Files
ent/entc/gen/template/dialect/sql/errors.tmpl
Ariel Mashraki 4323141fe2 ent: add license and copyright to template files
Reviewed By: alexsn

Differential Revision: D17149292

fbshipit-source-id: 837de5fad988de1e54438b47584701f2fc35326d
2019-09-01 03:03:15 -07:00

27 lines
967 B
Cheetah

{{/*
Copyright 2019-present Facebook Inc. All rights reserved.
This source code is licensed under the Apache 2.0 license found
in the LICENSE file in the root directory of this source tree.
*/}}
{{/* custom errors and errors handlers from sql dialects */}}
{{ define "dialect/sql/errors" }}
func isSQLConstraintError(err error) (*ErrConstraintFailed, bool) {
// Error number 1062 is ER_DUP_ENTRY in mysql, and "UNIQUE constraint failed" is SQLite prefix.
if msg := err.Error(); strings.HasPrefix(msg, "Error 1062") || strings.HasPrefix(msg, "UNIQUE constraint failed") {
return &ErrConstraintFailed{msg, err}, true
}
return nil, false
}
// rollback calls to tx.Rollback and wraps the given error with the rollback error if occurred.
func rollback(tx dialect.Tx, err error) error {
if rerr := tx.Rollback(); rerr != nil {
err = fmt.Errorf("%s: %v", err.Error(), rerr)
}
if err, ok := isSQLConstraintError(err); ok {
return err
}
return err
}
{{ end }}