callbackTypeBeforeSave   callbackType = "BeforeSave"
	callbackTypeAfterSave    callbackType = "AfterSave"
	callbackTypeBeforeDelete callbackType = "BeforeDelete"
	callbackTypeAfterDelete  callbackType = "AfterDelete"
	callbackTypeAfterFind    callbackType = "AfterFind"
)

// ErrUnsupportedDataType unsupported data type
var ErrUnsupportedDataType = errors.New("unsupported data type")

type Schema struct {

func (s *Product) BeforeDelete(tx *gorm.DB) (err error) {
	if s.Code == "dont_delete" {
		err = errors.New("can't delete")
	}
	s.BeforeDeleteCallTimes = s.BeforeDeleteCallTimes + 1
	return
}

func (s *Product) AfterDelete(tx *gorm.DB) (err error) {
	if s.Code == "after_delete_error" {
		err = errors.New("can't delete")
	}
	s.AfterDeleteCallTimes = s.AfterDeleteCallTimes + 1
	return
}

func (s *Product) GetCallTimes() []int64 {