ByteReflectType    = reflect.TypeOf(uint8(0))
)

type (
	// DataType GORM data type
	DataType string
	// TimeType GORM time type
	TimeType int64
)

// GORM time types
const (
	UnixTime        TimeType = 1
	UnixSecond      TimeType = 2
	UnixMillisecond TimeType = 3
	UnixNanosecond  TimeType = 4
)

// GORM fields types
const (
	Bool   DataType = "bool"
	Int    DataType = "int"

		if stmt.Schema != nil {
			if field := stmt.Schema.LookUpField(field); field != nil {
				fileType := m.FullDataTypeOf(field)
				return m.DB.Exec(
					"ALTER TABLE ? ALTER COLUMN ? TYPE ?",
					m.CurrentTable(stmt), clause.Column{Name: field.DBName}, fileType,
				).Error

			}
		}
		return fmt.Errorf("failed to look up field with name: %s", field)
	})
}

						association.Error = rel.Field.Set(association.DB.Statement.Context, reflectValue.Index(i), reflect.Zero(rel.Field.FieldType).Interface())
					}
				case reflect.Struct:
					association.Error = rel.Field.Set(association.DB.Statement.Context, reflectValue, reflect.Zero(rel.Field.FieldType).Interface())
				}

				for _, ref := range rel.References {
					updateMap[ref.ForeignKey.DBName] = nil
				}

type JSONSerializer struct{}

// Scan implements serializer interface
func (JSONSerializer) Scan(ctx context.Context, field *Field, dst reflect.Value, dbValue interface{}) (err error) {
	fieldValue := reflect.New(field.FieldType)

	if dbValue != nil {
		var bytes []byte
		switch v := dbValue.(type) {
		case []byte:
			bytes = v
		case string:
			bytes = []byte(v)
		default:

	if response != nil {
		w.Write(response)
	}
}

// mimeType represents various MIME type used API responses.
type mimeType string

const (
	// Means no response type.
	mimeNone mimeType = ""
	// Means response type is JSON.
	mimeJSON mimeType = "application/json"
	// Means response type is XML.
	mimeXML mimeType = "application/xml"
)

	if db.Statement.Schema != nil {
		for idx, name := range columns {
			if field := db.Statement.Schema.LookUpField(name); field != nil {
				values[idx] = reflect.New(reflect.PtrTo(field.FieldType)).Interface()
				continue
			}
			values[idx] = new(interface{})
		}
	} else if len(columnTypes) > 0 {
		for idx, columnType := range columnTypes {
			if columnType.ScanType() != nil {

			tx.AddError(rel.Field.Set(tx.Statement.Context, reflectValue, reflect.MakeSlice(rel.Field.IndirectFieldType, 0, 10).Interface()))
		default:
			tx.AddError(rel.Field.Set(tx.Statement.Context, reflectValue, reflect.New(rel.Field.FieldType).Interface()))
		}
	case reflect.Slice, reflect.Array:
		for i := 0; i < reflectValue.Len(); i++ {
			switch rel.Type {
			case schema.HasMany, schema.Many2Many:

						objs      = make([]reflect.Value, 0, rValLen)
						fieldType = rel.Field.FieldType
						isPtr     = fieldType.Kind() == reflect.Ptr
					)

					if !isPtr {
						fieldType = reflect.PtrTo(fieldType)
					}

					elems := reflect.MakeSlice(reflect.SliceOf(fieldType), 0, 10)
					distinctElems := reflect.MakeSlice(reflect.SliceOf(fieldType), 0, 10)
					identityMap := map[string]bool{}