/
delete.go
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/
delete.go
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// Copyright (C) MongoDB, Inc. 2019-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// Code generated by operationgen. DO NOT EDIT.
package operation
import (
"context"
"errors"
"fmt"
"go.mongodb.org/mongo-driver/event"
"go.mongodb.org/mongo-driver/mongo/writeconcern"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
"go.mongodb.org/mongo-driver/x/mongo/driver"
"go.mongodb.org/mongo-driver/x/mongo/driver/description"
"go.mongodb.org/mongo-driver/x/mongo/driver/session"
)
// Delete performs a delete operation
type Delete struct {
deletes []bsoncore.Document
ordered *bool
session *session.Client
clock *session.ClusterClock
collection string
monitor *event.CommandMonitor
crypt *driver.Crypt
database string
deployment driver.Deployment
selector description.ServerSelector
writeConcern *writeconcern.WriteConcern
retry *driver.RetryMode
result DeleteResult
}
type DeleteResult struct {
// Number of documents successfully deleted.
N int32
}
func buildDeleteResult(response bsoncore.Document, srvr driver.Server) (DeleteResult, error) {
elements, err := response.Elements()
if err != nil {
return DeleteResult{}, err
}
dr := DeleteResult{}
for _, element := range elements {
switch element.Key() {
case "n":
var ok bool
dr.N, ok = element.Value().AsInt32OK()
if !ok {
err = fmt.Errorf("response field 'n' is type int32, but received BSON type %s", element.Value().Type)
}
}
}
return dr, nil
}
// NewDelete constructs and returns a new Delete.
func NewDelete(deletes ...bsoncore.Document) *Delete {
return &Delete{
deletes: deletes,
}
}
// Result returns the result of executing this operation.
func (d *Delete) Result() DeleteResult { return d.result }
func (d *Delete) processResponse(response bsoncore.Document, srvr driver.Server, desc description.Server) error {
var err error
d.result, err = buildDeleteResult(response, srvr)
return err
}
// Execute runs this operations and returns an error if the operaiton did not execute successfully.
func (d *Delete) Execute(ctx context.Context) error {
if d.deployment == nil {
return errors.New("the Delete operation must have a Deployment set before Execute can be called")
}
batches := &driver.Batches{
Identifier: "deletes",
Documents: d.deletes,
Ordered: d.ordered,
}
return driver.Operation{
CommandFn: d.command,
ProcessResponseFn: d.processResponse,
Batches: batches,
RetryMode: d.retry,
Type: driver.Write,
Client: d.session,
Clock: d.clock,
CommandMonitor: d.monitor,
Crypt: d.crypt,
Database: d.database,
Deployment: d.deployment,
Selector: d.selector,
WriteConcern: d.writeConcern,
}.Execute(ctx, nil)
}
func (d *Delete) command(dst []byte, desc description.SelectedServer) ([]byte, error) {
dst = bsoncore.AppendStringElement(dst, "delete", d.collection)
if d.ordered != nil {
dst = bsoncore.AppendBooleanElement(dst, "ordered", *d.ordered)
}
return dst, nil
}
// Deletes adds documents to this operation that will be used to determine what documents to delete when this operation
// is executed. These documents should have the form {q: <query>, limit: <integer limit>, collation: <document>}. The
// collation field is optional. If limit is 0, there will be no limit on the number of documents deleted.
func (d *Delete) Deletes(deletes ...bsoncore.Document) *Delete {
if d == nil {
d = new(Delete)
}
d.deletes = deletes
return d
}
// Ordered sets ordered. If true, when a write fails, the operation will return the error, when
// false write failures do not stop execution of the operation.
func (d *Delete) Ordered(ordered bool) *Delete {
if d == nil {
d = new(Delete)
}
d.ordered = &ordered
return d
}
// Session sets the session for this operation.
func (d *Delete) Session(session *session.Client) *Delete {
if d == nil {
d = new(Delete)
}
d.session = session
return d
}
// ClusterClock sets the cluster clock for this operation.
func (d *Delete) ClusterClock(clock *session.ClusterClock) *Delete {
if d == nil {
d = new(Delete)
}
d.clock = clock
return d
}
// Collection sets the collection that this command will run against.
func (d *Delete) Collection(collection string) *Delete {
if d == nil {
d = new(Delete)
}
d.collection = collection
return d
}
// CommandMonitor sets the monitor to use for APM events.
func (d *Delete) CommandMonitor(monitor *event.CommandMonitor) *Delete {
if d == nil {
d = new(Delete)
}
d.monitor = monitor
return d
}
// Crypt sets the Crypt object to use for automatic encryption and decryption.
func (d *Delete) Crypt(crypt *driver.Crypt) *Delete {
if d == nil {
d = new(Delete)
}
d.crypt = crypt
return d
}
// Database sets the database to run this operation against.
func (d *Delete) Database(database string) *Delete {
if d == nil {
d = new(Delete)
}
d.database = database
return d
}
// Deployment sets the deployment to use for this operation.
func (d *Delete) Deployment(deployment driver.Deployment) *Delete {
if d == nil {
d = new(Delete)
}
d.deployment = deployment
return d
}
// ServerSelector sets the selector used to retrieve a server.
func (d *Delete) ServerSelector(selector description.ServerSelector) *Delete {
if d == nil {
d = new(Delete)
}
d.selector = selector
return d
}
// WriteConcern sets the write concern for this operation.
func (d *Delete) WriteConcern(writeConcern *writeconcern.WriteConcern) *Delete {
if d == nil {
d = new(Delete)
}
d.writeConcern = writeConcern
return d
}
// Retry enables retryable mode for this operation. Retries are handled automatically in driver.Operation.Execute based
// on how the operation is set.
func (d *Delete) Retry(retry driver.RetryMode) *Delete {
if d == nil {
d = new(Delete)
}
d.retry = &retry
return d
}