) {
-    token := strings.TrimPrefix(r.Header.Get("Authorization"), "Bearer ")
-    claims, err := jwt.Parse(token, secret)
+type JWTAuthenticator struct {
+    secretKey []byte
+    db        *gorm.DB
+}
+
+func NewJWTAuthenticator(secret string, db *gorm.DB) *JWTAuthenticator {
+    return &JWTAuthenticator{secretKey: []byte(secret), db: db}
+}
+
+func (a *JWTAuthenticator) Login(ctx context.Context, req security.LoginRequest) (*security.LoginResponse, error) {
+    // Validate credentials against database
+    var user User
+    err := a.db.WithContext(ctx).Where("username = ?", req.Username).First(&user).Error
     if err != nil {
-        return 0, "", err
+        return nil, fmt.Errorf("invalid credentials")
     }
-    return claims.UserID, claims.Roles, nil
+
+    // Generate JWT token
+    token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
+        "user_id": user.ID,
+        "exp":     time.Now().Add(24 * time.Hour).Unix(),
+    })
+    tokenString, _ := token.SignedString(a.secretKey)
+
+    return &security.LoginResponse{
+        Token:     tokenString,
+        User:      &security.UserContext{UserID: user.ID},
+        ExpiresIn: 86400,
+    }, nil
+}
+
+func (a *JWTAuthenticator) Logout(ctx context.Context, req security.LogoutRequest) error {
+    // Add to blacklist
+    return a.db.WithContext(ctx).Table("token_blacklist").Create(map[string]any{
+        "token":   req.Token,
+        "user_id": req.UserID,
+    }).Error
+}
+
+func (a *JWTAuthenticator) Authenticate(r *http.Request) (*security.UserContext, error) {
+    tokenString := strings.TrimPrefix(r.Header.Get("Authorization"), "Bearer ")
+    token, err := jwt.Parse(tokenString, func(t *jwt.Token) (any, error) {
+        return a.secretKey, nil
+    })
+    if err != nil || !token.Valid {
+        return nil, fmt.Errorf("invalid token")
+    }
+    claims := token.Claims.(jwt.MapClaims)
+    return &security.UserContext{
+        UserID: int(claims["user_id"].(float64)),
+    }, nil
 }
 ```
 
 ### Static Column Security
 
 ```go
-func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
-    if table == "employees" {
-        return []security.ColumnSecurity{
-            {Path: []string{"ssn"}, Accesstype: "mask", MaskStart: 5},
-            {Path: []string{"salary"}, Accesstype: "hide"},
-        }, nil
-    }
-    return []security.ColumnSecurity{}, nil
+type ConfigColumnSecurityProvider struct {
+    rules map[string][]security.ColumnSecurity
+}
+
+func NewConfigColumnSecurityProvider(rules map[string][]security.ColumnSecurity) *ConfigColumnSecurityProvider {
+    return &ConfigColumnSecurityProvider{rules: rules}
+}
+
+func (p *ConfigColumnSecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
+    key := fmt.Sprintf("%s.%s", schema, table)
+    return p.rules[key], nil
 }
 ```
 
 ### Database Column Security
 
 ```go
-func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
-    rows, err := db.Query(`
+type DatabaseColumnSecurityProvider struct {
+    db *gorm.DB
+}
+
+func NewDatabaseColumnSecurityProvider(db *gorm.DB) *DatabaseColumnSecurityProvider {
+    return &DatabaseColumnSecurityProvider{db: db}
+}
+
+func (p *DatabaseColumnSecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
+    var records []struct {
+        Control    string
+        Accesstype string
+        JSONValue  string
+    }
+
+    query := `
         SELECT control, accesstype, jsonvalue
-        FROM core.secacces
-        WHERE rid_hub IN (...)
+        FROM core.secaccess
+        WHERE rid_hub IN (
+            SELECT rid_hub_parent FROM core.hub_link
+            WHERE rid_hub_child = ? AND parent_hubtype = 'secgroup'
+        )
         AND control ILIKE ?
-    `, fmt.Sprintf("%s.%s%%", schema, table))
-    // ... parse and return
+    `
+
+    err := p.db.WithContext(ctx).Raw(query, userID, fmt.Sprintf("%s.%s%%", schema, table)).Scan(&records).Error
+    if err != nil {
+        return nil, err
+    }
+
+    var rules []security.ColumnSecurity
+    for _, rec := range records {
+        parts := strings.Split(rec.Control, ".")
+        if len(parts) < 3 {
+            continue
+        }
+        rules = append(rules, security.ColumnSecurity{
+            Schema:     schema,
+            Tablename:  table,
+            Path:       parts[2:],
+            Accesstype: rec.Accesstype,
+        })
+    }
+    return rules, nil
 }
 ```
 
 ### Static Row Security
 
 ```go
-func loadRowSec(userID int, schema, table string) (security.RowSecurity, error) {
-    templates := map[string]string{
-        "orders":    "user_id = {UserID}",
-        "documents": "user_id = {UserID} OR is_public = true",
+type ConfigRowSecurityProvider struct {
+    templates map[string]string
+    blocked   map[string]bool
+}
+
+func NewConfigRowSecurityProvider(templates map[string]string, blocked map[string]bool) *ConfigRowSecurityProvider {
+    return &ConfigRowSecurityProvider{templates: templates, blocked: blocked}
+}
+
+func (p *ConfigRowSecurityProvider) GetRowSecurity(ctx context.Context, userID int, schema, table string) (security.RowSecurity, error) {
+    key := fmt.Sprintf("%s.%s", schema, table)
+
+    if p.blocked[key] {
+        return security.RowSecurity{HasBlock: true}, nil
     }
+
     return security.RowSecurity{
-        Template: templates[table],
+        Schema:    schema,
+        Tablename: table,
+        UserID:    userID,
+        Template:  p.templates[key],
     }, nil
 }
 ```
@@ -182,19 +378,22 @@ func loadRowSec(userID int, schema, table string) (security.RowSecurity, error)
 ## Testing
 
 ```go
-// Test auth callback
+// Test Authenticator
+auth := security.NewHeaderAuthenticator()
 req := httptest.NewRequest("GET", "/", nil)
 req.Header.Set("X-User-ID", "123")
-userID, roles, err := myAuth(req)
-assert.Equal(t, 123, userID)
+userCtx, err := auth.Authenticate(req)
+assert.Equal(t, 123, userCtx.UserID)
 
-// Test column security callback
-rules, err := myColSec(123, "public", "employees")
-assert.Equal(t, "mask", rules[0].Accesstype)
+// Test ColumnSecurityProvider
+colSec := security.NewConfigColumnSecurityProvider(rules)
+cols, err := colSec.GetColumnSecurity(context.Background(), 123, "public", "employees")
+assert.Equal(t, "mask", cols[0].Accesstype)
 
-// Test row security callback
-rowSec, err := myRowSec(123, "public", "orders")
-assert.Equal(t, "user_id = {UserID}", rowSec.Template)
+// Test RowSecurityProvider
+rowSec := security.NewConfigRowSecurityProvider(templates, blocked)
+row, err := rowSec.GetRowSecurity(context.Background(), 123, "public", "orders")
+assert.Equal(t, "user_id = {UserID}", row.Template)
 ```
 
 ---
@@ -204,13 +403,13 @@ assert.Equal(t, "user_id = {UserID}", rowSec.Template)
 ```
 HTTP Request
     ↓
-AuthMiddleware → calls AuthenticateCallback
-    ↓ (adds userID to context)
-SetSecurityMiddleware → adds GlobalSecurity to context
+NewAuthMiddleware → calls provider.Authenticate()
+    ↓ (adds UserContext to context)
+SetSecurityMiddleware → adds SecurityList to context
     ↓
 Handler.Handle()
     ↓
-BeforeRead Hook → calls LoadColumnSecurityCallback + LoadRowSecurityCallback
+BeforeRead Hook → calls provider.GetColumnSecurity() + GetRowSecurity()
     ↓
 BeforeScan Hook → applies row security (WHERE clause)
     ↓
@@ -228,10 +427,13 @@ HTTP Response
 ### Role-Based Security
 
 ```go
-func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
-    if isAdmin(userID) {
+func (p *MyColumnSecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
+    userCtx, _ := security.GetUserContext(ctx)
+
+    if contains(userCtx.Roles, "admin") {
         return []security.ColumnSecurity{}, nil // No restrictions
     }
+
     return loadRestrictions(userID, schema, table), nil
 }
 ```
@@ -239,7 +441,7 @@ func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, er
 ### Tenant Isolation
 
 ```go
-func loadRowSec(userID int, schema, table string) (security.RowSecurity, error) {
+func (p *MyRowSecurityProvider) GetRowSecurity(ctx context.Context, userID int, schema, table string) (security.RowSecurity, error) {
     tenantID := getUserTenant(userID)
     return security.RowSecurity{
         Template: fmt.Sprintf("tenant_id = %d", tenantID),
@@ -247,19 +449,26 @@ func loadRowSec(userID int, schema, table string) (security.RowSecurity, error)
 }
 ```
 
-### Caching
+### Caching with Decorator
 
 ```go
-var cache = make(map[string][]security.ColumnSecurity)
+type CachedColumnSecurityProvider struct {
+    inner security.ColumnSecurityProvider
+    cache *cache.Cache
+}
 
-func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
+func (p *CachedColumnSecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
     key := fmt.Sprintf("%d:%s.%s", userID, schema, table)
-    if cached, ok := cache[key]; ok {
-        return cached, nil
+
+    if cached, found := p.cache.Get(key); found {
+        return cached.([]security.ColumnSecurity), nil
     }
-    rules := loadFromDB(userID, schema, table)
-    cache[key] = rules
-    return rules, nil
+
+    rules, err := p.inner.GetColumnSecurity(ctx, userID, schema, table)
+    if err == nil {
+        p.cache.Set(key, rules, cache.DefaultExpiration)
+    }
+    return rules, err
 }
 ```
 
@@ -268,21 +477,20 @@ func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, er
 ## Error Handling
 
 ```go
-// Setup will fail if callbacks not configured
-if err := security.SetupSecurityProvider(handler, &security.GlobalSecurity); err != nil {
-    log.Fatal("Security setup failed:", err)
-}
+// Panic if provider is nil
+provider := security.NewCompositeSecurityProvider(auth, colSec, rowSec)
+// panics if any parameter is nil
 
-// Auth middleware rejects if callback returns error
-func myAuth(r *http.Request) (int, string, error) {
+// Auth middleware returns 401 if Authenticate fails
+func (a *MyAuthenticator) Authenticate(r *http.Request) (*security.UserContext, error) {
     if invalid {
-        return 0, "", fmt.Errorf("invalid credentials") // Returns HTTP 401
+        return nil, fmt.Errorf("invalid credentials") // Returns HTTP 401
     }
-    return userID, roles, nil
+    return &security.UserContext{UserID: userID}, nil
 }
 
 // Security loading can fail gracefully
-func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
+func (p *MyProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
     rules, err := db.Load(...)
     if err != nil {
         log.Printf("Failed to load security: %v", err)
@@ -294,6 +502,45 @@ func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, er
 
 ---
 
+## Login/Logout Endpoints
+
+```go
+func SetupAuthRoutes(router *mux.Router, securityList *security.SecurityList) {
+    // Login
+    router.HandleFunc("/auth/login", func(w http.ResponseWriter, r *http.Request) {
+        var req security.LoginRequest
+        json.NewDecoder(r.Body).Decode(&req)
+
+        resp, err := securityList.Provider().Login(r.Context(), req)
+        if err != nil {
+            http.Error(w, err.Error(), http.StatusUnauthorized)
+            return
+        }
+
+        json.NewEncoder(w).Encode(resp)
+    }).Methods("POST")
+
+    // Logout
+    router.HandleFunc("/auth/logout", func(w http.ResponseWriter, r *http.Request) {
+        token := r.Header.Get("Authorization")
+        userID, _ := security.GetUserID(r.Context())
+
+        err := securityList.Provider().Logout(r.Context(), security.LogoutRequest{
+            Token:  token,
+            UserID: userID,
+        })
+        if err != nil {
+            http.Error(w, err.Error(), http.StatusInternalServerError)
+            return
+        }
+
+        w.WriteHeader(http.StatusOK)
+    }).Methods("POST")
+}
+```
+
+---
+
 ## Debugging
 
 ```go
@@ -301,15 +548,15 @@ func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, er
 import "github.com/bitechdev/GoCore/pkg/cfg"
 cfg.SetLogLevel("DEBUG")
 
-// Log in callbacks
-func myAuth(r *http.Request) (int, string, error) {
+// Log in provider methods
+func (a *MyAuthenticator) Authenticate(r *http.Request) (*security.UserContext, error) {
     token := r.Header.Get("Authorization")
     log.Printf("Auth: token=%s", token)
     // ...
 }
 
-// Check if callbacks are called
-func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, error) {
+// Check if methods are called
+func (p *MyColumnSecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
     log.Printf("Loading column security: user=%d, schema=%s, table=%s", userID, schema, table)
     // ...
 }
@@ -323,6 +570,7 @@ func loadColSec(userID int, schema, table string) ([]security.ColumnSecurity, er
 package main
 
 import (
+    "context"
     "fmt"
     "net/http"
     "strconv"
@@ -331,29 +579,42 @@ import (
     "github.com/gorilla/mux"
 )
 
+// Simple all-in-one provider
+type SimpleProvider struct{}
+
+func (p *SimpleProvider) Login(ctx context.Context, req security.LoginRequest) (*security.LoginResponse, error) {
+    return nil, fmt.Errorf("not implemented")
+}
+
+func (p *SimpleProvider) Logout(ctx context.Context, req security.LogoutRequest) error {
+    return nil
+}
+
+func (p *SimpleProvider) Authenticate(r *http.Request) (*security.UserContext, error) {
+    id, _ := strconv.Atoi(r.Header.Get("X-User-ID"))
+    return &security.UserContext{UserID: id}, nil
+}
+
+func (p *SimpleProvider) GetColumnSecurity(ctx context.Context, u int, s, t string) ([]security.ColumnSecurity, error) {
+    return []security.ColumnSecurity{}, nil
+}
+
+func (p *SimpleProvider) GetRowSecurity(ctx context.Context, u int, s, t string) (security.RowSecurity, error) {
+    return security.RowSecurity{Template: fmt.Sprintf("user_id = %d", u)}, nil
+}
+
 func main() {
     handler := restheadspec.NewHandlerWithGORM(db)
 
-    // Configure callbacks
-    security.GlobalSecurity.AuthenticateCallback = func(r *http.Request) (int, string, error) {
-        id, _ := strconv.Atoi(r.Header.Get("X-User-ID"))
-        return id, "", nil
-    }
-    security.GlobalSecurity.LoadColumnSecurityCallback = func(u int, s, t string) ([]security.ColumnSecurity, error) {
-        return []security.ColumnSecurity{}, nil
-    }
-    security.GlobalSecurity.LoadRowSecurityCallback = func(u int, s, t string) (security.RowSecurity, error) {
-        return security.RowSecurity{Template: fmt.Sprintf("user_id = %d", u)}, nil
-    }
+    // Setup security
+    provider := &SimpleProvider{}
+    securityList := security.SetupSecurityProvider(handler, provider)
 
-    // Setup
-    security.SetupSecurityProvider(handler, &security.GlobalSecurity)
-
-    // Middleware
+    // Apply middleware
     router := mux.NewRouter()
     restheadspec.SetupMuxRoutes(router, handler)
-    router.Use(mux.MiddlewareFunc(security.AuthMiddleware))
-    router.Use(mux.MiddlewareFunc(security.SetSecurityMiddleware))
+    router.Use(security.NewAuthMiddleware(securityList))
+    router.Use(security.SetSecurityMiddleware(securityList))
 
     http.ListenAndServe(":8080", router)
 }
@@ -361,15 +622,94 @@ func main() {
 
 ---
 
+## Authentication Modes
+
+```go
+// Required authentication (default)
+// Authentication must succeed or returns 401
+router.Use(security.NewAuthMiddleware(securityList))
+
+// Skip authentication for specific routes
+// Always sets guest user context
+func PublicRoute(w http.ResponseWriter, r *http.Request) {
+    ctx := security.SkipAuth(r.Context())
+    r = r.WithContext(ctx)
+    // Guest context will be set
+}
+
+// Optional authentication for specific routes
+// Tries to authenticate, falls back to guest if it fails
+func HomeRoute(w http.ResponseWriter, r *http.Request) {
+    ctx := security.OptionalAuth(r.Context())
+    r = r.WithContext(ctx)
+
+    userCtx, _ := security.GetUserContext(r.Context())
+    if userCtx.UserID == 0 {
+        // Guest user
+    } else {
+        // Authenticated user
+    }
+}
+```
+
+**Comparison:**
+- **Required**: Auth must succeed or return 401 (default)
+- **SkipAuth**: Never tries to authenticate, always guest
+- **OptionalAuth**: Tries to authenticate, guest on failure
+
+---
+
+## Standalone Handlers
+
+```go
+// NewAuthHandler - Required authentication (returns 401 on failure)
+authHandler := security.NewAuthHandler(securityList, myHandler)
+http.Handle("/api/protected", authHandler)
+
+// NewOptionalAuthHandler - Optional authentication (guest on failure)
+optionalHandler := security.NewOptionalAuthHandler(securityList, myHandler)
+http.Handle("/home", optionalHandler)
+
+// Example handler
+func myHandler(w http.ResponseWriter, r *http.Request) {
+    userCtx, _ := security.GetUserContext(r.Context())
+    if userCtx.UserID == 0 {
+        // Guest user
+    } else {
+        // Authenticated user
+    }
+}
+```
+
+---
+
+## Context Helpers
+
+```go
+// Get full user context
+userCtx, ok := security.GetUserContext(ctx)
+
+// Get individual fields
+userID, ok := security.GetUserID(ctx)
+userName, ok := security.GetUserName(ctx)
+userLevel, ok := security.GetUserLevel(ctx)
+sessionID, ok := security.GetSessionID(ctx)
+remoteID, ok := security.GetRemoteID(ctx)
+roles, ok := security.GetUserRoles(ctx)
+email, ok := security.GetUserEmail(ctx)
+meta, ok := security.GetUserMeta(ctx)
+```
+
+---
+
 ## Resources
 
 | File | Description |
 |------|-------------|
-| `CALLBACKS_GUIDE.md` | **Start here** - Complete implementation guide |
-| `callbacks_example.go` | 7 working examples to copy |
-| `CALLBACKS_SUMMARY.md` | Architecture overview |
-| `README.md` | Full documentation |
-| `setup_example.go` | Integration examples |
+| `INTERFACE_GUIDE.md` | **Start here** - Complete implementation guide |
+| `examples.go` | Working provider implementations to copy |
+| `setup_example.go` | 6 complete integration examples |
+| `README.md` | Architecture overview and migration guide |
 
