mirror of
https://github.com/ent/ent.git
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114 lines
2.8 KiB
Go
114 lines
2.8 KiB
Go
// Copyright 2019-present Facebook Inc. All rights reserved.
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// This source code is licensed under the Apache 2.0 license found
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// in the LICENSE file in the root directory of this source tree.
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// Code generated by ent, DO NOT EDIT.
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package ent
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import (
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"context"
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"fmt"
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"entgo.io/ent/dialect/gremlin"
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"entgo.io/ent/dialect/gremlin/graph/dsl"
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"entgo.io/ent/dialect/gremlin/graph/dsl/__"
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"entgo.io/ent/dialect/gremlin/graph/dsl/g"
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"entgo.io/ent/entc/integration/gremlin/ent/file"
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"entgo.io/ent/entc/integration/gremlin/ent/predicate"
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)
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// FileDelete is the builder for deleting a File entity.
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type FileDelete struct {
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config
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hooks []Hook
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mutation *FileMutation
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}
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// Where appends a list predicates to the FileDelete builder.
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func (fd *FileDelete) Where(ps ...predicate.File) *FileDelete {
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fd.mutation.Where(ps...)
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return fd
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}
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// Exec executes the deletion query and returns how many vertices were deleted.
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func (fd *FileDelete) Exec(ctx context.Context) (int, error) {
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var (
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err error
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affected int
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)
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if len(fd.hooks) == 0 {
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affected, err = fd.gremlinExec(ctx)
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} else {
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var mut Mutator = MutateFunc(func(ctx context.Context, m Mutation) (Value, error) {
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mutation, ok := m.(*FileMutation)
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if !ok {
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return nil, fmt.Errorf("unexpected mutation type %T", m)
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}
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fd.mutation = mutation
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affected, err = fd.gremlinExec(ctx)
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mutation.done = true
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return affected, err
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})
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for i := len(fd.hooks) - 1; i >= 0; i-- {
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if fd.hooks[i] == nil {
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return 0, fmt.Errorf("ent: uninitialized hook (forgotten import ent/runtime?)")
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}
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mut = fd.hooks[i](mut)
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}
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if _, err := mut.Mutate(ctx, fd.mutation); err != nil {
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return 0, err
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}
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}
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return affected, err
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}
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// ExecX is like Exec, but panics if an error occurs.
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func (fd *FileDelete) ExecX(ctx context.Context) int {
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n, err := fd.Exec(ctx)
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if err != nil {
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panic(err)
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}
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return n
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}
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func (fd *FileDelete) gremlinExec(ctx context.Context) (int, error) {
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res := &gremlin.Response{}
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query, bindings := fd.gremlin().Query()
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if err := fd.driver.Exec(ctx, query, bindings, res); err != nil {
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return 0, err
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}
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return res.ReadInt()
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}
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func (fd *FileDelete) gremlin() *dsl.Traversal {
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t := g.V().HasLabel(file.Label)
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for _, p := range fd.mutation.predicates {
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p(t)
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}
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return t.SideEffect(__.Drop()).Count()
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}
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// FileDeleteOne is the builder for deleting a single File entity.
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type FileDeleteOne struct {
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fd *FileDelete
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}
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// Exec executes the deletion query.
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func (fdo *FileDeleteOne) Exec(ctx context.Context) error {
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n, err := fdo.fd.Exec(ctx)
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switch {
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case err != nil:
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return err
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case n == 0:
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return &NotFoundError{file.Label}
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default:
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return nil
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}
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}
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// ExecX is like Exec, but panics if an error occurs.
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func (fdo *FileDeleteOne) ExecX(ctx context.Context) {
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fdo.fd.ExecX(ctx)
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}
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