1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
// 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.
// Code generated by entc, DO NOT EDIT.
package ent
import (
"context"
"fmt"
"github.com/facebook/ent/dialect/gremlin"
"github.com/facebook/ent/dialect/gremlin/graph/dsl"
"github.com/facebook/ent/dialect/gremlin/graph/dsl/__"
"github.com/facebook/ent/dialect/gremlin/graph/dsl/g"
"github.com/facebook/ent/entc/integration/gremlin/ent/pet"
"github.com/facebook/ent/entc/integration/gremlin/ent/predicate"
)
// PetDelete is the builder for deleting a Pet entity.
type PetDelete struct {
config
hooks []Hook
mutation *PetMutation
}
// Where adds a new predicate to the PetDelete builder.
func (pd *PetDelete) Where(ps ...predicate.Pet) *PetDelete {
pd.mutation.predicates = append(pd.mutation.predicates, ps...)
return pd
}
// Exec executes the deletion query and returns how many vertices were deleted.
func (pd *PetDelete) Exec(ctx context.Context) (int, error) {
var (
err error
affected int
)
if len(pd.hooks) == 0 {
affected, err = pd.gremlinExec(ctx)
} else {
var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
mutation, ok := m.(*PetMutation)
if !ok {
return nil, fmt.Errorf("unexpected mutation type %T", m)
}
pd.mutation = mutation
affected, err = pd.gremlinExec(ctx)
mutation.done = true
return affected, err
})
for i := len(pd.hooks) - 1; i >= 0; i-- {
mut = pd.hooks[i](mut)
}
if _, err := mut.Mutate(ctx, pd.mutation); err != nil {
return 0, err
}
}
return affected, err
}
// ExecX is like Exec, but panics if an error occurs.
func (pd *PetDelete) ExecX(ctx context.Context) int {
n, err := pd.Exec(ctx)
if err != nil {
panic(err)
}
return n
}
func (pd *PetDelete) gremlinExec(ctx context.Context) (int, error) {
res := &gremlin.Response{}
query, bindings := pd.gremlin().Query()
if err := pd.driver.Exec(ctx, query, bindings, res); err != nil {
return 0, err
}
return res.ReadInt()
}
func (pd *PetDelete) gremlin() *dsl.Traversal {
t := g.V().HasLabel(pet.Label)
for _, p := range pd.mutation.predicates {
p(t)
}
return t.SideEffect(__.Drop()).Count()
}
// PetDeleteOne is the builder for deleting a single Pet entity.
type PetDeleteOne struct {
pd *PetDelete
}
// Exec executes the deletion query.
func (pdo *PetDeleteOne) Exec(ctx context.Context) error {
n, err := pdo.pd.Exec(ctx)
switch {
case err != nil:
return err
case n == 0:
return &NotFoundError{pet.Label}
default:
return nil
}
}
// ExecX is like Exec, but panics if an error occurs.
func (pdo *PetDeleteOne) ExecX(ctx context.Context) {
pdo.pd.ExecX(ctx)
}
|