 ---
 
@@ -377,22 +717,22 @@ func main() {
 
 ```go
 // ===== REQUIRED SETUP =====
-security.GlobalSecurity.AuthenticateCallback = myAuthFunc
-security.GlobalSecurity.LoadColumnSecurityCallback = myColFunc
-security.GlobalSecurity.LoadRowSecurityCallback = myRowFunc
-security.SetupSecurityProvider(handler, &security.GlobalSecurity)
+auth := security.NewJWTAuthenticator("secret", db)
+colSec := security.NewDatabaseColumnSecurityProvider(db)
+rowSec := security.NewDatabaseRowSecurityProvider(db)
+provider := security.NewCompositeSecurityProvider(auth, colSec, rowSec)
+securityList := security.SetupSecurityProvider(handler, provider)
 
-// ===== CALLBACK SIGNATURES =====
-func(r *http.Request) (int, string, error)                         // Auth
-func(int, string, string) ([]security.ColumnSecurity, error)       // Column
-func(int, string, string) (security.RowSecurity, error)            // Row
+// ===== INTERFACE METHODS =====
+Authenticate(r *http.Request) (*UserContext, error)
+Login(ctx context.Context, req LoginRequest) (*LoginResponse, error)
+Logout(ctx context.Context, req LogoutRequest) error
+GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]ColumnSecurity, error)
+GetRowSecurity(ctx context.Context, userID int, schema, table string) (RowSecurity, error)
 
 // ===== QUICK EXAMPLES =====
 // Header auth
-func(r *http.Request) (int, string, error) {
-    id, _ := strconv.Atoi(r.Header.Get("X-User-ID"))
-    return id, "", nil
-}
+&UserContext{UserID: 123, UserName: "john"}
 
 // Mask SSN
 {Path: []string{"ssn"}, Accesstype: "mask", MaskStart: 5}

pkg/security/README.md

@@ -0,0 +1,950 @@
+# ResolveSpec Security Provider
+
+Type-safe, composable security system for ResolveSpec with support for authentication, column-level security (masking), and row-level security (filtering).
+
+## Features
+
+- ✅ **Interface-Based** - Type-safe providers instead of callbacks
+- ✅ **Login/Logout Support** - Built-in authentication lifecycle
+- ✅ **Composable** - Mix and match different providers
+- ✅ **No Global State** - Each handler has its own security configuration
+- ✅ **Testable** - Easy to mock and test
+- ✅ **Extensible** - Implement custom providers for your needs
+- ✅ **Stored Procedures** - All database operations use PostgreSQL stored procedures for security and maintainability
+
+## Stored Procedure Architecture
+
+**All database-backed security providers use PostgreSQL stored procedures exclusively.** No raw SQL queries are executed from Go code.
+
+### Benefits
+
+- **Security**: Database logic is centralized and protected
+- **Maintainability**: Update database logic without recompiling Go code
+- **Performance**: Stored procedures are pre-compiled and optimized
+- **Testability**: Test database logic independently
+- **Consistency**: Standardized `resolvespec_*` naming convention
+
+### Available Stored Procedures
+
+| Procedure | Purpose | Used By |
+|-----------|---------|---------|
+| `resolvespec_login` | Session-based login | DatabaseAuthenticator |
+| `resolvespec_logout` | Session invalidation | DatabaseAuthenticator |
+| `resolvespec_session` | Session validation | DatabaseAuthenticator |
+| `resolvespec_session_update` | Update session activity | DatabaseAuthenticator |
+| `resolvespec_refresh_token` | Token refresh | DatabaseAuthenticator |
+| `resolvespec_jwt_login` | JWT user validation | JWTAuthenticator |
+| `resolvespec_jwt_logout` | JWT token blacklist | JWTAuthenticator |
+| `resolvespec_column_security` | Load column rules | DatabaseColumnSecurityProvider |
+| `resolvespec_row_security` | Load row templates | DatabaseRowSecurityProvider |
+
+See `database_schema.sql` for complete stored procedure definitions and examples.
+
+## Quick Start
+
+```go
+import (
+    "github.com/bitechdev/ResolveSpec/pkg/security"
+    "github.com/bitechdev/ResolveSpec/pkg/restheadspec"
+)
+
+// 1. Create security providers
+auth := security.NewJWTAuthenticator("your-secret-key", db)
+colSec := security.NewDatabaseColumnSecurityProvider(db)
+rowSec := security.NewDatabaseRowSecurityProvider(db)
+
+// 2. Combine providers
+provider := security.NewCompositeSecurityProvider(auth, colSec, rowSec)
+
+// 3. Create handler and register security hooks
+handler := restheadspec.NewHandlerWithGORM(db)
+securityList := security.NewSecurityList(provider)
+restheadspec.RegisterSecurityHooks(handler, securityList)
+
+// 4. Apply middleware
+router := mux.NewRouter()
+restheadspec.SetupMuxRoutes(router, handler)
+router.Use(security.NewAuthMiddleware(securityList))
+router.Use(security.SetSecurityMiddleware(securityList))
+```
+
+## Architecture
+
+### Spec-Agnostic Design
+
+The security system is **completely spec-agnostic** - it doesn't depend on any specific spec implementation. Instead, each spec (restheadspec, funcspec, resolvespec) implements its own security integration by adapting to the `SecurityContext` interface.
+
+```
+┌─────────────────────────────────────┐
+│     Security Package (Generic)      │
+│  - SecurityContext interface        │
+│  - Security providers                │
+│  - Core security logic               │
+└─────────────────────────────────────┘
+           ▲          ▲          ▲
+           │          │          │
+    ┌──────┘          │          └──────┐
+    │                 │                 │
+┌───▼────┐      ┌────▼─────┐     ┌────▼──────┐
+│RestHead│      │ FuncSpec │     │ResolveSpec│
+│  Spec  │      │          │     │           │
+│        │      │          │     │           │
+│Adapts  │      │ Adapts   │     │  Adapts   │
+│to      │      │ to       │     │  to       │
+│Security│      │ Security │     │  Security │
+│Context │      │ Context  │     │  Context  │
+└────────┘      └──────────┘     └───────────┘
+```
+
+**Benefits:**
+- ✅ No circular dependencies
+- ✅ Each spec can customize security integration
+- ✅ Easy to add new specs
+- ✅ Security logic is reusable across all specs
+
+### Core Interfaces
+
+The security system is built on three main interfaces:
+
+#### 1. Authenticator
+Handles user authentication lifecycle:
+
+```go
+type Authenticator interface {
+    Login(ctx context.Context, req LoginRequest) (*LoginResponse, error)
+    Logout(ctx context.Context, req LogoutRequest) error
+    Authenticate(r *http.Request) (*UserContext, error)
+}
+```
+
+#### 2. ColumnSecurityProvider
+Manages column-level security (masking/hiding):
+
+```go
+type ColumnSecurityProvider interface {
+    GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]ColumnSecurity, error)
+}
+```
+
+#### 3. RowSecurityProvider
+Manages row-level security (WHERE clause filtering):
+
+```go
+type RowSecurityProvider interface {
+    GetRowSecurity(ctx context.Context, userID int, schema, table string) (RowSecurity, error)
+}
+```
+
+### SecurityProvider
+The main interface that combines all three:
+
+```go
+type SecurityProvider interface {
+    Authenticator
+    ColumnSecurityProvider
+    RowSecurityProvider
+}
+```
+
+#### 4. SecurityContext (Spec Integration Interface)
+Each spec implements this interface to integrate with the security system:
+
+```go
+type SecurityContext interface {
+    GetContext() context.Context
+    GetUserID() (int, bool)
+    GetSchema() string
+    GetEntity() string
+    GetModel() interface{}
+    GetQuery() interface{}
+    SetQuery(interface{})
+    GetResult() interface{}
+    SetResult(interface{})
+}
+```
+
+**Implementation Examples:**
+- `restheadspec`: Adapts `restheadspec.HookContext` → `SecurityContext`
+- `funcspec`: Adapts `funcspec.HookContext` → `SecurityContext`
+- `resolvespec`: Adapts `resolvespec.HookContext` → `SecurityContext`
+
+### UserContext
+Enhanced user context with complete user information:
+
+```go
+type UserContext struct {
+    UserID    int            // User's unique ID
+    UserName  string         // Username
+    UserLevel int            // User privilege level
+    SessionID string         // Current session ID
+    RemoteID  string         // Remote system ID
+    Roles     []string       // User roles
+    Email     string         // User email
+    Claims    map[string]any // Additional authentication claims
+    Meta      map[string]any // Additional metadata (can hold any JSON-serializable values)
+}
+```
+
+## Available Implementations
+
+### Authenticators
+
+**HeaderAuthenticator** - Simple header-based authentication:
+```go
+auth := security.NewHeaderAuthenticator()
+// Expects: X-User-ID, X-User-Name, X-User-Level, etc.
+```
+
+**DatabaseAuthenticator** - Database session-based authentication (Recommended):
+```go
+auth := security.NewDatabaseAuthenticator(db)
+// Supports: Login, Logout, Session management, Token refresh
+// All operations use stored procedures: resolvespec_login, resolvespec_logout,
+// resolvespec_session, resolvespec_session_update, resolvespec_refresh_token
+// Requires: users and user_sessions tables + stored procedures (see database_schema.sql)
+```
+
+**JWTAuthenticator** - JWT token authentication with login/logout:
+```go
+auth := security.NewJWTAuthenticator("secret-key", db)
+// Supports: Login, Logout, JWT token validation
+// All operations use stored procedures: resolvespec_jwt_login, resolvespec_jwt_logout
+// Note: Requires JWT library installation for token signing/verification
+```
+
+### Column Security Providers
+
+**DatabaseColumnSecurityProvider** - Loads rules from database:
+```go
+colSec := security.NewDatabaseColumnSecurityProvider(db)
+// Uses stored procedure: resolvespec_column_security
+// Queries core.secaccess and core.hub_link tables
+```
+
+**ConfigColumnSecurityProvider** - Static configuration:
+```go
+rules := map[string][]security.ColumnSecurity{
+    "public.employees": {
+        {Path: []string{"ssn"}, Accesstype: "mask", MaskStart: 5},
+    },
+}
+colSec := security.NewConfigColumnSecurityProvider(rules)
+```
+
+### Row Security Providers
+
+**DatabaseRowSecurityProvider** - Loads filters from database:
+```go
+rowSec := security.NewDatabaseRowSecurityProvider(db)
+// Uses stored procedure: resolvespec_row_security
+```
+
+**ConfigRowSecurityProvider** - Static templates:
+```go
+templates := map[string]string{
+    "public.orders": "user_id = {UserID}",
+}
+blocked := map[string]bool{
+    "public.admin_logs": true,
+}
+rowSec := security.NewConfigRowSecurityProvider(templates, blocked)
+```
+
+## Usage Examples
+
+### Example 1: Complete Database-Backed Security with Sessions (restheadspec)
+
+```go
+func main() {
+    db := setupDatabase()
+
+    // Run migrations (see database_schema.sql)
+    // db.Exec("CREATE TABLE users ...")
+    // db.Exec("CREATE TABLE user_sessions ...")
+
+    // Create handler
+    handler := restheadspec.NewHandlerWithGORM(db)
+
+    // Create security providers
+    auth := security.NewDatabaseAuthenticator(db) // Session-based auth
+    colSec := security.NewDatabaseColumnSecurityProvider(db)
+    rowSec := security.NewDatabaseRowSecurityProvider(db)
+
+    // Combine providers
+    provider := security.NewCompositeSecurityProvider(auth, colSec, rowSec)
+    securityList := security.NewSecurityList(provider)
+
+    // Register security hooks for this spec
+    restheadspec.RegisterSecurityHooks(handler, securityList)
+
+    // Setup routes
+    router := mux.NewRouter()
+
+    // Add auth endpoints
+    router.HandleFunc("/auth/login", handleLogin(securityList)).Methods("POST")
+    router.HandleFunc("/auth/logout", handleLogout(securityList)).Methods("POST")
+    router.HandleFunc("/auth/refresh", handleRefresh(securityList)).Methods("POST")
+
+    // Setup API with security
+    apiRouter := router.PathPrefix("/api").Subrouter()
+    restheadspec.SetupMuxRoutes(apiRouter, handler)
+    apiRouter.Use(security.NewAuthMiddleware(securityList))
+    apiRouter.Use(security.SetSecurityMiddleware(securityList))
+
+    http.ListenAndServe(":8080", router)
+}
+
+func handleLogin(securityList *security.SecurityList) http.HandlerFunc {
+    return func(w http.ResponseWriter, r *http.Request) {
+        var req security.LoginRequest
+        json.NewDecoder(r.Body).Decode(&req)
+
+        // Add client info to claims
+        req.Claims = map[string]any{
+            "ip_address": r.RemoteAddr,
+            "user_agent": r.UserAgent(),
+        }
+
+        resp, err := securityList.Provider().Login(r.Context(), req)
+        if err != nil {
+            http.Error(w, err.Error(), http.StatusUnauthorized)
+            return
+        }
+
+        // Set session cookie (optional)
+        http.SetCookie(w, &http.Cookie{
+            Name:     "session_token",
+            Value:    resp.Token,
+            Expires:  time.Now().Add(24 * time.Hour),
+            HttpOnly: true,
+            Secure:   true, // Use in production with HTTPS
+            SameSite: http.SameSiteStrictMode,
+        })
+
+        json.NewEncoder(w).Encode(resp)
+    }
+}
+
+func handleRefresh(securityList *security.SecurityList) http.HandlerFunc {
+    return func(w http.ResponseWriter, r *http.Request) {
+        token := r.Header.Get("X-Refresh-Token")
+
+        if refreshable, ok := securityList.Provider().(security.Refreshable); ok {
+            resp, err := refreshable.RefreshToken(r.Context(), token)
+            if err != nil {
+                http.Error(w, err.Error(), http.StatusUnauthorized)
+                return
+            }
+            json.NewEncoder(w).Encode(resp)
+        } else {
+            http.Error(w, "Refresh not supported", http.StatusNotImplemented)
+        }
+    }
+}
+```
+
+### Example 2: Config-Based Security (No Database)
+
+```go
+func main() {
+    db := setupDatabase()
+    handler := restheadspec.NewHandlerWithGORM(db)
+
+    // Static column security rules
+    columnRules := map[string][]security.ColumnSecurity{
+        "public.employees": {
+            {Path: []string{"ssn"}, Accesstype: "mask", MaskStart: 5},
+            {Path: []string{"salary"}, Accesstype: "hide"},
+        },
+    }
+
+    // Static row security templates
+    rowTemplates := map[string]string{
+        "public.orders": "user_id = {UserID}",
+    }
+
+    // Create providers
+    auth := security.NewHeaderAuthenticator()
+    colSec := security.NewConfigColumnSecurityProvider(columnRules)
+    rowSec := security.NewConfigRowSecurityProvider(rowTemplates, nil)
+
+    // Combine providers and register hooks
+    provider := security.NewCompositeSecurityProvider(auth, colSec, rowSec)
+    securityList := security.NewSecurityList(provider)
+    restheadspec.RegisterSecurityHooks(handler, securityList)
+
+    // Setup routes...
+}
+```
+
+### Example 3: FuncSpec Security (SQL Query API)
+
+```go
+import (
+    "github.com/bitechdev/ResolveSpec/pkg/funcspec"
+    "github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+func main() {
+    db := setupDatabase()
+
+    // Create funcspec handler
+    handler := funcspec.NewHandler(db)
+
+    // Create security providers
+    auth := security.NewJWTAuthenticator("secret-key", db)
+    colSec := security.NewDatabaseColumnSecurityProvider(db)
+    rowSec := security.NewDatabaseRowSecurityProvider(db)
+
+    // Combine providers
+    provider := security.NewCompositeSecurityProvider(auth, colSec, rowSec)
+    securityList := security.NewSecurityList(provider)
+
+    // Register security hooks (audit logging)
+    funcspec.RegisterSecurityHooks(handler, securityList)
+
+    // Note: funcspec operates on raw SQL queries, so row/column
+    // security is limited. Security should be enforced at the
+    // SQL function level or via database policies.
+
+    // Setup routes...
+}
+```
+
+### Example 4: ResolveSpec Security (REST API)
+
+```go
+import (
+    "github.com/bitechdev/ResolveSpec/pkg/resolvespec"
+    "github.com/bitechdev/ResolveSpec/pkg/security"
+)
+
+func main() {
+    db := setupDatabase()
+    registry := common.NewModelRegistry()
+
+    // Register models
+    registry.RegisterModel("public.users", &User{})
+    registry.RegisterModel("public.orders", &Order{})
+
+    // Create resolvespec handler
+    handler := resolvespec.NewHandler(db, registry)
+
+    // Create security providers
+    auth := security.NewDatabaseAuthenticator(db)
+    colSec := security.NewDatabaseColumnSecurityProvider(db)
+    rowSec := security.NewDatabaseRowSecurityProvider(db)
+
+    // Combine providers
+    provider := security.NewCompositeSecurityProvider(auth, colSec, rowSec)
+    securityList := security.NewSecurityList(provider)
+
+    // Register security hooks for resolvespec
+    resolvespec.RegisterSecurityHooks(handler, securityList)
+
+    // Setup routes...
+}
+```
+
+### Example 5: Custom Provider
+
+Implement your own provider for complete control:
+
+```go
+type MySecurityProvider struct {
+    db *gorm.DB
+}
+
+func (p *MySecurityProvider) Login(ctx context.Context, req security.LoginRequest) (*security.LoginResponse, error) {
+    // Your custom login logic
+}
+
+func (p *MySecurityProvider) Logout(ctx context.Context, req security.LogoutRequest) error {
+    // Your custom logout logic
+}
+
+func (p *MySecurityProvider) Authenticate(r *http.Request) (*security.UserContext, error) {
+    // Your custom authentication logic
+}
+
+func (p *MySecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
+    // Your custom column security logic
+}
+
+func (p *MySecurityProvider) GetRowSecurity(ctx context.Context, userID int, schema, table string) (security.RowSecurity, error) {
+    // Your custom row security logic
+}
+
+// Use it with any spec
+provider := &MySecurityProvider{db: db}
+securityList := security.NewSecurityList(provider)
+
+// Register with restheadspec
+restheadspec.RegisterSecurityHooks(restHandler, securityList)
+
+// Or with funcspec
+funcspec.RegisterSecurityHooks(funcHandler, securityList)
+
+// Or with resolvespec
+resolvespec.RegisterSecurityHooks(resolveHandler, securityList)
+```
+
+## Security Features
+
+### Column Security (Masking/Hiding)
+
+**Mask SSN (show last 4 digits):**
+```go
+{
+    Path:       []string{"ssn"},
+    Accesstype: "mask",
+    MaskStart:  5,
+    MaskChar:   "*",
+}
+// "123-45-6789" → "*****6789"
+```
+
+**Hide entire field:**
+```go
+{
+    Path:       []string{"salary"},
+    Accesstype: "hide",
+}
+// Field returns 0 or empty
+```
+
+**Nested JSON field masking:**
+```go
+{
+    Path:       []string{"address", "street"},
+    Accesstype: "mask",
+    MaskStart:  10,
+}
+```
+
+### Row Security (Filtering)
+
+**User isolation:**
+```go
+{
+    Template: "user_id = {UserID}",
+}
+// Users only see their own records
+```
+
+**Tenant isolation:**
+```go
+{
+    Template: "tenant_id = {TenantID} AND user_id = {UserID}",
+}
+```
+
+**Block all access:**
+```go
+{
+    HasBlock: true,
+}
+// Completely blocks access to the table
+```
+
+**Template variables:**
+- `{UserID}` - Current user's ID
+- `{PrimaryKeyName}` - Primary key column
