func (t *Table) setOnUpdateData(ctx context.Context, touched []bool, data []interface{}) error {
ucols := column.FindOnUpdateCols(t.Cols())
for _, c := range ucols {
if !touched[c.Offset] {
v, err := expressions.GetTimeValue(ctx, expressions.CurrentTimestamp, c.Tp, c.Decimal)
if err != nil {
return errors.Trace(err)
}
data[c.Offset] = v
touched[c.Offset] = true
}
}
return nil
}
func getDefaultValue(c *ConstraintOpt, tp byte, fsp int) (interface{}, error) {
if tp == mysql.TypeTimestamp || tp == mysql.TypeDatetime {
value, err := expressions.GetTimeValue(nil, c.Evalue, tp, fsp)
if err != nil {
return nil, errors.Trace(err)
}
// Value is nil means `default null`.
if value == nil {
return nil, nil
}
// If value is mysql.Time, convert it to string.
if vv, ok := value.(mysql.Time); ok {
return vv.String(), nil
}
return value, nil
}
return expressions.FastEval(c.Evalue), nil
}
func getDefaultValue(ctx context.Context, c *column.Col) (interface{}, bool, error) {
// Check no default value flag.
if mysql.HasNoDefaultValueFlag(c.Flag) {
return nil, false, errors.Errorf("Field '%s' doesn't have a default value", c.Name)
}
// Check and get timestamp/datetime default value.
if c.Tp == mysql.TypeTimestamp || c.Tp == mysql.TypeDatetime {
if c.DefaultValue == nil {
return nil, true, nil
}
value, err := expressions.GetTimeValue(ctx, c.DefaultValue, c.Tp, c.Decimal)
if err != nil {
return nil, true, errors.Errorf("Field '%s' get default value fail - %s", c.Name, errors.Trace(err))
}
return value, true, nil
}
return c.DefaultValue, true, nil
}
