forked from mirror/gorm
64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
package dialect
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import (
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"fmt"
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"reflect"
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)
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type postgres struct {
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}
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func (s *postgres) BinVar(i int) string {
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return fmt.Sprintf("$%v", i)
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}
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func (s *postgres) SupportLastInsertId() bool {
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return false
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}
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func (d *postgres) SqlTag(value reflect.Value, size int) string {
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switch value.Kind() {
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case reflect.Bool:
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return "boolean"
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uintptr:
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return "integer"
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case reflect.Int64, reflect.Uint64:
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return "bigint"
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case reflect.Float32, reflect.Float64:
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return "numeric"
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case reflect.String:
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if size > 0 && size < 65532 {
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return fmt.Sprintf("varchar(%d)", size)
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}
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return "text"
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case reflect.Struct:
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if value.Type() == timeType {
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return "timestamp with time zone"
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}
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default:
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if _, ok := value.Interface().([]byte); ok {
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return "bytea"
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}
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}
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panic(fmt.Sprintf("invalid sql type %s (%s) for postgres", value.Type().Name(), value.Kind().String()))
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}
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func (s *postgres) PrimaryKeyTag(value reflect.Value, size int) string {
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switch value.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uintptr:
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return "serial PRIMARY KEY"
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case reflect.Int64, reflect.Uint64:
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return "bigserial PRIMARY KEY"
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default:
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panic("Invalid primary key type")
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}
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}
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func (s *postgres) ReturningStr(key string) (str string) {
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return fmt.Sprintf("RETURNING \"%v\"", key)
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}
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func (s *postgres) Quote(key string) (str string) {
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return fmt.Sprintf("\"%s\"", key)
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}
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