+- `{TableName}` - Table name
+- `{SchemaName}` - Schema name
+
+## Request Flow
+
+```
+HTTP Request
+    ↓
+NewAuthMiddleware (security package)
+    ├─ Calls provider.Authenticate(request)
+    └─ Adds UserContext to context
+    ↓
+SetSecurityMiddleware (security package)
+    └─ Adds SecurityList to context
+    ↓
+Spec Handler (restheadspec/funcspec/resolvespec)
+    ↓
+BeforeRead Hook (registered by spec)
+    ├─ Adapts spec's HookContext → SecurityContext
+    ├─ Calls security.LoadSecurityRules(secCtx, securityList)
+    │   ├─ Calls provider.GetColumnSecurity()
+    │   └─ Calls provider.GetRowSecurity()
+    └─ Caches security rules
+    ↓
+BeforeScan Hook (registered by spec)
+    ├─ Adapts spec's HookContext → SecurityContext
+    ├─ Calls security.ApplyRowSecurity(secCtx, securityList)
+    └─ Applies row security (adds WHERE clause to query)
+    ↓
+Database Query (with security filters)
+    ↓
+AfterRead Hook (registered by spec)
+    ├─ Adapts spec's HookContext → SecurityContext
+    ├─ Calls security.ApplyColumnSecurity(secCtx, securityList)
+    ├─ Applies column security (masks/hides fields)
+    └─ Calls security.LogDataAccess(secCtx)
+    ↓
+HTTP Response (secured data)
+```
+
+**Key Points:**
+- Security package is spec-agnostic and provides core logic
+- Each spec registers its own hooks that adapt to SecurityContext
+- Security rules are loaded once and cached for the request
+- Row security is applied to the query (database level)
+- Column security is applied to results (application level)
+
+## Testing
+
+The interface-based design makes testing straightforward:
+
+```go
+// Mock authenticator for tests
+type MockAuthenticator struct {
+    UserToReturn *security.UserContext
+    ErrorToReturn error
+}
+
+func (m *MockAuthenticator) Authenticate(r *http.Request) (*security.UserContext, error) {
+    return m.UserToReturn, m.ErrorToReturn
+}
+
+// Use in tests
+func TestMyHandler(t *testing.T) {
+    mockAuth := &MockAuthenticator{
+        UserToReturn: &security.UserContext{UserID: 123},
+    }
+
+    provider := security.NewCompositeSecurityProvider(
+        mockAuth,
+        &MockColumnSecurity{},
+        &MockRowSecurity{},
+    )
+
+    securityList := security.SetupSecurityProvider(handler, provider)
+    // ... test your handler
+}
+```
+
+## Migration Guide
+
+### From Old Callback System
+
+If you're upgrading from the old callback-based system:
+
+**Old:**
+```go
+security.GlobalSecurity.AuthenticateCallback = myAuthFunc
+security.GlobalSecurity.LoadColumnSecurityCallback = myColSecFunc
+security.GlobalSecurity.LoadRowSecurityCallback = myRowSecFunc
+security.SetupSecurityProvider(handler, &security.GlobalSecurity)
+```
+
+**New:**
+```go
+// 1. Wrap your functions in a provider
+type MyProvider struct{}
+
+func (p *MyProvider) Authenticate(r *http.Request) (*security.UserContext, error) {
+    userID, roles, err := myAuthFunc(r)
+    return &security.UserContext{UserID: userID, Roles: strings.Split(roles, ",")}, err
+}
+
+func (p *MyProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
+    return myColSecFunc(userID, schema, table)
+}
+
+func (p *MyProvider) GetRowSecurity(ctx context.Context, userID int, schema, table string) (security.RowSecurity, error) {
+    return myRowSecFunc(userID, schema, table)
+}
+
+func (p *MyProvider) Login(ctx context.Context, req security.LoginRequest) (*security.LoginResponse, error) {
+    return nil, fmt.Errorf("not implemented")
+}
+
+func (p *MyProvider) Logout(ctx context.Context, req security.LogoutRequest) error {
+    return nil
+}
+
+// 2. Create security list and register hooks
+provider := &MyProvider{}
+securityList := security.NewSecurityList(provider)
+
+// 3. Register with your spec
+restheadspec.RegisterSecurityHooks(handler, securityList)
+```
+
+### From Old SetupSecurityProvider API
+
+If you're upgrading from the previous interface-based system:
+
+**Old:**
+```go
+securityList := security.SetupSecurityProvider(handler, provider)
+```
+
+**New:**
+```go
+securityList := security.NewSecurityList(provider)
+restheadspec.RegisterSecurityHooks(handler, securityList) // or funcspec/resolvespec
+```
+
+The main changes:
+1. Security package no longer knows about specific spec types
+2. Each spec registers its own security hooks
+3. More flexible - same security provider works with all specs
+
+## Documentation
+
+| File | Description |
+|------|-------------|
+| **QUICK_REFERENCE.md** | Quick reference guide with examples |
+| **INTERFACE_GUIDE.md** | Complete implementation guide |
+| **examples.go** | Working provider implementations |
+| **setup_example.go** | 6 complete integration examples |
+
+## API Reference
+
+### Context Helpers
+
+Get user information from request context:
+
+```go
+userCtx, ok := security.GetUserContext(ctx)
+userID, ok := security.GetUserID(ctx)
+userName, ok := security.GetUserName(ctx)
+userLevel, ok := security.GetUserLevel(ctx)
+sessionID, ok := security.GetSessionID(ctx)
+remoteID, ok := security.GetRemoteID(ctx)
+roles, ok := security.GetUserRoles(ctx)
+email, ok := security.GetUserEmail(ctx)
+```
+
+### Optional Interfaces
+
+Implement these for additional features:
+
+**Refreshable** - Token refresh support:
+```go
+type Refreshable interface {
+    RefreshToken(ctx context.Context, refreshToken string) (*LoginResponse, error)
+}
+```
+
+**Validatable** - Token validation:
+```go
+type Validatable interface {
+    ValidateToken(ctx context.Context, token string) (bool, error)
+}
+```
+
+**Cacheable** - Cache management:
+```go
+type Cacheable interface {
+    ClearCache(ctx context.Context, userID int, schema, table string) error
+}
+```
+
+## Benefits Over Callbacks
+
+| Feature | Old (Callbacks) | New (Interfaces) |
+|---------|----------------|------------------|
+| Type Safety | ❌ Callbacks can be nil | ✅ Compile-time verification |
+| Global State | ❌ GlobalSecurity variable | ✅ Dependency injection |
+| Testability | ⚠️ Need to set globals | ✅ Easy to mock |
+| Composability | ❌ Single provider only | ✅ Mix and match |
+| Login/Logout | ❌ Not supported | ✅ Built-in |
+| Extensibility | ⚠️ Limited | ✅ Optional interfaces |
+
+## Common Patterns
+
+### Caching Security Rules
+
+```go
+type CachedProvider struct {
+    inner security.ColumnSecurityProvider
+    cache *cache.Cache
+}
+
+func (p *CachedProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
+    key := fmt.Sprintf("%d:%s.%s", userID, schema, table)
+    if cached, found := p.cache.Get(key); found {
+        return cached.([]security.ColumnSecurity), nil
+    }
+
+    rules, err := p.inner.GetColumnSecurity(ctx, userID, schema, table)
+    if err == nil {
+        p.cache.Set(key, rules, cache.DefaultExpiration)
+    }
+    return rules, err
+}
+```
+
+### Role-Based Security
+
+```go
+func (p *MyProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]security.ColumnSecurity, error) {
+    userCtx, _ := security.GetUserContext(ctx)
+
+    if contains(userCtx.Roles, "admin") {
+        return []security.ColumnSecurity{}, nil // No restrictions
+    }
+
+    return loadRestrictionsForUser(userID, schema, table), nil
+}
+```
+
+### Multi-Tenant Isolation
+
+```go
+func (p *MyProvider) GetRowSecurity(ctx context.Context, userID int, schema, table string) (security.RowSecurity, error) {
+    tenantID := getUserTenant(userID)
+
+    return security.RowSecurity{
+        Template: fmt.Sprintf("tenant_id = %d AND user_id = {UserID}", tenantID),
+    }, nil
+}
+```
+
+## Middleware and Handler API
+
+### NewAuthMiddleware
+Standard middleware that authenticates all requests:
+
+```go
+router.Use(security.NewAuthMiddleware(securityList))
+```
+
+Routes can skip authentication using the `SkipAuth` helper:
+
+```go
+func PublicHandler(w http.ResponseWriter, r *http.Request) {
+    ctx := security.SkipAuth(r.Context())
+    // This route will bypass authentication
+    // A guest user context will be set instead
+}
+
+router.Handle("/public", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+    ctx := security.SkipAuth(r.Context())
+    PublicHandler(w, r.WithContext(ctx))
+}))
+```
+
+When authentication is skipped, a guest user context is automatically set:
+- UserID: 0
+- UserName: "guest"
+- Roles: ["guest"]
+- RemoteID: Request's remote address
+
+Routes can use optional authentication with the `OptionalAuth` helper:
+
+```go
+func OptionalAuthHandler(w http.ResponseWriter, r *http.Request) {
+    ctx := security.OptionalAuth(r.Context())
+    r = r.WithContext(ctx)
+
+    // This route will try to authenticate
+    // If authentication succeeds, authenticated user context is set
+    // If authentication fails, guest user context is set instead
+
+    userCtx, _ := security.GetUserContext(r.Context())
+    if userCtx.UserID == 0 {
+        // Guest user
+        fmt.Fprintf(w, "Welcome, guest!")
+    } else {
+        // Authenticated user
+        fmt.Fprintf(w, "Welcome back, %s!", userCtx.UserName)
+    }
+}
+
+router.Handle("/home", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+    ctx := security.OptionalAuth(r.Context())
+    OptionalAuthHandler(w, r.WithContext(ctx))
+}))
+```
+
+**Authentication Modes Summary:**
+- **Required (default)**: Authentication must succeed or returns 401
+- **SkipAuth**: Bypasses authentication entirely, always sets guest context
+- **OptionalAuth**: Tries authentication, falls back to guest context if it fails
+
+### NewAuthHandler
+
+Standalone authentication handler (without middleware wrapping):
+
+```go
+// Use when you need authentication logic without middleware
+authHandler := security.NewAuthHandler(securityList, myHandler)
+http.Handle("/api/protected", authHandler)
+```
+
+### NewOptionalAuthHandler
+
+Standalone optional authentication handler that tries to authenticate but falls back to guest:
+
+```go
+// Use for routes that should work for both authenticated and guest users
+optionalHandler := security.NewOptionalAuthHandler(securityList, myHandler)
+http.Handle("/home", optionalHandler)
+
+// Example handler that checks user context
+func myHandler(w http.ResponseWriter, r *http.Request) {
+    userCtx, _ := security.GetUserContext(r.Context())
+    if userCtx.UserID == 0 {
+        fmt.Fprintf(w, "Welcome, guest!")
+    } else {
+        fmt.Fprintf(w, "Welcome back, %s!", userCtx.UserName)
+    }
+}
+```
+
+### Helper Functions
+
+Extract user information from context:
+
+```go
+// Get full user context
+userCtx, ok := security.GetUserContext(ctx)
+
+// Get specific fields
+userID, ok := security.GetUserID(ctx)
+userName, ok := security.GetUserName(ctx)
+userLevel, ok := security.GetUserLevel(ctx)
+sessionID, ok := security.GetSessionID(ctx)
+remoteID, ok := security.GetRemoteID(ctx)
+roles, ok := security.GetUserRoles(ctx)
+email, ok := security.GetUserEmail(ctx)
+meta, ok := security.GetUserMeta(ctx)
+```
+
+### Metadata Support
+
+The `Meta` field in `UserContext` can hold any JSON-serializable values:
+
+```go
+// Set metadata during login
+loginReq := security.LoginRequest{
+    Username: "user@example.com",
+    Password: "password",
+    Meta: map[string]any{
+        "department": "engineering",
+        "location": "US",
+        "preferences": map[string]any{
+            "theme": "dark",
+        },
+    },
+}
+
+// Access metadata in handlers
+meta, ok := security.GetUserMeta(ctx)
+if ok {
+    department := meta["department"].(string)
+}
+```
+
+## License
+
+Part of the ResolveSpec project.

pkg/security/callbacks_example.go

@@ -1,414 +0,0 @@
-package security
-
-import (
-	"fmt"
-	"net/http"
-	"strconv"
-	"strings"
-)
-
-// This file provides example implementations of the required security callbacks.
-// Copy these functions and modify them to match your authentication and database schema.
-
-// =============================================================================
-// EXAMPLE 1: Simple Header-Based Authentication
-// =============================================================================
-
-// ExampleAuthenticateFromHeader extracts user ID from X-User-ID header
-func ExampleAuthenticateFromHeader(r *http.Request) (userID int, roles string, err error) {
-	userIDStr := r.Header.Get("X-User-ID")
-	if userIDStr == "" {
-		return 0, "", fmt.Errorf("X-User-ID header not provided")
-	}
-
-	userID, err = strconv.Atoi(userIDStr)
-	if err != nil {
-		return 0, "", fmt.Errorf("invalid user ID format: %v", err)
-	}
-
-	// Optionally extract roles
-	roles = r.Header.Get("X-User-Roles") // comma-separated: "admin,manager"
-
-	return userID, roles, nil
-}
-
-// =============================================================================
-// EXAMPLE 2: JWT Token Authentication
-// =============================================================================
-
-// ExampleAuthenticateFromJWT parses a JWT token and extracts user info
-// You'll need to import a JWT library like github.com/golang-jwt/jwt/v5
-func ExampleAuthenticateFromJWT(r *http.Request) (userID int, roles string, err error) {
-	authHeader := r.Header.Get("Authorization")
-	if authHeader == "" {
-		return 0, "", fmt.Errorf("authorization header not provided")
-	}
-
-	// Extract Bearer token
-	tokenString := strings.TrimPrefix(authHeader, "Bearer ")
-	if tokenString == authHeader {
-		return 0, "", fmt.Errorf("invalid authorization header format")
-	}
-
-	// TODO: Parse and validate JWT token
-	// Example using github.com/golang-jwt/jwt/v5:
-	//
-	// token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
-	//     return []byte(os.Getenv("JWT_SECRET")), nil
-	// })
-	//
-	// if err != nil || !token.Valid {
-	//     return 0, "", fmt.Errorf("invalid token: %v", err)
-	// }
-	//
-	// claims := token.Claims.(jwt.MapClaims)
-	// userID = int(claims["user_id"].(float64))
-	// roles = claims["roles"].(string)
-
-	return 0, "", fmt.Errorf("JWT parsing not implemented - see example above")
-}
-
-// =============================================================================
-// EXAMPLE 3: Session Cookie Authentication
-// =============================================================================
-
-// ExampleAuthenticateFromSession validates a session cookie
-func ExampleAuthenticateFromSession(r *http.Request) (userID int, roles string, err error) {
-	sessionCookie, err := r.Cookie("session_id")
-	if err != nil {
-		return 0, "", fmt.Errorf("session cookie not found")
-	}
-
-	// TODO: Validate session against your session store (Redis, database, etc.)
-	// Example:
-	//
-	// session, err := sessionStore.Get(sessionCookie.Value)
-	// if err != nil {
-	//     return 0, "", fmt.Errorf("invalid session")
-	// }
-	//
-	// userID = session.UserID
-	// roles = session.Roles
-
-	_ = sessionCookie // Suppress unused warning until implemented
-	return 0, "", fmt.Errorf("session validation not implemented - see example above")
-}
-
-// =============================================================================
-// EXAMPLE 4: Column Security - Database Implementation
-// =============================================================================
-
-// ExampleLoadColumnSecurityFromDatabase loads column security rules from database
-// This implementation assumes the following database schema:
-//
-//	CREATE TABLE core.secacces (
-//	    rid_secacces SERIAL PRIMARY KEY,
-//	    rid_hub INTEGER,
-//	    control TEXT,              -- Format: "schema.table.column"
-//	    accesstype TEXT,           -- "mask" or "hide"
-//	    jsonvalue JSONB            -- Masking configuration
-//	);
-//
-//	CREATE TABLE core.hub_link (
-//	    rid_hub_parent INTEGER,    -- Security group ID
-//	    rid_hub_child INTEGER,     -- User ID
-//	    parent_hubtype TEXT        -- 'secgroup'
-//	);
-func ExampleLoadColumnSecurityFromDatabase(pUserID int, pSchema, pTablename string) ([]ColumnSecurity, error) {
-	colSecList := make([]ColumnSecurity, 0)
-
-	// getExtraFilters := func(pStr string) map[string]string {
-	// 	mp := make(map[string]string, 0)
-	// 	for i, val := range strings.Split(pStr, ",") {
-	// 		if i <= 1 {
-	// 			continue
-	// 		}
-	// 		vals := strings.Split(val, ":")
-	// 		if len(vals) > 1 {
-	// 			mp[vals[0]] = vals[1]
-	// 		}
-	// 	}
-	// 	return mp
-	// }
-
-	// rows, err := DBM.DBConn.Raw(fmt.Sprintf(`
-	// 	SELECT a.rid_secacces, a.control, a.accesstype, a.jsonvalue
-	// 	FROM core.secacces a
-	// 	WHERE a.rid_hub IN (
-	// 		SELECT l.rid_hub_parent
-	// 		FROM core.hub_link l
-	// 		WHERE l.parent_hubtype = 'secgroup'
-	// 			AND l.rid_hub_child = ?
-	// 	)
-	// 	AND control ILIKE '%s.%s%%'
-	// `, pSchema, pTablename), pUserID).Rows()
-
-	// defer func() {
-	// 	if rows != nil {
-	// 		rows.Close()
-	// 	}
-	// }()
-
-	// if err != nil {
-	// 	return colSecList, fmt.Errorf("failed to fetch column security from SQL: %v", err)
-	// }
-
-	// for rows.Next() {
-	// 	var rid int
-	// 	var jsondata []byte
-	// 	var control, accesstype string
-
-	// 	err = rows.Scan(&rid, &control, &accesstype, &jsondata)
-	// 	if err != nil {
-	// 		return colSecList, fmt.Errorf("failed to scan column security: %v", err)
-	// 	}
-
-	// 	parts := strings.Split(control, ",")
-	// 	ids := strings.Split(parts[0], ".")
-	// 	if len(ids) < 3 {
-	// 		continue
-	// 	}
-
-	// 	jsonvalue := make(map[string]interface{})
-	// 	if len(jsondata) > 1 {
-	// 		err = json.Unmarshal(jsondata, &jsonvalue)
-	// 		if err != nil {
-	// 			logger.Error("Failed to parse json: %v", err)
-	// 		}
-	// 	}
-
-	// 	colsec := ColumnSecurity{
-	// 		Schema:       pSchema,
-	// 		Tablename:    pTablename,
-	// 		UserID:       pUserID,
-	// 		Path:         ids[2:],
-	// 		ExtraFilters: getExtraFilters(control),
-	// 		Accesstype:   accesstype,
-	// 		Control:      control,
-	// 		ID:           int(rid),
-	// 	}
-
-	// 	// Parse masking configuration from JSON
-	// 	if v, ok := jsonvalue["start"]; ok {
-	// 		if value, ok := v.(float64); ok {
-	// 			colsec.MaskStart = int(value)
-	// 		}
-	// 	}
-
-	// 	if v, ok := jsonvalue["end"]; ok {
-	// 		if value, ok := v.(float64); ok {
-	// 			colsec.MaskEnd = int(value)
-	// 		}
-	// 	}
-
-	// 	if v, ok := jsonvalue["invert"]; ok {
-	// 		if value, ok := v.(bool); ok {
-	// 			colsec.MaskInvert = value
-	// 		}
-	// 	}
-
-	// 	if v, ok := jsonvalue["char"]; ok {
-	// 		if value, ok := v.(string); ok {
-	// 			colsec.MaskChar = value
-	// 		}
-	// 	}
-
-	// 	colSecList = append(colSecList, colsec)
-	// }
-
-	return colSecList, nil
-}
-
-// =============================================================================
-// EXAMPLE 5: Column Security - In-Memory/Static Configuration
-// =============================================================================
-
-// ExampleLoadColumnSecurityFromConfig loads column security from static config
-func ExampleLoadColumnSecurityFromConfig(pUserID int, pSchema, pTablename string) ([]ColumnSecurity, error) {
