mirror of
https://github.com/ent/ent.git
synced 2026-05-24 09:31:56 +03:00
e493574c83
Summary: Pull Request resolved: https://github.com/facebookincubator/ent/pull/123 Reviewed By: alexsn Differential Revision: D18117641 fbshipit-source-id: 8e520a1b1f70c7bea70f8a37ac698116e98a804e
112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
// Copyright (c) Facebook, Inc. and its affiliates. 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.
|
|
|
|
// Code generated (@generated) by entc, DO NOT EDIT.
|
|
|
|
package ent
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
|
|
"github.com/facebookincubator/ent/dialect"
|
|
"github.com/facebookincubator/ent/dialect/gremlin"
|
|
"github.com/facebookincubator/ent/dialect/gremlin/graph/dsl"
|
|
"github.com/facebookincubator/ent/dialect/gremlin/graph/dsl/__"
|
|
"github.com/facebookincubator/ent/dialect/gremlin/graph/dsl/g"
|
|
"github.com/facebookincubator/ent/dialect/sql"
|
|
"github.com/facebookincubator/ent/entc/integration/ent/file"
|
|
"github.com/facebookincubator/ent/entc/integration/ent/predicate"
|
|
)
|
|
|
|
// FileDelete is the builder for deleting a File entity.
|
|
type FileDelete struct {
|
|
config
|
|
predicates []predicate.File
|
|
}
|
|
|
|
// Where adds a new predicate to the delete builder.
|
|
func (fd *FileDelete) Where(ps ...predicate.File) *FileDelete {
|
|
fd.predicates = append(fd.predicates, ps...)
|
|
return fd
|
|
}
|
|
|
|
// Exec executes the deletion query and returns how many vertices were deleted.
|
|
func (fd *FileDelete) Exec(ctx context.Context) (int, error) {
|
|
switch fd.driver.Dialect() {
|
|
case dialect.MySQL, dialect.Postgres, dialect.SQLite:
|
|
return fd.sqlExec(ctx)
|
|
case dialect.Gremlin:
|
|
return fd.gremlinExec(ctx)
|
|
default:
|
|
return 0, errors.New("ent: unsupported dialect")
|
|
}
|
|
}
|
|
|
|
// ExecX is like Exec, but panics if an error occurs.
|
|
func (fd *FileDelete) ExecX(ctx context.Context) int {
|
|
n, err := fd.Exec(ctx)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return n
|
|
}
|
|
|
|
func (fd *FileDelete) sqlExec(ctx context.Context) (int, error) {
|
|
var res sql.Result
|
|
selector := sql.Select().From(sql.Table(file.Table))
|
|
for _, p := range fd.predicates {
|
|
p(selector)
|
|
}
|
|
query, args := sql.Delete(file.Table).FromSelect(selector).Query()
|
|
if err := fd.driver.Exec(ctx, query, args, &res); err != nil {
|
|
return 0, err
|
|
}
|
|
affected, err := res.RowsAffected()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return int(affected), nil
|
|
}
|
|
|
|
func (fd *FileDelete) gremlinExec(ctx context.Context) (int, error) {
|
|
res := &gremlin.Response{}
|
|
query, bindings := fd.gremlin().Query()
|
|
if err := fd.driver.Exec(ctx, query, bindings, res); err != nil {
|
|
return 0, err
|
|
}
|
|
return res.ReadInt()
|
|
}
|
|
|
|
func (fd *FileDelete) gremlin() *dsl.Traversal {
|
|
t := g.V().HasLabel(file.Label)
|
|
for _, p := range fd.predicates {
|
|
p(t)
|
|
}
|
|
return t.SideEffect(__.Drop()).Count()
|
|
}
|
|
|
|
// FileDeleteOne is the builder for deleting a single File entity.
|
|
type FileDeleteOne struct {
|
|
fd *FileDelete
|
|
}
|
|
|
|
// Exec executes the deletion query.
|
|
func (fdo *FileDeleteOne) Exec(ctx context.Context) error {
|
|
n, err := fdo.fd.Exec(ctx)
|
|
switch {
|
|
case err != nil:
|
|
return err
|
|
case n == 0:
|
|
return &ErrNotFound{file.Label}
|
|
default:
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// ExecX is like Exec, but panics if an error occurs.
|
|
func (fdo *FileDeleteOne) ExecX(ctx context.Context) {
|
|
fdo.fd.ExecX(ctx)
|
|
}
|