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exposed types FromString

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This commit is contained in:
Hein 2025-12-09 14:03:55 +02:00
parent 3ec2e5f15a
commit a4dd2a7086
1 changed files with 29 additions and 5 deletions
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34
pkg/common/sql_types.go
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@ -71,14 +71,14 @@ func (n *SqlNull[T]) Scan(value any) error {
// Fallback: parse from string/bytes. // Fallback: parse from string/bytes.
switch v := value.(type) { switch v := value.(type) {
case string: case string:
return n.fromString(v) return n.FromString(v)
case []byte: case []byte:
return n.fromString(string(v)) return n.FromString(string(v))
default: default:
return n.fromString(fmt.Sprintf("%v", value)) return n.FromString(fmt.Sprintf("%v", value))
} }
} }
func (n *SqlNull[T]) fromString(s string) error { func (n *SqlNull[T]) FromString(s string) error {
s = strings.TrimSpace(s) s = strings.TrimSpace(s)
n.Valid = false n.Valid = false
n.Val = *new(T) n.Val = *new(T)
@ -156,7 +156,7 @@ func (n *SqlNull[T]) UnmarshalJSON(b []byte) error {
// Fallback: unmarshal as string and parse. // Fallback: unmarshal as string and parse.
var s string var s string
if err := json.Unmarshal(b, &s); err == nil { if err := json.Unmarshal(b, &s); err == nil {
return n.fromString(s) return n.FromString(s)
} }
return fmt.Errorf("cannot unmarshal %s into SqlNull[%T]", b, n.Val) return fmt.Errorf("cannot unmarshal %s into SqlNull[%T]", b, n.Val)
@ -514,6 +514,30 @@ func Null[T any](v T, valid bool) SqlNull[T] {
return SqlNull[T]{Val: v, Valid: valid} return SqlNull[T]{Val: v, Valid: valid}
} }
func NewSql[T any](value any) SqlNull[T] {
n := SqlNull[T]{}
if value == nil {
return n
}
// Fast path: exact match
if v, ok := value.(T); ok {
n.Val = v
n.Valid = true
return n
}
// Try from another SqlNull
if sn, ok := value.(SqlNull[T]); ok {
return sn
}
// Convert via string
_ = n.FromString(fmt.Sprintf("%v", value))
return n
}
func NewSqlInt16(v int16) SqlInt16 { func NewSqlInt16(v int16) SqlInt16 {
return SqlInt16{Val: v, Valid: true} return SqlInt16{Val: v, Valid: true}
} }