-	// Example: Define security rules in code or load from config file
-	securityRules := map[string][]ColumnSecurity{
-		"public.employees": {
-			{
-				Schema:     "public",
-				Tablename:  "employees",
-				Path:       []string{"ssn"},
-				Accesstype: "mask",
-				MaskStart:  5,
-				MaskEnd:    0,
-				MaskChar:   "*",
-			},
-			{
-				Schema:     "public",
-				Tablename:  "employees",
-				Path:       []string{"salary"},
-				Accesstype: "hide",
-			},
-		},
-		"public.customers": {
-			{
-				Schema:     "public",
-				Tablename:  "customers",
-				Path:       []string{"credit_card"},
-				Accesstype: "mask",
-				MaskStart:  12,
-				MaskEnd:    0,
-				MaskChar:   "*",
-			},
-		},
-	}
-
-	key := fmt.Sprintf("%s.%s", pSchema, pTablename)
-	rules, ok := securityRules[key]
-	if !ok {
-		return []ColumnSecurity{}, nil // No rules for this table
-	}
-
-	// Filter by user ID if needed
-	// For this example, all rules apply to all users
-	return rules, nil
-}
-
-// =============================================================================
-// EXAMPLE 6: Row Security - Database Implementation
-// =============================================================================
-
-// ExampleLoadRowSecurityFromDatabase loads row security rules from database
-// This implementation assumes a PostgreSQL function:
-//
-//	CREATE FUNCTION core.api_sec_rowtemplate(
-//	    p_schema TEXT,
-//	    p_table TEXT,
-//	    p_userid INTEGER
-//	) RETURNS TABLE (
-//	    p_retval INTEGER,
-//	    p_errmsg TEXT,
-//	    p_template TEXT,
-//	    p_block BOOLEAN
-//	);
-func ExampleLoadRowSecurityFromDatabase(pUserID int, pSchema, pTablename string) (RowSecurity, error) {
-	record := RowSecurity{
-		Schema:    pSchema,
-		Tablename: pTablename,
-		UserID:    pUserID,
-	}
-
-	// rows, err := DBM.DBConn.Raw(`
-	// 	SELECT r.p_retval, r.p_errmsg, r.p_template, r.p_block
-	// 	FROM core.api_sec_rowtemplate(?, ?, ?) r
-	// `, pSchema, pTablename, pUserID).Rows()
-
-	// defer func() {
-	// 	if rows != nil {
-	// 		rows.Close()
-	// 	}
-	// }()
-
-	// if err != nil {
-	// 	return record, fmt.Errorf("failed to fetch row security from SQL: %v", err)
-	// }
-
-	// for rows.Next() {
-	// 	var retval int
-	// 	var errmsg string
-
-	// 	err = rows.Scan(&retval, &errmsg, &record.Template, &record.HasBlock)
-	// 	if err != nil {
-	// 		return record, fmt.Errorf("failed to scan row security: %v", err)
-	// 	}
-
-	// 	if retval != 0 {
-	// 		return RowSecurity{}, fmt.Errorf("api_sec_rowtemplate error: %s", errmsg)
-	// 	}
-	// }
-
-	return record, nil
-}
-
-// =============================================================================
-// EXAMPLE 7: Row Security - Static Configuration
-// =============================================================================
-
-// ExampleLoadRowSecurityFromConfig loads row security from static config
-func ExampleLoadRowSecurityFromConfig(pUserID int, pSchema, pTablename string) (RowSecurity, error) {
-	// Define row security templates based on entity
-	templates := map[string]string{
-		"public.orders":    "user_id = {UserID}",                                                                     // Users see only their orders
-		"public.documents": "user_id = {UserID} OR is_public = true",                                                 // Users see their docs + public docs
-		"public.employees": "department_id IN (SELECT department_id FROM user_departments WHERE user_id = {UserID})", // Complex filter
-	}
-
-	// Define blocked entities (no access at all)
-	blockedEntities := map[string][]int{
-		"public.admin_logs": {},        // All users blocked (empty list = block all)
-		"public.audit_logs": {1, 2, 3}, // Block users 1, 2, 3
-	}
-
-	key := fmt.Sprintf("%s.%s", pSchema, pTablename)
-
-	// Check if entity is blocked for this user
-	if blockedUsers, ok := blockedEntities[key]; ok {
-		if len(blockedUsers) == 0 {
-			// Block all users
-			return RowSecurity{
-				Schema:    pSchema,
-				Tablename: pTablename,
-				UserID:    pUserID,
-				HasBlock:  true,
-			}, nil
-		}
-		// Check if specific user is blocked
-		for _, blockedUserID := range blockedUsers {
-			if blockedUserID == pUserID {
-				return RowSecurity{
-					Schema:    pSchema,
-					Tablename: pTablename,
-					UserID:    pUserID,
-					HasBlock:  true,
-				}, nil
-			}
-		}
-	}
-
-	// Get template for this entity
-	template, ok := templates[key]
-	if !ok {
-		// No row security defined - allow all rows
-		return RowSecurity{
-			Schema:    pSchema,
-			Tablename: pTablename,
-			UserID:    pUserID,
-			Template:  "",
-			HasBlock:  false,
-		}, nil
-	}
-
-	return RowSecurity{
-		Schema:    pSchema,
-		Tablename: pTablename,
-		UserID:    pUserID,
-		Template:  template,
-		HasBlock:  false,
-	}, nil
-}
-
-// =============================================================================
-// SETUP HELPER: Configure All Callbacks
-// =============================================================================
-
-// SetupCallbacksExample shows how to configure all callbacks
-func SetupCallbacksExample() {
-	// Option 1: Use database-backed security (production)
-	GlobalSecurity.AuthenticateCallback = ExampleAuthenticateFromJWT
-	GlobalSecurity.LoadColumnSecurityCallback = ExampleLoadColumnSecurityFromDatabase
-	GlobalSecurity.LoadRowSecurityCallback = ExampleLoadRowSecurityFromDatabase
-
-	// Option 2: Use static configuration (development/testing)
-	// GlobalSecurity.AuthenticateCallback = ExampleAuthenticateFromHeader
-	// GlobalSecurity.LoadColumnSecurityCallback = ExampleLoadColumnSecurityFromConfig
-	// GlobalSecurity.LoadRowSecurityCallback = ExampleLoadRowSecurityFromConfig
-
-	// Option 3: Mix and match
-	// GlobalSecurity.AuthenticateCallback = ExampleAuthenticateFromJWT
-	// GlobalSecurity.LoadColumnSecurityCallback = ExampleLoadColumnSecurityFromConfig
-	// GlobalSecurity.LoadRowSecurityCallback = ExampleLoadRowSecurityFromDatabase
-}

pkg/security/composite.go

@@ -0,0 +1,105 @@
+package security
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+)
+
+// CompositeSecurityProvider combines multiple security providers
+// Allows separating authentication, column security, and row security concerns
+type CompositeSecurityProvider struct {
+	auth   Authenticator
+	colSec ColumnSecurityProvider
+	rowSec RowSecurityProvider
+}
+
+// NewCompositeSecurityProvider creates a composite provider
+// All parameters are required
+func NewCompositeSecurityProvider(
+	auth Authenticator,
+	colSec ColumnSecurityProvider,
+	rowSec RowSecurityProvider,
+) *CompositeSecurityProvider {
+	if auth == nil {
+		panic("authenticator cannot be nil")
+	}
+	if colSec == nil {
+		panic("column security provider cannot be nil")
+	}
+	if rowSec == nil {
+		panic("row security provider cannot be nil")
+	}
+
+	return &CompositeSecurityProvider{
+		auth:   auth,
+		colSec: colSec,
+		rowSec: rowSec,
+	}
+}
+
+// Login delegates to the authenticator
+func (c *CompositeSecurityProvider) Login(ctx context.Context, req LoginRequest) (*LoginResponse, error) {
+	return c.auth.Login(ctx, req)
+}
+
+// Logout delegates to the authenticator
+func (c *CompositeSecurityProvider) Logout(ctx context.Context, req LogoutRequest) error {
+	return c.auth.Logout(ctx, req)
+}
+
+// Authenticate delegates to the authenticator
+func (c *CompositeSecurityProvider) Authenticate(r *http.Request) (*UserContext, error) {
+	return c.auth.Authenticate(r)
+}
+
+// GetColumnSecurity delegates to the column security provider
+func (c *CompositeSecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]ColumnSecurity, error) {
+	return c.colSec.GetColumnSecurity(ctx, userID, schema, table)
+}
+
+// GetRowSecurity delegates to the row security provider
+func (c *CompositeSecurityProvider) GetRowSecurity(ctx context.Context, userID int, schema, table string) (RowSecurity, error) {
+	return c.rowSec.GetRowSecurity(ctx, userID, schema, table)
+}
+
+// Optional interface implementations (if wrapped providers support them)
+
+// RefreshToken implements Refreshable if the authenticator supports it
+func (c *CompositeSecurityProvider) RefreshToken(ctx context.Context, refreshToken string) (*LoginResponse, error) {
+	if refreshable, ok := c.auth.(Refreshable); ok {
+		return refreshable.RefreshToken(ctx, refreshToken)
+	}
+	return nil, fmt.Errorf("authenticator does not support token refresh")
+}
+
+// ValidateToken implements Validatable if the authenticator supports it
+func (c *CompositeSecurityProvider) ValidateToken(ctx context.Context, token string) (bool, error) {
+	if validatable, ok := c.auth.(Validatable); ok {
+		return validatable.ValidateToken(ctx, token)
+	}
+	return false, fmt.Errorf("authenticator does not support token validation")
+}
+
+// ClearCache implements Cacheable if any provider supports it
+func (c *CompositeSecurityProvider) ClearCache(ctx context.Context, userID int, schema, table string) error {
+	var errs []error
+
+	if cacheable, ok := c.colSec.(Cacheable); ok {
+		if err := cacheable.ClearCache(ctx, userID, schema, table); err != nil {
+			errs = append(errs, fmt.Errorf("column security cache clear failed: %w", err))
+		}
+	}
+
+	if cacheable, ok := c.rowSec.(Cacheable); ok {
+		if err := cacheable.ClearCache(ctx, userID, schema, table); err != nil {
+			errs = append(errs, fmt.Errorf("row security cache clear failed: %w", err))
+		}
+	}
+
+	if len(errs) > 0 {
+		return fmt.Errorf("cache clear errors: %v", errs)
+	}
+
+	return nil
+}

pkg/security/database_schema.sql

@@ -0,0 +1,428 @@
+-- Database Schema for DatabaseAuthenticator
+-- ============================================
+
+-- Users table
+CREATE TABLE IF NOT EXISTS users (
+    id SERIAL PRIMARY KEY,
+    username VARCHAR(255) NOT NULL UNIQUE,
+    email VARCHAR(255) NOT NULL UNIQUE,
+    password VARCHAR(255) NOT NULL, -- bcrypt hashed password
+    user_level INTEGER DEFAULT 0,
+    roles VARCHAR(500), -- Comma-separated roles: "admin,manager,user"
+    is_active BOOLEAN DEFAULT true,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    last_login_at TIMESTAMP
+);
+
+-- User sessions table for DatabaseAuthenticator
+CREATE TABLE IF NOT EXISTS user_sessions (
+    id SERIAL PRIMARY KEY,
+    session_token VARCHAR(500) NOT NULL UNIQUE,
+    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    expires_at TIMESTAMP NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    last_activity_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    ip_address VARCHAR(45), -- IPv4 or IPv6
+    user_agent TEXT
+);
+
+CREATE INDEX IF NOT EXISTS idx_session_token ON user_sessions(session_token);
+CREATE INDEX IF NOT EXISTS idx_user_id ON user_sessions(user_id);
+CREATE INDEX IF NOT EXISTS idx_expires_at ON user_sessions(expires_at);
+
+-- Optional: Token blacklist for logout tracking (useful for JWT too)
+CREATE TABLE IF NOT EXISTS token_blacklist (
+    id SERIAL PRIMARY KEY,
+    token VARCHAR(500) NOT NULL,
+    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    expires_at TIMESTAMP NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_token ON token_blacklist(token);
+CREATE INDEX IF NOT EXISTS idx_blacklist_expires_at ON token_blacklist(expires_at);
+
+-- Example: Seed admin user (password should be hashed with bcrypt)
+-- INSERT INTO users (username, email, password, user_level, roles, is_active)
+-- VALUES ('admin', 'admin@example.com', '$2a$10$...', 10, 'admin,user', true);
+
+-- Cleanup expired sessions (run periodically)
+-- DELETE FROM user_sessions WHERE expires_at < NOW();
+
+-- Cleanup expired blacklisted tokens (run periodically)
+-- DELETE FROM token_blacklist WHERE expires_at < NOW();
+
+-- ============================================
+-- Stored Procedures for DatabaseAuthenticator
+-- ============================================
+
+-- 1. resolvespec_login - Authenticates user and creates session
+-- Input: LoginRequest as jsonb {username: string, password: string, claims: object}
+-- Output: p_success (bool), p_error (text), p_data (LoginResponse as jsonb)
+CREATE OR REPLACE FUNCTION resolvespec_login(p_request jsonb)
+RETURNS TABLE(p_success boolean, p_error text, p_data jsonb) AS $$
+DECLARE
+    v_user_id INTEGER;
+    v_username TEXT;
+    v_email TEXT;
+    v_user_level INTEGER;
+    v_roles TEXT;
+    v_password_hash TEXT;
+    v_session_token TEXT;
+    v_expires_at TIMESTAMP;
+    v_ip_address TEXT;
+    v_user_agent TEXT;
+BEGIN
+    -- Extract login request fields
+    v_username := p_request->>'username';
+    v_ip_address := p_request->'claims'->>'ip_address';
+    v_user_agent := p_request->'claims'->>'user_agent';
+
+    -- Validate user credentials
+    SELECT id, username, email, password, user_level, roles
+    INTO v_user_id, v_username, v_email, v_password_hash, v_user_level, v_roles
+    FROM users
+    WHERE username = v_username AND is_active = true;
+
+    IF NOT FOUND THEN
+        RETURN QUERY SELECT false, 'Invalid credentials'::text, NULL::jsonb;
+        RETURN;
+    END IF;
+
+    -- TODO: Verify password hash using pgcrypto extension
+    -- Enable pgcrypto: CREATE EXTENSION IF NOT EXISTS pgcrypto;
+    -- IF NOT (crypt(p_request->>'password', v_password_hash) = v_password_hash) THEN
+    --     RETURN QUERY SELECT false, 'Invalid credentials'::text, NULL::jsonb;
+    --     RETURN;
+    -- END IF;
+
+    -- Generate session token
+    v_session_token := 'sess_' || encode(gen_random_bytes(32), 'hex') || '_' || extract(epoch from now())::bigint::text;
+    v_expires_at := now() + interval '24 hours';
+
+    -- Create session
+    INSERT INTO user_sessions (session_token, user_id, expires_at, ip_address, user_agent, last_activity_at)
+    VALUES (v_session_token, v_user_id, v_expires_at, v_ip_address, v_user_agent, now());
+
+    -- Update last login time
+    UPDATE users SET last_login_at = now() WHERE id = v_user_id;
+
+    -- Return success with LoginResponse
+    RETURN QUERY SELECT
+        true,
+        NULL::text,
+        jsonb_build_object(
+            'token', v_session_token,
+            'user', jsonb_build_object(
+                'user_id', v_user_id,
+                'user_name', v_username,
+                'email', v_email,
+                'user_level', v_user_level,
+                'roles', string_to_array(COALESCE(v_roles, ''), ','),
+                'session_id', v_session_token
+            ),
+            'expires_in', 86400 -- 24 hours in seconds
+        );
+END;
+$$ LANGUAGE plpgsql;
+
+-- 2. resolvespec_logout - Invalidates session
+-- Input: LogoutRequest as jsonb {token: string, user_id: int}
+-- Output: p_success (bool), p_error (text), p_data (jsonb)
+CREATE OR REPLACE FUNCTION resolvespec_logout(p_request jsonb)
+RETURNS TABLE(p_success boolean, p_error text, p_data jsonb) AS $$
+DECLARE
+    v_token TEXT;
+    v_user_id INTEGER;
+    v_deleted INTEGER;
+BEGIN
+    v_token := p_request->>'token';
+    v_user_id := (p_request->>'user_id')::integer;
+
+    -- Remove Bearer prefix if present
+    v_token := regexp_replace(v_token, '^Bearer ', '', 'i');
+
+    -- Delete the session
+    DELETE FROM user_sessions
+    WHERE session_token = v_token AND user_id = v_user_id;
+
+    GET DIAGNOSTICS v_deleted = ROW_COUNT;
+
+    IF v_deleted = 0 THEN
+        RETURN QUERY SELECT false, 'Session not found'::text, NULL::jsonb;
+    ELSE
+        RETURN QUERY SELECT true, NULL::text, jsonb_build_object('success', true);
+    END IF;
+END;
+$$ LANGUAGE plpgsql;
+
+-- 3. resolvespec_session - Validates session and returns user context
+-- Input: sessionid (text), reference (text)
+-- Output: p_success (bool), p_error (text), p_user (UserContext as jsonb)
+CREATE OR REPLACE FUNCTION resolvespec_session(p_session_token text, p_reference text)
+RETURNS TABLE(p_success boolean, p_error text, p_user jsonb) AS $$
+DECLARE
+    v_user_id INTEGER;
+    v_username TEXT;
+    v_email TEXT;
+    v_user_level INTEGER;
+    v_roles TEXT;
+    v_session_id TEXT;
+BEGIN
+    -- Query session and user data
+    SELECT
+        s.user_id, u.username, u.email, u.user_level, u.roles, s.session_token
+    INTO
+        v_user_id, v_username, v_email, v_user_level, v_roles, v_session_id
+    FROM user_sessions s
+    JOIN users u ON s.user_id = u.id
+    WHERE s.session_token = p_session_token
+      AND s.expires_at > now()
+      AND u.is_active = true;
+
+    IF NOT FOUND THEN
+        RETURN QUERY SELECT false, 'Invalid or expired session'::text, NULL::jsonb;
+        RETURN;
+    END IF;
+
+    -- Return UserContext
+    RETURN QUERY SELECT
+        true,
+        NULL::text,
+        jsonb_build_object(
+            'user_id', v_user_id,
+            'user_name', v_username,
+            'email', v_email,
+            'user_level', v_user_level,
+            'session_id', v_session_id,
+            'roles', string_to_array(COALESCE(v_roles, ''), ',')
+        );
+END;
+$$ LANGUAGE plpgsql;
+
+-- 4. resolvespec_session_update - Updates session activity timestamp
+-- Input: sessionid (text), user_context (jsonb)
+-- Output: p_success (bool), p_error (text), p_user (UserContext as jsonb)
+CREATE OR REPLACE FUNCTION resolvespec_session_update(p_session_token text, p_user_context jsonb)
+RETURNS TABLE(p_success boolean, p_error text, p_user jsonb) AS $$
+DECLARE
+    v_updated INTEGER;
+BEGIN
+    -- Update last activity timestamp
+    UPDATE user_sessions
+    SET last_activity_at = now()
+    WHERE session_token = p_session_token AND expires_at > now();
+
+    GET DIAGNOSTICS v_updated = ROW_COUNT;
+
+    IF v_updated = 0 THEN
+        RETURN QUERY SELECT false, 'Session not found or expired'::text, NULL::jsonb;
+    ELSE
+        -- Return the user context as-is
+        RETURN QUERY SELECT true, NULL::text, p_user_context;
+    END IF;
+END;
+$$ LANGUAGE plpgsql;
+
+-- 5. resolvespec_refresh_token - Generates new session from existing one
+-- Input: sessionid (text), user_context (jsonb)
+-- Output: p_success (bool), p_error (text), p_user (UserContext as jsonb with new session_id)
+CREATE OR REPLACE FUNCTION resolvespec_refresh_token(p_old_session_token text, p_user_context jsonb)
+RETURNS TABLE(p_success boolean, p_error text, p_user jsonb) AS $$
+DECLARE
+    v_user_id INTEGER;
+    v_username TEXT;
+    v_email TEXT;
+    v_user_level INTEGER;
+    v_roles TEXT;
+    v_new_session_token TEXT;
+    v_expires_at TIMESTAMP;
+    v_ip_address TEXT;
+    v_user_agent TEXT;
+BEGIN
+    -- Verify old session exists and is valid
+    SELECT s.user_id, u.username, u.email, u.user_level, u.roles, s.ip_address, s.user_agent
+    INTO v_user_id, v_username, v_email, v_user_level, v_roles, v_ip_address, v_user_agent
+    FROM user_sessions s
+    JOIN users u ON s.user_id = u.id
+    WHERE s.session_token = p_old_session_token
+      AND s.expires_at > now()
+      AND u.is_active = true;
+
+    IF NOT FOUND THEN
