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array.go
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/
array.go
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package types
import (
"database/sql"
"fmt"
"reflect"
)
type Array struct {
v reflect.Value
append AppenderFunc
scan ScannerFunc
}
var _ ValueAppender = (*Array)(nil)
var _ sql.Scanner = (*Array)(nil)
func NewArray(vi interface{}) *Array {
v := reflect.ValueOf(vi)
if !v.IsValid() {
panic(fmt.Errorf("pg.Array(nil)"))
}
v = reflect.Indirect(v)
if v.Kind() != reflect.Slice {
panic(fmt.Errorf("pg.Array(unsupported %s)", v.Type()))
}
return &Array{
v: v,
append: ArrayAppender(v.Type()),
scan: ArrayScanner(v.Type()),
}
}
func (a *Array) Value() interface{} {
if a.v.IsValid() {
return a.v.Interface()
}
return nil
}
func (a *Array) AppendValue(b []byte, quote int) ([]byte, error) {
b = a.append(b, a.v, quote)
return b, nil
}
func (a *Array) Scan(b interface{}) error {
if b == nil {
return a.scan(a.v, nil)
}
return a.scan(a.v, b.([]byte))
}