+        RETURN QUERY SELECT false, 'Invalid or expired refresh token'::text, NULL::jsonb;
+        RETURN;
+    END IF;
+
+    -- Generate new session token
+    v_new_session_token := 'sess_' || encode(gen_random_bytes(32), 'hex') || '_' || extract(epoch from now())::bigint::text;
+    v_expires_at := now() + interval '24 hours';
+
+    -- Create new session
+    INSERT INTO user_sessions (session_token, user_id, expires_at, ip_address, user_agent, last_activity_at)
+    VALUES (v_new_session_token, v_user_id, v_expires_at, v_ip_address, v_user_agent, now());
+
+    -- Delete old session
+    DELETE FROM user_sessions WHERE session_token = p_old_session_token;
+
+    -- Return UserContext with new session_id
+    RETURN QUERY SELECT
+        true,
+        NULL::text,
+        jsonb_build_object(
+            'user_id', v_user_id,
+            'user_name', v_username,
+            'email', v_email,
+            'user_level', v_user_level,
+            'session_id', v_new_session_token,
+            'roles', string_to_array(COALESCE(v_roles, ''), ',')
+        );
+END;
+$$ LANGUAGE plpgsql;
+
+-- 6. resolvespec_jwt_login - JWT-based login (queries user and returns data for JWT token generation)
+-- Input: username (text), password (text)
+-- Output: p_success (bool), p_error (text), p_user (user data as jsonb)
+CREATE OR REPLACE FUNCTION resolvespec_jwt_login(p_username text, p_password text)
+RETURNS TABLE(p_success boolean, p_error text, p_user jsonb) AS $$
+DECLARE
+    v_user_id INTEGER;
+    v_username TEXT;
+    v_email TEXT;
+    v_password TEXT;
+    v_user_level INTEGER;
+    v_roles TEXT;
+BEGIN
+    -- Query user data
+    SELECT id, username, email, password, user_level, roles
+    INTO v_user_id, v_username, v_email, v_password, v_user_level, v_roles
+    FROM users
+    WHERE username = p_username AND is_active = true;
+
+    IF NOT FOUND THEN
+        RETURN QUERY SELECT false, 'Invalid credentials'::text, NULL::jsonb;
+        RETURN;
+    END IF;
+
+    -- TODO: Verify password hash
+    -- IF NOT (crypt(p_password, v_password) = v_password) THEN
+    --     RETURN QUERY SELECT false, 'Invalid credentials'::text, NULL::jsonb;
+    --     RETURN;
+    -- END IF;
+
+    -- Return user data for JWT token generation
+    RETURN QUERY SELECT
+        true,
+        NULL::text,
+        jsonb_build_object(
+            'id', v_user_id,
+            'username', v_username,
+            'email', v_email,
+            'password', v_password,
+            'user_level', v_user_level,
+            'roles', v_roles
+        );
+END;
+$$ LANGUAGE plpgsql;
+
+-- 7. resolvespec_jwt_logout - Adds token to blacklist
+-- Input: token (text), user_id (int)
+-- Output: p_success (bool), p_error (text)
+CREATE OR REPLACE FUNCTION resolvespec_jwt_logout(p_token text, p_user_id integer)
+RETURNS TABLE(p_success boolean, p_error text) AS $$
+BEGIN
+    -- Add token to blacklist
+    INSERT INTO token_blacklist (token, user_id, expires_at)
+    VALUES (p_token, p_user_id, now() + interval '24 hours');
+
+    RETURN QUERY SELECT true, NULL::text;
+EXCEPTION
+    WHEN OTHERS THEN
+        RETURN QUERY SELECT false, SQLERRM::text;
+END;
+$$ LANGUAGE plpgsql;
+
+-- 8. resolvespec_column_security - Loads column security rules for user
+-- Input: user_id (int), schema (text), table_name (text)
+-- Output: p_success (bool), p_error (text), p_rules (array of security rules as jsonb)
+CREATE OR REPLACE FUNCTION resolvespec_column_security(p_user_id integer, p_schema text, p_table_name text)
+RETURNS TABLE(p_success boolean, p_error text, p_rules jsonb) AS $$
+DECLARE
+    v_rules jsonb;
+BEGIN
+    -- Query column security rules from core.secaccess
+    SELECT jsonb_agg(
+        jsonb_build_object(
+            'control', control,
+            'accesstype', accesstype,
+            'jsonvalue', jsonvalue
+        )
+    )
+    INTO v_rules
+    FROM core.secaccess
+    WHERE rid_hub IN (
+        SELECT rid_hub_parent
+        FROM core.hub_link
+        WHERE rid_hub_child = p_user_id AND parent_hubtype = 'secgroup'
+    )
+    AND control ILIKE (p_schema || '.' || p_table_name || '%');
+
+    IF v_rules IS NULL THEN
+        v_rules := '[]'::jsonb;
+    END IF;
+
+    RETURN QUERY SELECT true, NULL::text, v_rules;
+EXCEPTION
+    WHEN OTHERS THEN
+        RETURN QUERY SELECT false, SQLERRM::text, '[]'::jsonb;
+END;
+$$ LANGUAGE plpgsql;
+
+-- 9. resolvespec_row_security - Loads row security template for user (replaces core.api_sec_rowtemplate)
+-- Input: schema (text), table_name (text), user_id (int)
+-- Output: p_template (text), p_block (bool)
+CREATE OR REPLACE FUNCTION resolvespec_row_security(p_schema text, p_table_name text, p_user_id integer)
+RETURNS TABLE(p_template text, p_block boolean) AS $$
+BEGIN
+    -- Call the existing core function if it exists, or implement your own logic
+    -- This is a placeholder that you should customize based on your core.api_sec_rowtemplate logic
+    RETURN QUERY SELECT ''::text, false;
+
+    -- Example implementation:
+    -- RETURN QUERY SELECT template, has_block
+    -- FROM core.row_security_config
+    -- WHERE schema_name = p_schema AND table_name = p_table_name AND user_id = p_user_id;
+END;
+$$ LANGUAGE plpgsql;
+
+-- ============================================
+-- Example: Test stored procedures
+-- ============================================
+
+-- Test login
+-- SELECT * FROM resolvespec_login('{"username": "admin", "password": "test123", "claims": {"ip_address": "127.0.0.1", "user_agent": "test"}}'::jsonb);
+
+-- Test session validation
+-- SELECT * FROM resolvespec_session('sess_abc123', 'test_reference');
+
+-- Test session update
+-- SELECT * FROM resolvespec_session_update('sess_abc123', '{"user_id": 1, "user_name": "admin"}'::jsonb);
+
+-- Test token refresh
+-- SELECT * FROM resolvespec_refresh_token('sess_abc123', '{"user_id": 1, "user_name": "admin"}'::jsonb);
+
+-- Test logout
+-- SELECT * FROM resolvespec_logout('{"token": "sess_abc123", "user_id": 1}'::jsonb);
+
+-- Test JWT login
+-- SELECT * FROM resolvespec_jwt_login('admin', 'password123');
+
+-- Test JWT logout
+-- SELECT * FROM resolvespec_jwt_logout('jwt_token_here', 1);
+
+-- Test column security
+-- SELECT * FROM resolvespec_column_security(1, 'public', 'users');
+
+-- Test row security
+-- SELECT * FROM resolvespec_row_security('public', 'users', 1);

pkg/security/examples.go

@@ -0,0 +1,391 @@
+package security
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	// Optional: Uncomment if you want to use JWT authentication
+	// "github.com/golang-jwt/jwt/v5"
+	"gorm.io/gorm"
+)
+
+// Example 1: Simple Header-Based Authenticator
+// =============================================
+
+type HeaderAuthenticatorExample struct {
+	// Optional: Add any dependencies here (e.g., database, cache)
+}
+
+func NewHeaderAuthenticatorExample() *HeaderAuthenticatorExample {
+	return &HeaderAuthenticatorExample{}
+}
+
+func (a *HeaderAuthenticatorExample) Login(ctx context.Context, req LoginRequest) (*LoginResponse, error) {
+	// For header-based auth, login might not be used
+	// Could validate credentials against a database here
+	return nil, fmt.Errorf("header authentication does not support login")
+}
+
+func (a *HeaderAuthenticatorExample) Logout(ctx context.Context, req LogoutRequest) error {
+	// For header-based auth, logout is a no-op
+	return nil
+}
+
+func (a *HeaderAuthenticatorExample) Authenticate(r *http.Request) (*UserContext, error) {
+	userIDStr := r.Header.Get("X-User-ID")
+	if userIDStr == "" {
+		return nil, fmt.Errorf("X-User-ID header required")
+	}
+
+	userID, err := strconv.Atoi(userIDStr)
+	if err != nil {
+		return nil, fmt.Errorf("invalid user ID: %w", err)
+	}
+
+	return &UserContext{
+		UserID:    userID,
+		UserName:  r.Header.Get("X-User-Name"),
+		UserLevel: parseIntHeader(r, "X-User-Level", 0),
+		SessionID: r.Header.Get("X-Session-ID"),
+		RemoteID:  r.Header.Get("X-Remote-ID"),
+		Email:     r.Header.Get("X-User-Email"),
+		Roles:     parseRoles(r.Header.Get("X-User-Roles")),
+		Claims:    make(map[string]any),
+		Meta:      make(map[string]any),
+	}, nil
+}
+
+// Example 2: JWT Token Authenticator
+// ====================================
+// NOTE: To use this, uncomment the jwt import and install: go get github.com/golang-jwt/jwt/v5
+
+type JWTAuthenticatorExample struct {
+	secretKey []byte
+	db        *gorm.DB
+}
+
+func NewJWTAuthenticatorExample(secretKey string, db *gorm.DB) *JWTAuthenticatorExample {
+	return &JWTAuthenticatorExample{
+		secretKey: []byte(secretKey),
+		db:        db,
+	}
+}
+
+func (a *JWTAuthenticatorExample) Login(ctx context.Context, req LoginRequest) (*LoginResponse, error) {
+	// Validate credentials against database
+	var user struct {
+		ID        int
+		Username  string
+		Email     string
+		Password  string // Should be hashed
+		UserLevel int
+		Roles     string
+	}
+
+	err := a.db.WithContext(ctx).
+		Table("users").
+		Where("username = ?", req.Username).
+		First(&user).Error
+	if err != nil {
+		return nil, fmt.Errorf("invalid credentials")
+	}
+
+	// TODO: Verify password hash
+	// if !verifyPassword(user.Password, req.Password) {
+	//     return nil, fmt.Errorf("invalid credentials")
+	// }
+
+	// Create JWT token
+	expiresAt := time.Now().Add(24 * time.Hour)
+
+	// Uncomment when using JWT:
+	// token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
+	//     "user_id":    user.ID,
+	//     "username":   user.Username,
+	//     "email":      user.Email,
+	//     "user_level": user.UserLevel,
+	//     "roles":      user.Roles,
+	//     "exp":        expiresAt.Unix(),
+	// })
+	// tokenString, err := token.SignedString(a.secretKey)
+	// if err != nil {
+	//     return nil, fmt.Errorf("failed to generate token: %w", err)
+	// }
+
+	// Placeholder token for example (replace with actual JWT)
+	tokenString := fmt.Sprintf("token_%d_%d", user.ID, expiresAt.Unix())
+
+	return &LoginResponse{
+		Token: tokenString,
+		User: &UserContext{
+			UserID:    user.ID,
+			UserName:  user.Username,
+			Email:     user.Email,
+			UserLevel: user.UserLevel,
+			Roles:     parseRoles(user.Roles),
+			Claims:    req.Claims,
+			Meta:      req.Meta,
+		},
+		ExpiresIn: int64(24 * time.Hour.Seconds()),
+	}, nil
+}
+
+func (a *JWTAuthenticatorExample) Logout(ctx context.Context, req LogoutRequest) error {
+	// For JWT, logout could involve token blacklisting
+	// Add token to blacklist table
+	// err := a.db.WithContext(ctx).Table("token_blacklist").Create(map[string]interface{}{
+	//     "token":      req.Token,
+	//     "expires_at": time.Now().Add(24 * time.Hour),
+	// }).Error
+	return nil
+}
+
+func (a *JWTAuthenticatorExample) Authenticate(r *http.Request) (*UserContext, error) {
+	authHeader := r.Header.Get("Authorization")
+	if authHeader == "" {
+		return nil, fmt.Errorf("authorization header required")
+	}
+
+	tokenString := strings.TrimPrefix(authHeader, "Bearer ")
+	if tokenString == authHeader {
+		return nil, fmt.Errorf("bearer token required")
+	}
+
+	// Uncomment when using JWT:
+	// token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+	//     if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+	//         return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
+	//     }
+	//     return a.secretKey, nil
+	// })
+	//
+	// if err != nil || !token.Valid {
+	//     return nil, fmt.Errorf("invalid token: %w", err)
+	// }
+	//
+	// claims, ok := token.Claims.(jwt.MapClaims)
+	// if !ok {
+	//     return nil, fmt.Errorf("invalid token claims")
+	// }
+	//
+	// return &UserContext{
+	//     UserID:    int(claims["user_id"].(float64)),
+	//     UserName:  getString(claims, "username"),
+	//     Email:     getString(claims, "email"),
+	//     UserLevel: getInt(claims, "user_level"),
+	//     Roles:     parseRoles(getString(claims, "roles")),
+	//     Claims:    claims,
+	// }, nil
+
+	// Placeholder implementation (replace with actual JWT parsing)
+	return nil, fmt.Errorf("JWT parsing not implemented - uncomment JWT code above")
+}
+
+// Example 3: Database Session Authenticator
+// ==========================================
+
+type DatabaseAuthenticatorExample struct {
+	db *gorm.DB
+}
+
+func NewDatabaseAuthenticatorExample(db *gorm.DB) *DatabaseAuthenticatorExample {
+	return &DatabaseAuthenticatorExample{db: db}
+}
+
+func (a *DatabaseAuthenticatorExample) Login(ctx context.Context, req LoginRequest) (*LoginResponse, error) {
+	// Query user from database
+	var user struct {
+		ID        int
+		Username  string
+		Email     string
+		Password  string // Should be hashed with bcrypt
+		UserLevel int
+		Roles     string
+		IsActive  bool
+	}
+
+	err := a.db.WithContext(ctx).
+		Table("users").
+		Where("username = ? AND is_active = true", req.Username).
+		First(&user).Error
+	if err != nil {
+		return nil, fmt.Errorf("invalid credentials")
+	}
+
+	// TODO: Verify password with bcrypt
+	// if err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(req.Password)); err != nil {
+	//     return nil, fmt.Errorf("invalid credentials")
+	// }
+
+	// Generate session token
+	sessionToken := fmt.Sprintf("sess_%s_%d", generateRandomString(32), time.Now().Unix())
+	expiresAt := time.Now().Add(24 * time.Hour)
+
+	// Create session in database
+	err = a.db.WithContext(ctx).Table("user_sessions").Create(map[string]any{
+		"session_token": sessionToken,
+		"user_id":       user.ID,
+		"expires_at":    expiresAt,
+		"created_at":    time.Now(),
+		"ip_address":    req.Claims["ip_address"],
+		"user_agent":    req.Claims["user_agent"],
+	}).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to create session: %w", err)
+	}
+
+	return &LoginResponse{
+		Token: sessionToken,
+		User: &UserContext{
+			UserID:    user.ID,
+			UserName:  user.Username,
+			Email:     user.Email,
+			UserLevel: user.UserLevel,
+			Roles:     parseRoles(user.Roles),
+			SessionID: sessionToken,
+			Claims:    req.Claims,
+			Meta:      req.Meta,
+		},
+		ExpiresIn: int64(24 * time.Hour.Seconds()),
+	}, nil
+}
+
+func (a *DatabaseAuthenticatorExample) Logout(ctx context.Context, req LogoutRequest) error {
+	// Delete session from database
+	err := a.db.WithContext(ctx).
+		Table("user_sessions").
+		Where("session_token = ? AND user_id = ?", req.Token, req.UserID).
+		Delete(nil).Error
+	if err != nil {
+		return fmt.Errorf("failed to delete session: %w", err)
+	}
+
+	return nil
+}
+
+func (a *DatabaseAuthenticatorExample) Authenticate(r *http.Request) (*UserContext, error) {
+	// Extract session token from header or cookie
+	sessionToken := r.Header.Get("Authorization")
+	if sessionToken == "" {
+		// Try cookie
+		cookie, err := r.Cookie("session_token")
+		if err == nil {
+			sessionToken = cookie.Value
+		}
+	} else {
+		// Remove "Bearer " prefix if present
+		sessionToken = strings.TrimPrefix(sessionToken, "Bearer ")
+	}
+
+	if sessionToken == "" {
+		return nil, fmt.Errorf("session token required")
+	}
+
+	// Query session and user from database
+	var session struct {
+		SessionToken string
+		UserID       int
+		ExpiresAt    time.Time
+		Username     string
+		Email        string
+		UserLevel    int
+		Roles        string
+	}
+
+	query := `
+		SELECT
+			s.session_token,
+			s.user_id,
+			s.expires_at,
+			u.username,
+			u.email,
+			u.user_level,
+			u.roles
+		FROM user_sessions s
+		JOIN users u ON s.user_id = u.id
+		WHERE s.session_token = ?
+		  AND s.expires_at > ?
+		  AND u.is_active = true
+	`
+
+	err := a.db.Raw(query, sessionToken, time.Now()).Scan(&session).Error
+	if err != nil {
+		return nil, fmt.Errorf("invalid or expired session")
+	}
+
+	// Update last activity timestamp
+	go a.updateSessionActivity(sessionToken)
+
+	return &UserContext{
+		UserID:    session.UserID,
+		UserName:  session.Username,
+		Email:     session.Email,
+		UserLevel: session.UserLevel,
+		SessionID: sessionToken,
+		Roles:     parseRoles(session.Roles),
+		Claims:    make(map[string]any),
+		Meta:      make(map[string]any),
+	}, nil
+}
+
+// updateSessionActivity updates the last activity timestamp for the session
+func (a *DatabaseAuthenticatorExample) updateSessionActivity(sessionToken string) {
+	a.db.Table("user_sessions").
+		Where("session_token = ?", sessionToken).
+		Update("last_activity_at", time.Now())
+}
+
+// Optional: Implement Refreshable interface
+func (a *DatabaseAuthenticatorExample) RefreshToken(ctx context.Context, refreshToken string) (*LoginResponse, error) {
+	// Query the refresh token
+	var session struct {
+		UserID   int
+		Username string
+		Email    string
+	}
+
+	err := a.db.WithContext(ctx).Raw(`
+		SELECT u.id as user_id, u.username, u.email
+		FROM user_sessions s
+		JOIN users u ON s.user_id = u.id
+		WHERE s.session_token = ? AND s.expires_at > ?
+	`, refreshToken, time.Now()).Scan(&session).Error
+	if err != nil {
+		return nil, fmt.Errorf("invalid refresh token")
+	}
+
+	// Generate new session token
+	newSessionToken := fmt.Sprintf("sess_%s_%d", generateRandomString(32), time.Now().Unix())
+	expiresAt := time.Now().Add(24 * time.Hour)
+
+	// Create new session
+	err = a.db.WithContext(ctx).Table("user_sessions").Create(map[string]any{
+		"session_token": newSessionToken,
+		"user_id":       session.UserID,
+		"expires_at":    expiresAt,
+		"created_at":    time.Now(),
+	}).Error
+	if err != nil {
+		return nil, fmt.Errorf("failed to create new session: %w", err)
+	}
+
+	// Delete old session
+	a.db.WithContext(ctx).Table("user_sessions").Where("session_token = ?", refreshToken).Delete(nil)
+
+	return &LoginResponse{
+		Token: newSessionToken,
+		User: &UserContext{
+			UserID:    session.UserID,
+			UserName:  session.Username,
+			Email:     session.Email,
+			SessionID: newSessionToken,
+			Claims:    make(map[string]any),
+			Meta:      make(map[string]any),
+		},
+		ExpiresIn: int64(24 * time.Hour.Seconds()),
+	}, nil
+}

pkg/security/hooks.go

@@ -1,59 +1,51 @@
 package security
 
 import (
+	"context"
 	"fmt"
 	"reflect"
 
 	"github.com/bitechdev/ResolveSpec/pkg/logger"
-	"github.com/bitechdev/ResolveSpec/pkg/restheadspec"
 )
 
-// RegisterSecurityHooks registers all security-related hooks with the handler
-func RegisterSecurityHooks(handler *restheadspec.Handler, securityList *SecurityList) {
-
-	// Hook 1: BeforeRead - Load security rules
-	handler.Hooks().Register(restheadspec.BeforeRead, func(hookCtx *restheadspec.HookContext) error {
-		return loadSecurityRules(hookCtx, securityList)
-	})
-
-	// Hook 2: BeforeScan - Apply row-level security filters
-	handler.Hooks().Register(restheadspec.BeforeScan, func(hookCtx *restheadspec.HookContext) error {
-		return applyRowSecurity(hookCtx, securityList)
-	})
-
-	// Hook 3: AfterRead - Apply column-level security (masking)
-	handler.Hooks().Register(restheadspec.AfterRead, func(hookCtx *restheadspec.HookContext) error {
-		return applyColumnSecurity(hookCtx, securityList)
-	})
-
-	// Hook 4 (Optional): Audit logging
-	handler.Hooks().Register(restheadspec.AfterRead, logDataAccess)
+// SecurityContext is a generic interface that any spec can implement to integrate with security features
+// This interface abstracts the common security context needs across different specs
+type SecurityContext interface {
+	GetContext() context.Context
+	GetUserID() (int, bool)
+	GetSchema() string
+	GetEntity() string
+	GetModel() interface{}
+	GetQuery() interface{}
+	SetQuery(interface{})
+	GetResult() interface{}
+	SetResult(interface{})
 }
 
-// loadSecurityRules loads security configuration for the user and entity
-func loadSecurityRules(hookCtx *restheadspec.HookContext, securityList *SecurityList) error {
+// loadSecurityRules loads security configuration for the user and entity (generic version)
+func loadSecurityRules(secCtx SecurityContext, securityList *SecurityList) error {
 	// Extract user ID from context
-	userID, ok := GetUserID(hookCtx.Context)
+	userID, ok := secCtx.GetUserID()
 	if !ok {
 		logger.Warn("No user ID in context for security check")
-		return fmt.Errorf("authentication required")
+		return nil
 	}
 
-	schema := hookCtx.Schema
-	tablename := hookCtx.Entity
+	schema := secCtx.GetSchema()
+	tablename := secCtx.GetEntity()
 
 	logger.Debug("Loading security rules for user=%d, schema=%s, table=%s", userID, schema, tablename)
 
-	// Load column security rules from database
-	err := securityList.LoadColumnSecurity(userID, schema, tablename, false)
+	// Load column security rules using the provider
+	err := securityList.LoadColumnSecurity(secCtx.GetContext(), userID, schema, tablename, false)
 	if err != nil {
 		logger.Warn("Failed to load column security: %v", err)
 		// Don't fail the request if no security rules exist
 		// return err
 	}
 
-	// Load row security rules from database
-	_, err = securityList.LoadRowSecurity(userID, schema, tablename, false)
+	// Load row security rules using the provider
+	_, err = securityList.LoadRowSecurity(secCtx.GetContext(), userID, schema, tablename, false)
 	if err != nil {
 		logger.Warn("Failed to load row security: %v", err)
 		// Don't fail the request if no security rules exist
@@ -63,15 +55,15 @@ func loadSecurityRules(hookCtx *restheadspec.HookContext, securityList *Security
 	return nil
 }
 
-// applyRowSecurity applies row-level security filters to the query
-func applyRowSecurity(hookCtx *restheadspec.HookContext, securityList *SecurityList) error {
-	userID, ok := GetUserID(hookCtx.Context)
+// applyRowSecurity applies row-level security filters to the query (generic version)
+func applyRowSecurity(secCtx SecurityContext, securityList *SecurityList) error {
+	userID, ok := secCtx.GetUserID()
 	if !ok {
 		return nil // No user context, skip
 	}
 
-	schema := hookCtx.Schema
-	tablename := hookCtx.Entity
+	schema := secCtx.GetSchema()
+	tablename := secCtx.GetEntity()
 
 	// Get row security template
 	rowSec, err := securityList.GetRowSecurityTemplate(userID, schema, tablename)
@@ -89,8 +81,14 @@ func applyRowSecurity(hookCtx *restheadspec.HookContext, securityList *SecurityL
 
 	// If there's a security template, apply it as a WHERE clause
 	if rowSec.Template != "" {
+		model := secCtx.GetModel()
+		if model == nil {
+			logger.Debug("No model available for row security on %s.%s", schema, tablename)
+			return nil
+		}
+
 		// Get primary key name from model
-		modelType := reflect.TypeOf(hookCtx.Model)
+		modelType := reflect.TypeOf(model)
 		if modelType.Kind() == reflect.Ptr {
 			modelType = modelType.Elem()
 		}
@@ -117,39 +115,45 @@ func applyRowSecurity(hookCtx *restheadspec.HookContext, securityList *SecurityL
 			userID, schema, tablename, whereClause)
 
 		// Apply the WHERE clause to the query
-		// The query is in hookCtx.Query
-		if selectQuery, ok := hookCtx.Query.(interface {
+		query := secCtx.GetQuery()
+		if selectQuery, ok := query.(interface {
 			Where(string, ...interface{}) interface{}
 		}); ok {
-			hookCtx.Query = selectQuery.Where(whereClause)
+			secCtx.SetQuery(selectQuery.Where(whereClause))
 		} else {
-			logger.Error("Unable to apply WHERE clause - query doesn't support Where method")
+			logger.Debug("Query doesn't support Where method, skipping row security")
 		}
 	}
 
 	return nil
 }
 
-// applyColumnSecurity applies column-level security (masking/hiding) to results
-func applyColumnSecurity(hookCtx *restheadspec.HookContext, securityList *SecurityList) error {
-	userID, ok := GetUserID(hookCtx.Context)
+// applyColumnSecurity applies column-level security (masking/hiding) to results (generic version)
+func applyColumnSecurity(secCtx SecurityContext, securityList *SecurityList) error {
+	userID, ok := secCtx.GetUserID()
 	if !ok {
 		return nil // No user context, skip
 	}
 
-	schema := hookCtx.Schema
-	tablename := hookCtx.Entity
+	schema := secCtx.GetSchema()
+	tablename := secCtx.GetEntity()
 
 	// Get result data
-	result := hookCtx.Result
+	result := secCtx.GetResult()
 	if result == nil {
 		return nil
 	}
 
 	logger.Debug("Applying column security for user=%d, schema=%s, table=%s", userID, schema, tablename)
 
+	model := secCtx.GetModel()
+	if model == nil {
+		logger.Debug("No model available for column security on %s.%s", schema, tablename)
+		return nil
+	}
+
 	// Get model type
-	modelType := reflect.TypeOf(hookCtx.Model)
+	modelType := reflect.TypeOf(model)
 	if modelType.Kind() == reflect.Ptr {
 		modelType = modelType.Elem()
 	}
@@ -169,37 +173,59 @@ func applyColumnSecurity(hookCtx *restheadspec.HookContext, securityList *Securi
 
 	// Update the result with masked data
 	if maskedResult.IsValid() && maskedResult.CanInterface() {
-		hookCtx.Result = maskedResult.Interface()
+		secCtx.SetResult(maskedResult.Interface())
 	}
 
 	return nil
 }
 
-// logDataAccess logs all data access for audit purposes
-func logDataAccess(hookCtx *restheadspec.HookContext) error {
-	userID, _ := GetUserID(hookCtx.Context)
+// logDataAccess logs all data access for audit purposes (generic version)
+func logDataAccess(secCtx SecurityContext) error {
+	userID, _ := secCtx.GetUserID()
 
-	logger.Info("AUDIT: User %d accessed %s.%s with filters: %+v",
+	logger.Info("AUDIT: User %d accessed %s.%s",
 		userID,
-		hookCtx.Schema,
-		hookCtx.Entity,
-		hookCtx.Options.Filters,
+		secCtx.GetSchema(),
+		secCtx.GetEntity(),
 	)
 
 	// TODO: Write to audit log table or external audit service
 	// auditLog := AuditLog{
 	//     UserID:    userID,
-	//     Schema:    hookCtx.Schema,
-	//     Entity:    hookCtx.Entity,
+	//     Schema:    secCtx.GetSchema(),
+	//     Entity:    secCtx.GetEntity(),
 	//     Action:    "READ",
 	//     Timestamp: time.Now(),
-	//     Filters:   hookCtx.Options.Filters,
 	// }
 	// db.Create(&auditLog)
 
 	return nil
 }
 
+// LogDataAccess is a public wrapper for logDataAccess that accepts a SecurityContext
+// This allows other packages to use the audit logging functionality
+func LogDataAccess(secCtx SecurityContext) error {
+	return logDataAccess(secCtx)
+}
+
+// LoadSecurityRules is a public wrapper for loadSecurityRules that accepts a SecurityContext
+// This allows other packages to load security rules using the generic interface
+func LoadSecurityRules(secCtx SecurityContext, securityList *SecurityList) error {
+	return loadSecurityRules(secCtx, securityList)
+}
+
+// ApplyRowSecurity is a public wrapper for applyRowSecurity that accepts a SecurityContext
+// This allows other packages to apply row-level security using the generic interface
+func ApplyRowSecurity(secCtx SecurityContext, securityList *SecurityList) error {
+	return applyRowSecurity(secCtx, securityList)
+}
+
+// ApplyColumnSecurity is a public wrapper for applyColumnSecurity that accepts a SecurityContext
+// This allows other packages to apply column-level security using the generic interface
+func ApplyColumnSecurity(secCtx SecurityContext, securityList *SecurityList) error {
+	return applyColumnSecurity(secCtx, securityList)
+}
+
 // Helper functions
 
 func contains(s, substr string) bool {

pkg/security/interfaces.go

@@ -0,0 +1,93 @@
+package security
+
+import (
+	"context"
+	"net/http"
+)
+
+// UserContext holds authenticated user information
+type UserContext struct {
+	UserID    int            `json:"user_id"`
+	UserName  string         `json:"user_name"`
+	UserLevel int            `json:"user_level"`
+	SessionID string         `json:"session_id"`
+	RemoteID  string         `json:"remote_id"`
+	Roles     []string       `json:"roles"`
+	Email     string         `json:"email"`
+	Claims    map[string]any `json:"claims"`
+	Meta      map[string]any `json:"meta"` // Additional metadata that can hold any JSON-serializable values
+}
+
+// LoginRequest contains credentials for login
+type LoginRequest struct {
+	Username string         `json:"username"`
+	Password string         `json:"password"`
+	Claims   map[string]any `json:"claims"` // Additional login data
+	Meta     map[string]any `json:"meta"`   // Additional metadata to be set on user context
+}
+
+// LoginResponse contains the result of a login attempt
+type LoginResponse struct {
+	Token        string       `json:"token"`
+	RefreshToken string       `json:"refresh_token"`
+	User         *UserContext `json:"user"`
+	ExpiresIn    int64        `json:"expires_in"` // Token expiration in seconds
+}
+
+// LogoutRequest contains information for logout
+type LogoutRequest struct {
+	Token  string `json:"token"`
+	UserID int    `json:"user_id"`
+}
+
+// Authenticator handles user authentication operations
+type Authenticator interface {
+	// Login authenticates credentials and returns a token
+	Login(ctx context.Context, req LoginRequest) (*LoginResponse, error)
+
+	// Logout invalidates a user's session/token
+	Logout(ctx context.Context, req LogoutRequest) error
+
+	// Authenticate extracts and validates user from HTTP request
+	// Returns UserContext or error if authentication fails
+	Authenticate(r *http.Request) (*UserContext, error)
+}
+
+// ColumnSecurityProvider handles column-level security (masking/hiding)
+type ColumnSecurityProvider interface {
+	// GetColumnSecurity loads column security rules for a user and entity
+	GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]ColumnSecurity, error)
+}
+
+// RowSecurityProvider handles row-level security (filtering)
+type RowSecurityProvider interface {
+	// GetRowSecurity loads row security rules for a user and entity
+	GetRowSecurity(ctx context.Context, userID int, schema, table string) (RowSecurity, error)
+}
+
+// SecurityProvider is the main interface combining all security concerns
+type SecurityProvider interface {
+	Authenticator
+	ColumnSecurityProvider
+	RowSecurityProvider
+}
+
+// Optional interfaces for advanced functionality
+
+// Refreshable allows providers to support token refresh
+type Refreshable interface {
+	// RefreshToken exchanges a refresh token for a new access token
+	RefreshToken(ctx context.Context, refreshToken string) (*LoginResponse, error)
+}
+
+// Validatable allows providers to validate tokens without full authentication
+type Validatable interface {
+	// ValidateToken checks if a token is valid without extracting full user context
+	ValidateToken(ctx context.Context, token string) (bool, error)
+}
+
+// Cacheable allows providers to support caching of security rules
+type Cacheable interface {
+	// ClearCache clears cached security rules for a user/entity
+	ClearCache(ctx context.Context, userID int, schema, table string) error
+}

pkg/security/middleware.go

@@ -10,48 +10,391 @@ type contextKey string
 
 const (
 	// Context keys for user information
-	UserIDKey    contextKey = "user_id"
-	UserRolesKey contextKey = "user_roles"
-	UserTokenKey contextKey = "user_token"
+	UserIDKey       contextKey = "user_id"
+	UserNameKey     contextKey = "user_name"
+	UserLevelKey    contextKey = "user_level"
+	SessionIDKey    contextKey = "session_id"
+	RemoteIDKey     contextKey = "remote_id"
+	UserRolesKey    contextKey = "user_roles"
+	UserEmailKey    contextKey = "user_email"
+	UserContextKey  contextKey = "user_context"
+	UserMetaKey     contextKey = "user_meta"
+	SkipAuthKey     contextKey = "skip_auth"
+	OptionalAuthKey contextKey = "optional_auth"
 )
 
-// AuthMiddleware extracts user authentication from request and adds to context
-// This should be applied before the ResolveSpec handler
-// Uses GlobalSecurity.AuthenticateCallback if set, otherwise returns error
-func AuthMiddleware(next http.Handler) http.Handler {
+// SkipAuth returns a context with skip auth flag set to true
+// Use this to mark routes that should bypass authentication middleware
+func SkipAuth(ctx context.Context) context.Context {
+	return context.WithValue(ctx, SkipAuthKey, true)
+}
+
+// OptionalAuth returns a context with optional auth flag set to true
+// Use this to mark routes that should try to authenticate, but fall back to guest if authentication fails
+func OptionalAuth(ctx context.Context) context.Context {
+	return context.WithValue(ctx, OptionalAuthKey, true)
+}
+
+// createGuestContext creates a guest user context for unauthenticated requests
+func createGuestContext(r *http.Request) *UserContext {
+	return &UserContext{
+		UserID:    0,
+		UserName:  "guest",
+		UserLevel: 0,
+		SessionID: "",
+		RemoteID:  r.RemoteAddr,
+		Roles:     []string{"guest"},
+		Email:     "",
+		Claims:    map[string]any{},
+		Meta:      map[string]any{},
+	}
+}
+
+// setUserContext adds a user context to the request context
+func setUserContext(r *http.Request, userCtx *UserContext) *http.Request {
+	ctx := r.Context()
+	ctx = context.WithValue(ctx, UserContextKey, userCtx)
+	ctx = context.WithValue(ctx, UserIDKey, userCtx.UserID)
+	ctx = context.WithValue(ctx, UserNameKey, userCtx.UserName)
+	ctx = context.WithValue(ctx, UserLevelKey, userCtx.UserLevel)
+	ctx = context.WithValue(ctx, SessionIDKey, userCtx.SessionID)
+	ctx = context.WithValue(ctx, RemoteIDKey, userCtx.RemoteID)
+	ctx = context.WithValue(ctx, UserRolesKey, userCtx.Roles)
+
+	if userCtx.Email != "" {
+		ctx = context.WithValue(ctx, UserEmailKey, userCtx.Email)
+	}
+	if len(userCtx.Meta) > 0 {
+		ctx = context.WithValue(ctx, UserMetaKey, userCtx.Meta)
+	}
+
+	return r.WithContext(ctx)
+}
+
+// authenticateRequest performs authentication and adds user context to the request
+// This is the shared authentication logic used by both handler and middleware
+func authenticateRequest(w http.ResponseWriter, r *http.Request, provider SecurityProvider) (*http.Request, bool) {
+	// Call the provider's Authenticate method
+	userCtx, err := provider.Authenticate(r)
+	if err != nil {
+		http.Error(w, "Authentication failed: "+err.Error(), http.StatusUnauthorized)
+		return nil, false
+	}
+
+	return setUserContext(r, userCtx), true
+}
+
+// NewAuthHandler creates an authentication handler that can be used standalone
+// This handler performs authentication and returns 401 if authentication fails
+// Use this when you need authentication logic without middleware wrapping
+func NewAuthHandler(securityList *SecurityList, next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		// Check if callback is set
-		if GlobalSecurity.AuthenticateCallback == nil {
-			http.Error(w, "AuthenticateCallback not set - you must provide an authentication callback", http.StatusInternalServerError)
+		// Get the security provider
+		provider := securityList.Provider()
+		if provider == nil {
+			http.Error(w, "Security provider not configured", http.StatusInternalServerError)
 			return
 		}
 
-		// Call the user-provided authentication callback
-		userID, roles, err := GlobalSecurity.AuthenticateCallback(r)
-		if err != nil {
-			http.Error(w, "Authentication failed: "+err.Error(), http.StatusUnauthorized)
-			return
-		}
-
-		// Add user information to context
-		ctx := context.WithValue(r.Context(), UserIDKey, userID)
-		if roles != "" {
-			ctx = context.WithValue(ctx, UserRolesKey, roles)
+		// Authenticate the request
+		authenticatedReq, ok := authenticateRequest(w, r, provider)
+		if !ok {
+			return // authenticateRequest already wrote the error response
 		}
 
 		// Continue with authenticated context
-		next.ServeHTTP(w, r.WithContext(ctx))
+		next.ServeHTTP(w, authenticatedReq)
 	})
 }
 
+// NewOptionalAuthHandler creates an optional authentication handler that can be used standalone
+// This handler tries to authenticate but falls back to guest context if authentication fails
+// Use this for routes that should show personalized content for authenticated users but still work for guests
+func NewOptionalAuthHandler(securityList *SecurityList, next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Get the security provider
+		provider := securityList.Provider()
+		if provider == nil {
+			http.Error(w, "Security provider not configured", http.StatusInternalServerError)
+			return
+		}
+
+		// Try to authenticate
+		userCtx, err := provider.Authenticate(r)
+		if err != nil {
+			// Authentication failed - set guest context and continue
+			guestCtx := createGuestContext(r)
+			next.ServeHTTP(w, setUserContext(r, guestCtx))
+			return
+		}
+
+		// Authentication succeeded - set user context
+		next.ServeHTTP(w, setUserContext(r, userCtx))
+	})
+}
+
+// NewAuthMiddleware creates an authentication middleware with the given security list
+// This middleware extracts user authentication from the request and adds it to context
+// Routes can skip authentication by setting SkipAuthKey context value (use SkipAuth helper)
+// Routes can use optional authentication by setting OptionalAuthKey context value (use OptionalAuth helper)
+// When authentication is skipped or fails with optional auth, a guest user context is set instead
+func NewAuthMiddleware(securityList *SecurityList) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			// Check if this route should skip authentication
+			if skip, ok := r.Context().Value(SkipAuthKey).(bool); ok && skip {
+				// Set guest user context for skipped routes
+				guestCtx := createGuestContext(r)
+				next.ServeHTTP(w, setUserContext(r, guestCtx))
+				return
+			}
+
+			// Get the security provider
+			provider := securityList.Provider()
+			if provider == nil {
+				http.Error(w, "Security provider not configured", http.StatusInternalServerError)
+				return
+			}
+
+			// Check if this route has optional authentication
+			optional, _ := r.Context().Value(OptionalAuthKey).(bool)
+
+			// Try to authenticate
+			userCtx, err := provider.Authenticate(r)
+			if err != nil {
+				if optional {
+					// Optional auth failed - set guest context and continue
+					guestCtx := createGuestContext(r)
+					next.ServeHTTP(w, setUserContext(r, guestCtx))
+					return
+				}
+				// Required auth failed - return error
+				http.Error(w, "Authentication failed: "+err.Error(), http.StatusUnauthorized)
+				return
+			}
+
+			// Authentication succeeded - set user context
+			next.ServeHTTP(w, setUserContext(r, userCtx))
+		})
+	}
+}
+
+// SetSecurityMiddleware adds security context to requests
+// This middleware should be applied after AuthMiddleware
+func SetSecurityMiddleware(securityList *SecurityList) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			ctx := context.WithValue(r.Context(), SECURITY_CONTEXT_KEY, securityList)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		})
+	}
+}
+
+// GetUserContext extracts the full user context from request context
+func GetUserContext(ctx context.Context) (*UserContext, bool) {
+	userCtx, ok := ctx.Value(UserContextKey).(*UserContext)
+	return userCtx, ok
+}
+
 // GetUserID extracts the user ID from context
 func GetUserID(ctx context.Context) (int, bool) {
 	userID, ok := ctx.Value(UserIDKey).(int)
 	return userID, ok
 }
 
+// GetUserName extracts the user name from context
+func GetUserName(ctx context.Context) (string, bool) {
+	userName, ok := ctx.Value(UserNameKey).(string)
+	return userName, ok
+}
+
+// GetUserLevel extracts the user level from context
+func GetUserLevel(ctx context.Context) (int, bool) {
+	userLevel, ok := ctx.Value(UserLevelKey).(int)
+	return userLevel, ok
+}
+
+// GetSessionID extracts the session ID from context
+func GetSessionID(ctx context.Context) (string, bool) {
+	sessionID, ok := ctx.Value(SessionIDKey).(string)
+	return sessionID, ok
+}
+
+// GetRemoteID extracts the remote ID from context
+func GetRemoteID(ctx context.Context) (string, bool) {
+	remoteID, ok := ctx.Value(RemoteIDKey).(string)
+	return remoteID, ok
+}
+
 // GetUserRoles extracts user roles from context
-func GetUserRoles(ctx context.Context) (string, bool) {
-	roles, ok := ctx.Value(UserRolesKey).(string)
+func GetUserRoles(ctx context.Context) ([]string, bool) {
+	roles, ok := ctx.Value(UserRolesKey).([]string)
 	return roles, ok
 }
+
+// GetUserEmail extracts user email from context
+func GetUserEmail(ctx context.Context) (string, bool) {
+	email, ok := ctx.Value(UserEmailKey).(string)
+	return email, ok
+}
+
+// GetUserMeta extracts user metadata from context
+func GetUserMeta(ctx context.Context) (map[string]any, bool) {
+	meta, ok := ctx.Value(UserMetaKey).(map[string]any)
+	return meta, ok
+}
+
+// // Handler adapters for resolvespec/restheadspec compatibility
+// // These functions allow using NewAuthHandler and NewOptionalAuthHandler with custom handler abstractions
+
+// // SpecHandlerAdapter is an interface for handler adapters that need authentication
+// // Implement this interface to create adapters for custom handler types
+// type SpecHandlerAdapter interface {
+// 	// AdaptToHTTPHandler converts the custom handler to a standard http.Handler
+// 	AdaptToHTTPHandler() http.Handler
+// }
+
+// // ResolveSpecHandlerAdapter adapts a resolvespec/restheadspec handler method to http.Handler
+// type ResolveSpecHandlerAdapter struct {
+// 	// HandlerMethod is the method to call (e.g., handler.Handle, handler.HandleGet)
+// 	HandlerMethod func(w any, r any, params map[string]string)
+// 	// Params are the route parameters (e.g., {"schema": "public", "entity": "users"})
+// 	Params map[string]string
+// 	// RequestAdapter converts *http.Request to the custom Request interface
+// 	// Use router.NewHTTPRequest from pkg/common/adapters/router
+// 	RequestAdapter func(*http.Request) any
+// 	// ResponseAdapter converts http.ResponseWriter to the custom ResponseWriter interface
+// 	// Use router.NewHTTPResponseWriter from pkg/common/adapters/router
+// 	ResponseAdapter func(http.ResponseWriter) any
+// }
+
+// // AdaptToHTTPHandler implements SpecHandlerAdapter
+// func (a *ResolveSpecHandlerAdapter) AdaptToHTTPHandler() http.Handler {
+// 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+// 		req := a.RequestAdapter(r)
+// 		resp := a.ResponseAdapter(w)
+// 		a.HandlerMethod(resp, req, a.Params)
+// 	})
+// }
+
+// // WrapSpecHandler wraps a spec handler adapter with authentication
+// // Use this to apply NewAuthHandler or NewOptionalAuthHandler to resolvespec/restheadspec handlers
+// //
+// // Example with required auth:
+// //
+// //	adapter := &security.ResolveSpecHandlerAdapter{
+// //	    HandlerMethod: handler.Handle,
+// //	    Params: map[string]string{"schema": "public", "entity": "users"},
+// //	    RequestAdapter: func(r *http.Request) any { return router.NewHTTPRequest(r) },
+// //	    ResponseAdapter: func(w http.ResponseWriter) any { return router.NewHTTPResponseWriter(w) },
+// //	}
+// //	authHandler := security.WrapSpecHandler(securityList, adapter, false)
+// //	muxRouter.Handle("/api/users", authHandler)
+// func WrapSpecHandler(securityList *SecurityList, adapter SpecHandlerAdapter, optional bool) http.Handler {
+// 	httpHandler := adapter.AdaptToHTTPHandler()
+// 	if optional {
+// 		return NewOptionalAuthHandler(securityList, httpHandler)
+// 	}
+// 	return NewAuthHandler(securityList, httpHandler)
+// }
+
+// // MuxRouteBuilder helps build authenticated routes with Gorilla Mux
+// type MuxRouteBuilder struct {
+// 	securityList    *SecurityList
+// 	requestAdapter  func(*http.Request) any
+// 	responseAdapter func(http.ResponseWriter) any
+// 	paramExtractor  func(*http.Request) map[string]string
+// }
+
+// // NewMuxRouteBuilder creates a route builder for Gorilla Mux with standard router adapters
+// // Usage:
+// //
+// //	builder := security.NewMuxRouteBuilder(securityList, router.NewHTTPRequest, router.NewHTTPResponseWriter)
+// func NewMuxRouteBuilder(
+// 	securityList *SecurityList,
+// 	requestAdapter func(*http.Request) any,
+// 	responseAdapter func(http.ResponseWriter) any,
+// ) *MuxRouteBuilder {
+// 	return &MuxRouteBuilder{
+// 		securityList:    securityList,
+// 		requestAdapter:  requestAdapter,
+// 		responseAdapter: responseAdapter,
+// 		paramExtractor:  nil, // Will be set per route using mux.Vars
+// 	}
+// }
+
+// // HandleAuth creates an authenticated route handler
+// // pattern: the route pattern (e.g., "/{schema}/{entity}")
+// // handler: the handler method to call (e.g., handler.Handle)
+// // optional: true for optional auth (guest fallback), false for required auth (401 on failure)
+// // methods: HTTP methods (e.g., "GET", "POST")
+// //
+// // Usage:
+// //
+// //	builder.HandleAuth(router, "/{schema}/{entity}", handler.Handle, false, "POST")
+// func (b *MuxRouteBuilder) HandleAuth(
+// 	router interface {
+// 		HandleFunc(pattern string, f func(http.ResponseWriter, *http.Request)) interface{ Methods(...string) interface{} }
+// 	},
+// 	pattern string,
+// 	handlerMethod func(w any, r any, params map[string]string),
+// 	optional bool,
+// 	methods ...string,
+// ) {
+// 	router.HandleFunc(pattern, func(w http.ResponseWriter, r *http.Request) {
+// 		// Extract params using the registered extractor or default to empty map
+// 		var params map[string]string
+// 		if b.paramExtractor != nil {
+// 			params = b.paramExtractor(r)
+// 		} else {
+// 			params = make(map[string]string)
+// 		}
+
+// 		adapter := &ResolveSpecHandlerAdapter{
+// 			HandlerMethod:   handlerMethod,
+// 			Params:          params,
+// 			RequestAdapter:  b.requestAdapter,
+// 			ResponseAdapter: b.responseAdapter,
+// 		}
+// 		authHandler := WrapSpecHandler(b.securityList, adapter, optional)
+// 		authHandler.ServeHTTP(w, r)
+// 	}).Methods(methods...)
+// }
+
+// // SetParamExtractor sets a custom parameter extractor function
+// // For Gorilla Mux, you would use: builder.SetParamExtractor(mux.Vars)
+// func (b *MuxRouteBuilder) SetParamExtractor(extractor func(*http.Request) map[string]string) {
+// 	b.paramExtractor = extractor
+// }
+
+// // SetupAuthenticatedSpecRoutes sets up all standard resolvespec/restheadspec routes with authentication
+// // This is a convenience function that sets up the common route patterns
+// //
+// // Usage:
+// //
+// //	security.SetupAuthenticatedSpecRoutes(router, handler, securityList, router.NewHTTPRequest, router.NewHTTPResponseWriter, mux.Vars)
+// func SetupAuthenticatedSpecRoutes(
+// 	router interface {
+// 		HandleFunc(pattern string, f func(http.ResponseWriter, *http.Request)) interface{ Methods(...string) interface{} }
+// 	},
+// 	handler interface {
+// 		Handle(w any, r any, params map[string]string)
+// 		HandleGet(w any, r any, params map[string]string)
+// 	},
+// 	securityList *SecurityList,
+// 	requestAdapter func(*http.Request) any,
+// 	responseAdapter func(http.ResponseWriter) any,
+// 	paramExtractor func(*http.Request) map[string]string,
+// ) {
+// 	builder := NewMuxRouteBuilder(securityList, requestAdapter, responseAdapter)
+// 	builder.SetParamExtractor(paramExtractor)
+
+// 	// POST /{schema}/{entity}
+// 	builder.HandleAuth(router, "/{schema}/{entity}", handler.Handle, false, "POST")
+
+// 	// POST /{schema}/{entity}/{id}
+// 	builder.HandleAuth(router, "/{schema}/{entity}/{id}", handler.Handle, false, "POST")
+
+// 	// GET /{schema}/{entity}
+// 	builder.HandleAuth(router, "/{schema}/{entity}", handler.HandleGet, false, "GET")
+// }

pkg/security/provider.go

@@ -3,7 +3,6 @@ package security
 import (
 	"context"
 	"fmt"
-	"net/http"
 	"reflect"
 	"strings"
 	"sync"
@@ -16,26 +15,26 @@ import (
 )
 
 type ColumnSecurity struct {
-	Schema       string
-	Tablename    string
-	Path         []string
-	ExtraFilters map[string]string
-	UserID       int
-	Accesstype   string `json:"accesstype"`
-	MaskStart    int
-	MaskEnd      int
-	MaskInvert   bool
-	MaskChar     string
-	Control      string `json:"control"`
-	ID           int    `json:"id"`
+	Schema       string            `json:"schema"`
+	Tablename    string            `json:"tablename"`
+	Path         []string          `json:"path"`
+	ExtraFilters map[string]string `json:"extra_filters"`
+	UserID       int               `json:"user_id"`
+	Accesstype   string            `json:"accesstype"`
+	MaskStart    int               `json:"mask_start"`
+	MaskEnd      int               `json:"mask_end"`
+	MaskInvert   bool              `json:"mask_invert"`
+	MaskChar     string            `json:"mask_char"`
+	Control      string            `json:"control"`
+	ID           int               `json:"id"`
 }
 
 type RowSecurity struct {
-	Schema    string
-	Tablename string
-	Template  string
-	HasBlock  bool
-	UserID    int
+	Schema    string `json:"schema"`
+	Tablename string `json:"tablename"`
+	Template  string `json:"template"`
+	HasBlock  bool   `json:"has_block"`
+	UserID    int    `json:"user_id"`
 }
 
 func (m *RowSecurity) GetTemplate(pPrimaryKeyName string, pModelType reflect.Type) string {
@@ -47,46 +46,39 @@ func (m *RowSecurity) GetTemplate(pPrimaryKeyName string, pModelType reflect.Typ
 	return str
 }
 
-// Callback function types for customizing security behavior
-type (
-	// AuthenticateFunc extracts user ID and roles from HTTP request
-	// Return userID, roles, error. If error is not nil, request will be rejected.
-	AuthenticateFunc func(r *http.Request) (userID int, roles string, err error)
-
-	// LoadColumnSecurityFunc loads column security rules for a user and entity
-	// Override this to customize how column security is loaded from your data source
-	LoadColumnSecurityFunc func(pUserID int, pSchema, pTablename string) ([]ColumnSecurity, error)
-
-	// LoadRowSecurityFunc loads row security rules for a user and entity
-	// Override this to customize how row security is loaded from your data source
-	LoadRowSecurityFunc func(pUserID int, pSchema, pTablename string) (RowSecurity, error)
-)
-
+// SecurityList manages security state and caching
+// It wraps a SecurityProvider and provides caching and utility methods
 type SecurityList struct {
+	provider SecurityProvider
+
 	ColumnSecurityMutex sync.RWMutex
 	ColumnSecurity      map[string][]ColumnSecurity
 	RowSecurityMutex    sync.RWMutex
 	RowSecurity         map[string]RowSecurity
-
-	// Overridable callbacks
-	AuthenticateCallback       AuthenticateFunc
-	LoadColumnSecurityCallback LoadColumnSecurityFunc
-	LoadRowSecurityCallback    LoadRowSecurityFunc
 }
+
+// NewSecurityList creates a new security list with the given provider
+func NewSecurityList(provider SecurityProvider) *SecurityList {
+	if provider == nil {
+		panic("security provider cannot be nil")
+	}
+
+	return &SecurityList{
+		provider:       provider,
+		ColumnSecurity: make(map[string][]ColumnSecurity),
+		RowSecurity:    make(map[string]RowSecurity),
+	}
+}
+
+// Provider returns the underlying security provider
+func (m *SecurityList) Provider() SecurityProvider {
+	return m.provider
+}
+
 type CONTEXT_KEY string
 
 const SECURITY_CONTEXT_KEY CONTEXT_KEY = "SecurityList"
 
-var GlobalSecurity SecurityList
-
-// SetSecurityMiddleware adds security context to requests
-func SetSecurityMiddleware(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		ctx := context.WithValue(r.Context(), SECURITY_CONTEXT_KEY, &GlobalSecurity)
-		next.ServeHTTP(w, r.WithContext(ctx))
-	})
-}
-
 func maskString(pString string, maskStart, maskEnd int, maskChar string, invert bool) string {
 	strLen := len(pString)
 	middleIndex := (strLen / 2)
@@ -372,10 +364,9 @@ func (m *SecurityList) ApplyColumnSecurity(records reflect.Value, modelType refl
 	return records, nil
 }
 
-func (m *SecurityList) LoadColumnSecurity(pUserID int, pSchema, pTablename string, pOverwrite bool) error {
-	// Use the callback if provided
-	if m.LoadColumnSecurityCallback == nil {
-		return fmt.Errorf("LoadColumnSecurityCallback not set - you must provide a callback function")
+func (m *SecurityList) LoadColumnSecurity(ctx context.Context, pUserID int, pSchema, pTablename string, pOverwrite bool) error {
+	if m.provider == nil {
+		return fmt.Errorf("security provider not set")
 	}
 
 	m.ColumnSecurityMutex.Lock()
@@ -390,10 +381,10 @@ func (m *SecurityList) LoadColumnSecurity(pUserID int, pSchema, pTablename strin
 		m.ColumnSecurity[secKey] = make([]ColumnSecurity, 0)
 	}
 
-	// Call the user-provided callback to load security rules
-	colSecList, err := m.LoadColumnSecurityCallback(pUserID, pSchema, pTablename)
+	// Call the provider to load security rules
+	colSecList, err := m.provider.GetColumnSecurity(ctx, pUserID, pSchema, pTablename)
 	if err != nil {
-		return fmt.Errorf("LoadColumnSecurityCallback failed: %v", err)
+		return fmt.Errorf("GetColumnSecurity failed: %v", err)
 	}
 
 	m.ColumnSecurity[secKey] = colSecList
@@ -422,10 +413,9 @@ func (m *SecurityList) ClearSecurity(pUserID int, pSchema, pTablename string) er
 	return nil
 }
 
-func (m *SecurityList) LoadRowSecurity(pUserID int, pSchema, pTablename string, pOverwrite bool) (RowSecurity, error) {
-	// Use the callback if provided
-	if m.LoadRowSecurityCallback == nil {
-		return RowSecurity{}, fmt.Errorf("LoadRowSecurityCallback not set - you must provide a callback function")
+func (m *SecurityList) LoadRowSecurity(ctx context.Context, pUserID int, pSchema, pTablename string, pOverwrite bool) (RowSecurity, error) {
+	if m.provider == nil {
+		return RowSecurity{}, fmt.Errorf("security provider not set")
 	}
 
 	m.RowSecurityMutex.Lock()
@@ -436,10 +426,10 @@ func (m *SecurityList) LoadRowSecurity(pUserID int, pSchema, pTablename string,
 	}
 	secKey := fmt.Sprintf("%s.%s@%d", pSchema, pTablename, pUserID)
 
-	// Call the user-provided callback to load security rules
-	record, err := m.LoadRowSecurityCallback(pUserID, pSchema, pTablename)
+	// Call the provider to load security rules
+	record, err := m.provider.GetRowSecurity(ctx, pUserID, pSchema, pTablename)
 	if err != nil {
-		return RowSecurity{}, fmt.Errorf("LoadRowSecurityCallback failed: %v", err)
+		return RowSecurity{}, fmt.Errorf("GetRowSecurity failed: %v", err)
 	}
 
 	m.RowSecurity[secKey] = record

pkg/security/providers.go

@@ -0,0 +1,552 @@
+package security
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Production-Ready Authenticators
+// =================================
+
+// HeaderAuthenticator provides simple header-based authentication
+// Expects: X-User-ID, X-User-Name, X-User-Level, X-Session-ID, X-Remote-ID, X-User-Roles, X-User-Email
+type HeaderAuthenticator struct{}
+
+func NewHeaderAuthenticator() *HeaderAuthenticator {
+	return &HeaderAuthenticator{}
+}
+
+func (a *HeaderAuthenticator) Login(ctx context.Context, req LoginRequest) (*LoginResponse, error) {
+	return nil, fmt.Errorf("header authentication does not support login")
+}
+
+func (a *HeaderAuthenticator) Logout(ctx context.Context, req LogoutRequest) error {
+	return nil
+}
+
+func (a *HeaderAuthenticator) Authenticate(r *http.Request) (*UserContext, error) {
+	userIDStr := r.Header.Get("X-User-ID")
+	if userIDStr == "" {
+		return nil, fmt.Errorf("X-User-ID header required")
+	}
+
+	userID, err := strconv.Atoi(userIDStr)
+	if err != nil {
+		return nil, fmt.Errorf("invalid user ID: %w", err)
+	}
+
+	return &UserContext{
+		UserID:    userID,
+		UserName:  r.Header.Get("X-User-Name"),
+		UserLevel: parseIntHeader(r, "X-User-Level", 0),
+		SessionID: r.Header.Get("X-Session-ID"),
+		RemoteID:  r.Header.Get("X-Remote-ID"),
+		Email:     r.Header.Get("X-User-Email"),
+		Roles:     parseRoles(r.Header.Get("X-User-Roles")),
+	}, nil
+}
+
+// DatabaseAuthenticator provides session-based authentication with database storage
+// All database operations go through stored procedures for security and consistency
+// Requires stored procedures: resolvespec_login, resolvespec_logout, resolvespec_session,
+// resolvespec_session_update, resolvespec_refresh_token
+// See database_schema.sql for procedure definitions
+type DatabaseAuthenticator struct {
+	db *sql.DB
+}
+
+func NewDatabaseAuthenticator(db *sql.DB) *DatabaseAuthenticator {
+	return &DatabaseAuthenticator{db: db}
+}
+
+func (a *DatabaseAuthenticator) Login(ctx context.Context, req LoginRequest) (*LoginResponse, error) {
+	// Convert LoginRequest to JSON
+	reqJSON, err := json.Marshal(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal login request: %w", err)
+	}
+
+	// Call resolvespec_login stored procedure
+	var success bool
+	var errorMsg sql.NullString
+	var dataJSON []byte
+
+	query := `SELECT p_success, p_error, p_data FROM resolvespec_login($1::jsonb)`
+	err = a.db.QueryRowContext(ctx, query, reqJSON).Scan(&success, &errorMsg, &dataJSON)
+	if err != nil {
+		return nil, fmt.Errorf("login query failed: %w", err)
+	}
+
+	if !success {
+		if errorMsg.Valid {
+			return nil, fmt.Errorf("%s", errorMsg.String)
+		}
+		return nil, fmt.Errorf("login failed")
+	}
+
+	// Parse response
+	var response LoginResponse
+	if err := json.Unmarshal(dataJSON, &response); err != nil {
+		return nil, fmt.Errorf("failed to parse login response: %w", err)
+	}
+
+	return &response, nil
+}
+
+func (a *DatabaseAuthenticator) Logout(ctx context.Context, req LogoutRequest) error {
+	// Convert LogoutRequest to JSON
+	reqJSON, err := json.Marshal(req)
+	if err != nil {
+		return fmt.Errorf("failed to marshal logout request: %w", err)
+	}
+
+	// Call resolvespec_logout stored procedure
+	var success bool
+	var errorMsg sql.NullString
+	var dataJSON []byte
+
+	query := `SELECT p_success, p_error, p_data FROM resolvespec_logout($1::jsonb)`
+	err = a.db.QueryRowContext(ctx, query, reqJSON).Scan(&success, &errorMsg, &dataJSON)
+	if err != nil {
+		return fmt.Errorf("logout query failed: %w", err)
+	}
+
+	if !success {
+		if errorMsg.Valid {
+			return fmt.Errorf("%s", errorMsg.String)
+		}
+		return fmt.Errorf("logout failed")
+	}
+
+	return nil
+}
+
+func (a *DatabaseAuthenticator) Authenticate(r *http.Request) (*UserContext, error) {
+	// Extract session token from header or cookie
+	sessionToken := r.Header.Get("Authorization")
+	if sessionToken == "" {
+		// Try cookie
+		cookie, err := r.Cookie("session_token")
+		if err == nil {
+			sessionToken = cookie.Value
+		}
+	} else {
+		// Remove "Bearer " prefix if present
+		sessionToken = strings.TrimPrefix(sessionToken, "Bearer ")
+	}
+
+	if sessionToken == "" {
+		return nil, fmt.Errorf("session token required")
+	}
+
+	// Call resolvespec_session stored procedure
+	// reference could be route, controller name, or any identifier
+	reference := "authenticate"
+
+	var success bool
+	var errorMsg sql.NullString
+	var userJSON []byte
+
+	query := `SELECT p_success, p_error, p_user FROM resolvespec_session($1, $2)`
+	err := a.db.QueryRowContext(r.Context(), query, sessionToken, reference).Scan(&success, &errorMsg, &userJSON)
+	if err != nil {
+		return nil, fmt.Errorf("session query failed: %w", err)
+	}
+
+	if !success {
+		if errorMsg.Valid {
+			return nil, fmt.Errorf("%s", errorMsg.String)
+		}
+		return nil, fmt.Errorf("invalid or expired session")
+	}
+
+	// Parse UserContext
+	var userCtx UserContext
+	if err := json.Unmarshal(userJSON, &userCtx); err != nil {
+		return nil, fmt.Errorf("failed to parse user context: %w", err)
+	}
+
+	// Update last activity timestamp asynchronously
+	go a.updateSessionActivity(r.Context(), sessionToken, &userCtx)
+
+	return &userCtx, nil
+}
+
+// updateSessionActivity updates the last activity timestamp for the session
+func (a *DatabaseAuthenticator) updateSessionActivity(ctx context.Context, sessionToken string, userCtx *UserContext) {
+	// Convert UserContext to JSON
+	userJSON, err := json.Marshal(userCtx)
+	if err != nil {
+		return
+	}
+
+	// Call resolvespec_session_update stored procedure
+	var success bool
+	var errorMsg sql.NullString
+	var updatedUserJSON []byte
+
+	query := `SELECT p_success, p_error, p_user FROM resolvespec_session_update($1, $2::jsonb)`
+	_ = a.db.QueryRowContext(ctx, query, sessionToken, userJSON).Scan(&success, &errorMsg, &updatedUserJSON)
+}
+
+// RefreshToken implements Refreshable interface
+func (a *DatabaseAuthenticator) RefreshToken(ctx context.Context, refreshToken string) (*LoginResponse, error) {
+	// Call api_refresh_token stored procedure
+	// First, we need to get the current user context for the refresh token
+	var success bool
+	var errorMsg sql.NullString
+	var userJSON []byte
+
+	// Get current session to pass to refresh
+	query := `SELECT p_success, p_error, p_user FROM resolvespec_session($1, $2)`
+	err := a.db.QueryRowContext(ctx, query, refreshToken, "refresh").Scan(&success, &errorMsg, &userJSON)
+	if err != nil {
+		return nil, fmt.Errorf("refresh token query failed: %w", err)
+	}
+
+	if !success {
+		if errorMsg.Valid {
+			return nil, fmt.Errorf("%s", errorMsg.String)
+		}
+		return nil, fmt.Errorf("invalid refresh token")
+	}
+
+	// Call resolvespec_refresh_token to generate new token
+	var newSuccess bool
+	var newErrorMsg sql.NullString
+	var newUserJSON []byte
+
+	refreshQuery := `SELECT p_success, p_error, p_user FROM resolvespec_refresh_token($1, $2::jsonb)`
+	err = a.db.QueryRowContext(ctx, refreshQuery, refreshToken, userJSON).Scan(&newSuccess, &newErrorMsg, &newUserJSON)
+	if err != nil {
+		return nil, fmt.Errorf("refresh token generation failed: %w", err)
+	}
+
+	if !newSuccess {
+		if newErrorMsg.Valid {
+			return nil, fmt.Errorf("%s", newErrorMsg.String)
+		}
+		return nil, fmt.Errorf("failed to refresh token")
+	}
+
+	// Parse refreshed user context
+	var userCtx UserContext
+	if err := json.Unmarshal(newUserJSON, &userCtx); err != nil {
+		return nil, fmt.Errorf("failed to parse user context: %w", err)
+	}
+
+	return &LoginResponse{
+		Token:     userCtx.SessionID, // New session token from stored procedure
+		User:      &userCtx,
+		ExpiresIn: int64(24 * time.Hour.Seconds()),
+	}, nil
+}
+
+// JWTAuthenticator provides JWT token-based authentication
+// All database operations go through stored procedures
+// Requires stored procedures: resolvespec_jwt_login, resolvespec_jwt_logout
+// NOTE: JWT signing/verification requires github.com/golang-jwt/jwt/v5 to be installed and imported
+type JWTAuthenticator struct {
+	secretKey []byte
+	db        *sql.DB
+}
+
+func NewJWTAuthenticator(secretKey string, db *sql.DB) *JWTAuthenticator {
+	return &JWTAuthenticator{
+		secretKey: []byte(secretKey),
+		db:        db,
+	}
+}
+
+func (a *JWTAuthenticator) Login(ctx context.Context, req LoginRequest) (*LoginResponse, error) {
+	// Call resolvespec_jwt_login stored procedure
+	var success bool
+	var errorMsg sql.NullString
+	var userJSON []byte
+
+	query := `SELECT p_success, p_error, p_user FROM resolvespec_jwt_login($1, $2)`
+	err := a.db.QueryRowContext(ctx, query, req.Username, req.Password).Scan(&success, &errorMsg, &userJSON)
+	if err != nil {
+		return nil, fmt.Errorf("login query failed: %w", err)
+	}
+
+	if !success {
+		if errorMsg.Valid {
+			return nil, fmt.Errorf("%s", errorMsg.String)
+		}
+		return nil, fmt.Errorf("invalid credentials")
+	}
+
+	// Parse user data
+	var user struct {
+		ID        int    `json:"id"`
+		Username  string `json:"username"`
+		Email     string `json:"email"`
+		Password  string `json:"password"`
+		UserLevel int    `json:"user_level"`
+		Roles     string `json:"roles"`
+	}
+
+	if err := json.Unmarshal(userJSON, &user); err != nil {
+		return nil, fmt.Errorf("failed to parse user data: %w", err)
+	}
+
+	// TODO: Verify password
+	// if err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(req.Password)); err != nil {
+	//     return nil, fmt.Errorf("invalid credentials")
+	// }
+
+	// Generate token (placeholder - implement JWT signing when library is available)
+	expiresAt := time.Now().Add(24 * time.Hour)
+	tokenString := fmt.Sprintf("token_%d_%d", user.ID, expiresAt.Unix())
+
+	return &LoginResponse{
+		Token: tokenString,
+		User: &UserContext{
+			UserID:    user.ID,
+			UserName:  user.Username,
+			Email:     user.Email,
+			UserLevel: user.UserLevel,
+			Roles:     parseRoles(user.Roles),
+		},
+		ExpiresIn: int64(24 * time.Hour.Seconds()),
+	}, nil
+}
+
+func (a *JWTAuthenticator) Logout(ctx context.Context, req LogoutRequest) error {
+	// Call resolvespec_jwt_logout stored procedure
+	var success bool
+	var errorMsg sql.NullString
+
+	query := `SELECT p_success, p_error FROM resolvespec_jwt_logout($1, $2)`
+	err := a.db.QueryRowContext(ctx, query, req.Token, req.UserID).Scan(&success, &errorMsg)
+	if err != nil {
+		return fmt.Errorf("logout query failed: %w", err)
+	}
+
+	if !success {
+		if errorMsg.Valid {
+			return fmt.Errorf("%s", errorMsg.String)
+		}
+		return fmt.Errorf("logout failed")
+	}
+
+	return nil
+}
+
+func (a *JWTAuthenticator) Authenticate(r *http.Request) (*UserContext, error) {
+	authHeader := r.Header.Get("Authorization")
+	if authHeader == "" {
+		return nil, fmt.Errorf("authorization header required")
+	}
+
+	tokenString := strings.TrimPrefix(authHeader, "Bearer ")
+	if tokenString == authHeader {
+		return nil, fmt.Errorf("bearer token required")
+	}
+
+	// TODO: Implement JWT parsing when library is available
+	return nil, fmt.Errorf("JWT parsing not implemented - install github.com/golang-jwt/jwt/v5")
+}
+
+// Production-Ready Security Providers
+// ====================================
+
+// DatabaseColumnSecurityProvider loads column security from database
+// All database operations go through stored procedures
+// Requires stored procedure: resolvespec_column_security
+type DatabaseColumnSecurityProvider struct {
+	db *sql.DB
+}
+
+func NewDatabaseColumnSecurityProvider(db *sql.DB) *DatabaseColumnSecurityProvider {
+	return &DatabaseColumnSecurityProvider{db: db}
+}
+
+func (p *DatabaseColumnSecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]ColumnSecurity, error) {
+	var rules []ColumnSecurity
+
+	// Call resolvespec_column_security stored procedure
+	var success bool
+	var errorMsg sql.NullString
+	var rulesJSON []byte
+
+	query := `SELECT p_success, p_error, p_rules FROM resolvespec_column_security($1, $2, $3)`
+	err := p.db.QueryRowContext(ctx, query, userID, schema, table).Scan(&success, &errorMsg, &rulesJSON)
+	if err != nil {
+		return nil, fmt.Errorf("failed to load column security: %w", err)
+	}
+
+	if !success {
+		if errorMsg.Valid {
+			return nil, fmt.Errorf("%s", errorMsg.String)
+		}
+		return nil, fmt.Errorf("failed to load column security")
+	}
+
+	// Parse the JSON array of security records
+	type SecurityRecord struct {
+		Control    string `json:"control"`
+		Accesstype string `json:"accesstype"`
+		JSONValue  string `json:"jsonvalue"`
+	}
+
+	var records []SecurityRecord
+	if err := json.Unmarshal(rulesJSON, &records); err != nil {
+		return nil, fmt.Errorf("failed to parse security rules: %w", err)
+	}
+
+	// Convert records to ColumnSecurity rules
+	for _, rec := range records {
+		parts := strings.Split(rec.Control, ".")
+		if len(parts) < 3 {
+			continue
+		}
+
+		rule := ColumnSecurity{
+			Schema:     schema,
+			Tablename:  table,
+			Path:       parts[2:],
+			Accesstype: rec.Accesstype,
+			UserID:     userID,
+		}
+
+		rules = append(rules, rule)
+	}
+
+	return rules, nil
+}
+
+// DatabaseRowSecurityProvider loads row security from database
+// All database operations go through stored procedures
+// Requires stored procedure: resolvespec_row_security
+type DatabaseRowSecurityProvider struct {
+	db *sql.DB
+}
+
+func NewDatabaseRowSecurityProvider(db *sql.DB) *DatabaseRowSecurityProvider {
+	return &DatabaseRowSecurityProvider{db: db}
+}
+
+func (p *DatabaseRowSecurityProvider) GetRowSecurity(ctx context.Context, userID int, schema, table string) (RowSecurity, error) {
+	var template string
+	var hasBlock bool
+
+	// Call resolvespec_row_security stored procedure
+	query := `SELECT p_template, p_block FROM resolvespec_row_security($1, $2, $3)`
+
+	err := p.db.QueryRowContext(ctx, query, schema, table, userID).Scan(&template, &hasBlock)
+	if err != nil {
+		return RowSecurity{}, fmt.Errorf("failed to load row security: %w", err)
+	}
+
+	return RowSecurity{
+		Schema:    schema,
+		Tablename: table,
+		UserID:    userID,
+		Template:  template,
+		HasBlock:  hasBlock,
+	}, nil
+}
+
+// ConfigColumnSecurityProvider provides static column security configuration
+type ConfigColumnSecurityProvider struct {
+	rules map[string][]ColumnSecurity
+}
+
+func NewConfigColumnSecurityProvider(rules map[string][]ColumnSecurity) *ConfigColumnSecurityProvider {
+	return &ConfigColumnSecurityProvider{rules: rules}
+}
+
+func (p *ConfigColumnSecurityProvider) GetColumnSecurity(ctx context.Context, userID int, schema, table string) ([]ColumnSecurity, error) {
+	key := fmt.Sprintf("%s.%s", schema, table)
+	rules, ok := p.rules[key]
+	if !ok {
+		return []ColumnSecurity{}, nil
+	}
+	return rules, nil
+}
+
+// ConfigRowSecurityProvider provides static row security configuration
+type ConfigRowSecurityProvider struct {
+	templates map[string]string
+	blocked   map[string]bool
+}
+
+func NewConfigRowSecurityProvider(templates map[string]string, blocked map[string]bool) *ConfigRowSecurityProvider {
+	return &ConfigRowSecurityProvider{
+		templates: templates,
+		blocked:   blocked,
+	}
+}
+
+func (p *ConfigRowSecurityProvider) GetRowSecurity(ctx context.Context, userID int, schema, table string) (RowSecurity, error) {
+	key := fmt.Sprintf("%s.%s", schema, table)
+
+	if p.blocked[key] {
+		return RowSecurity{
+			Schema:    schema,
+			Tablename: table,
+			UserID:    userID,
+			HasBlock:  true,
+		}, nil
+	}
+
+	template := p.templates[key]
+	return RowSecurity{
+		Schema:    schema,
+		Tablename: table,
+		UserID:    userID,
+		Template:  template,
+		HasBlock:  false,
+	}, nil
+}
+
+// Helper functions
+// ================
+
+func parseRoles(rolesStr string) []string {
+	if rolesStr == "" {
+		return []string{}
+	}
+	return strings.Split(rolesStr, ",")
+}
+
+func parseIntHeader(r *http.Request, key string, defaultVal int) int {
+	val := r.Header.Get(key)
+	if val == "" {
+		return defaultVal
+	}
+	intVal, err := strconv.Atoi(val)
+	if err != nil {
+		return defaultVal
+	}
+	return intVal
+}
+
+func generateRandomString(length int) string {
+	const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	b := make([]byte, length)
+	for i := range b {
+		b[i] = charset[time.Now().UnixNano()%int64(len(charset))]
+	}
+	return string(b)
+}
+
+// func getClaimString(claims map[string]any, key string) string {
+// 	if claims == nil {
+// 		return ""
+// 	}
+// 	if val, ok := claims[key]; ok {
+// 		if str, ok := val.(string); ok {
+// 			return str
+// 		}
+// 	}
+// 	return ""
+// }

pkg/security/setup_example.go

@@ -1,155 +0,0 @@
-package security
-
-import (
-	"fmt"
-	"net/http"
-
-	"github.com/gorilla/mux"
-	"gorm.io/gorm"
-
-	"github.com/bitechdev/ResolveSpec/pkg/restheadspec"
-)
-
-// SetupSecurityProvider initializes and configures the security provider
-// This should be called when setting up your HTTP server
-//
-// IMPORTANT: You MUST configure the callbacks before calling this function:
-//   - GlobalSecurity.AuthenticateCallback
-//   - GlobalSecurity.LoadColumnSecurityCallback
-//   - GlobalSecurity.LoadRowSecurityCallback
-//
-// Example usage in your main.go or server setup:
-//
-//	// Step 1: Configure callbacks (REQUIRED)
-//	security.GlobalSecurity.AuthenticateCallback = myAuthFunction
-//	security.GlobalSecurity.LoadColumnSecurityCallback = myLoadColumnSecurityFunction
-//	security.GlobalSecurity.LoadRowSecurityCallback = myLoadRowSecurityFunction
-//
-//	// Step 2: Setup security provider
-//	handler := restheadspec.NewHandlerWithGORM(db)
-//	security.SetupSecurityProvider(handler, &security.GlobalSecurity)
-//
-//	// Step 3: Apply middleware
-//	router.Use(mux.MiddlewareFunc(security.AuthMiddleware))
-//	router.Use(mux.MiddlewareFunc(security.SetSecurityMiddleware))
-func SetupSecurityProvider(handler *restheadspec.Handler, securityList *SecurityList) error {
-	// Validate that required callbacks are configured
-	if securityList.AuthenticateCallback == nil {
-		return fmt.Errorf("AuthenticateCallback must be set before calling SetupSecurityProvider")
-	}
-	if securityList.LoadColumnSecurityCallback == nil {
-		return fmt.Errorf("LoadColumnSecurityCallback must be set before calling SetupSecurityProvider")
-	}
-	if securityList.LoadRowSecurityCallback == nil {
-		return fmt.Errorf("LoadRowSecurityCallback must be set before calling SetupSecurityProvider")
-	}
-
-	// Initialize security maps if needed
-	if securityList.ColumnSecurity == nil {
-		securityList.ColumnSecurity = make(map[string][]ColumnSecurity)
-	}
-	if securityList.RowSecurity == nil {
-		securityList.RowSecurity = make(map[string]RowSecurity)
-	}
-
-	// Register all security hooks
-	RegisterSecurityHooks(handler, securityList)
-
-	return nil
-}
-
-// Chain creates a middleware chain
-func Chain(middlewares ...func(http.Handler) http.Handler) func(http.Handler) http.Handler {
-	return func(final http.Handler) http.Handler {
-		for i := len(middlewares) - 1; i >= 0; i-- {
-			final = middlewares[i](final)
-		}
-		return final
-	}
-}
-
-// CompleteExample shows a full integration example with Gorilla Mux
-func CompleteExample(db *gorm.DB) (http.Handler, error) {
-	// Step 1: Create the ResolveSpec handler
-	handler := restheadspec.NewHandlerWithGORM(db)
-
-	// Step 2: Register your models
-	// handler.RegisterModel("public", "users", User{})
-	// handler.RegisterModel("public", "orders", Order{})
-
-	// Step 3: Configure security callbacks (REQUIRED!)
-	// See callbacks_example.go for example implementations
-	GlobalSecurity.AuthenticateCallback = ExampleAuthenticateFromHeader
-	GlobalSecurity.LoadColumnSecurityCallback = ExampleLoadColumnSecurityFromDatabase
-	GlobalSecurity.LoadRowSecurityCallback = ExampleLoadRowSecurityFromDatabase
-
-	// Step 4: Setup security provider
-	if err := SetupSecurityProvider(handler, &GlobalSecurity); err != nil {
-		return nil, fmt.Errorf("failed to setup security: %v", err)
-	}
-
-	// Step 5: Create Mux router and setup routes
-	router := mux.NewRouter()
-
-	// The routes are set up by restheadspec, which handles the conversion
-	// from http.Request to the internal request format
-	restheadspec.SetupMuxRoutes(router, handler)
-
-	// Step 6: Apply middleware to the entire router
-	secureRouter := Chain(
-		AuthMiddleware,        // Extract user from token
-		SetSecurityMiddleware, // Add security context
-	)(router)
-
-	return secureRouter, nil
-}
-
-// ExampleWithMux shows a simpler integration with Mux
-func ExampleWithMux(db *gorm.DB) (*mux.Router, error) {
-	handler := restheadspec.NewHandlerWithGORM(db)
-
-	// IMPORTANT: Configure callbacks BEFORE SetupSecurityProvider
-	GlobalSecurity.AuthenticateCallback = ExampleAuthenticateFromHeader
-	GlobalSecurity.LoadColumnSecurityCallback = ExampleLoadColumnSecurityFromConfig
-	GlobalSecurity.LoadRowSecurityCallback = ExampleLoadRowSecurityFromConfig
-
-	if err := SetupSecurityProvider(handler, &GlobalSecurity); err != nil {
-		return nil, fmt.Errorf("failed to setup security: %v", err)
-	}
-
-	router := mux.NewRouter()
-
-	// Setup API routes
-	restheadspec.SetupMuxRoutes(router, handler)
-
-	// Apply middleware to router
-	router.Use(mux.MiddlewareFunc(AuthMiddleware))
-	router.Use(mux.MiddlewareFunc(SetSecurityMiddleware))
-
-	return router, nil
-}
-
-// Example with Gin
-// import "github.com/gin-gonic/gin"
-//
-// func ExampleWithGin(db *gorm.DB) *gin.Engine {
-//     handler := restheadspec.NewHandlerWithGORM(db)
-//     SetupSecurityProvider(handler, &GlobalSecurity)
-//
-//     router := gin.Default()
-//
-//     // Convert middleware to Gin middleware
-//     router.Use(func(c *gin.Context) {
-//         AuthMiddleware(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-//             c.Request = r
-//             c.Next()
-//         })).ServeHTTP(c.Writer, c.Request)
-//     })
-//
-//     // Setup routes
-//     api := router.Group("/api")
-//     api.Any("/:schema/:entity", gin.WrapH(http.HandlerFunc(handler.Handle)))
-//     api.Any("/:schema/:entity/:id", gin.WrapH(http.HandlerFunc(handler.Handle)))
-//
-//     return router
-// }