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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
<?php
/*
* Copyright 2015-2017 MongoDB, Inc.
*
* 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace MongoDB\Operation;
use MongoDB\Driver\Command;
use MongoDB\Driver\Exception\RuntimeException as DriverRuntimeException;
use MongoDB\Driver\Server;
use MongoDB\Driver\Session;
use MongoDB\Driver\WriteConcern;
use MongoDB\Exception\InvalidArgumentException;
use MongoDB\Exception\UnsupportedException;
use function current;
use function is_array;
use function MongoDB\server_supports_feature;
/**
* Operation for the drop command.
*
* @api
* @see \MongoDB\Collection::drop()
* @see \MongoDB\Database::dropCollection()
* @see http://docs.mongodb.org/manual/reference/command/drop/
*/
class DropCollection implements Executable
{
/** @var string */
private static $errorMessageNamespaceNotFound = 'ns not found';
/** @var integer */
private static $wireVersionForWriteConcern = 5;
/** @var string */
private $databaseName;
/** @var string */
private $collectionName;
/** @var array */
private $options;
/**
* Constructs a drop command.
*
* Supported options:
*
* * session (MongoDB\Driver\Session): Client session.
*
* Sessions are not supported for server versions < 3.6.
*
* * typeMap (array): Type map for BSON deserialization. This will be used
* for the returned command result document.
*
* * writeConcern (MongoDB\Driver\WriteConcern): Write concern.
*
* This is not supported for server versions < 3.4 and will result in an
* exception at execution time if used.
*
* @param string $databaseName Database name
* @param string $collectionName Collection name
* @param array $options Command options
* @throws InvalidArgumentException for parameter/option parsing errors
*/
public function __construct($databaseName, $collectionName, array $options = [])
{
if (isset($options['session']) && ! $options['session'] instanceof Session) {
throw InvalidArgumentException::invalidType('"session" option', $options['session'], Session::class);
}
if (isset($options['typeMap']) && ! is_array($options['typeMap'])) {
throw InvalidArgumentException::invalidType('"typeMap" option', $options['typeMap'], 'array');
}
if (isset($options['writeConcern']) && ! $options['writeConcern'] instanceof WriteConcern) {
throw InvalidArgumentException::invalidType('"writeConcern" option', $options['writeConcern'], WriteConcern::class);
}
if (isset($options['writeConcern']) && $options['writeConcern']->isDefault()) {
unset($options['writeConcern']);
}
$this->databaseName = (string) $databaseName;
$this->collectionName = (string) $collectionName;
$this->options = $options;
}
/**
* Execute the operation.
*
* @see Executable::execute()
* @param Server $server
* @return array|object Command result document
* @throws UnsupportedException if writeConcern is used and unsupported
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function execute(Server $server)
{
if (isset($this->options['writeConcern']) && ! server_supports_feature($server, self::$wireVersionForWriteConcern)) {
throw UnsupportedException::writeConcernNotSupported();
}
$inTransaction = isset($this->options['session']) && $this->options['session']->isInTransaction();
if ($inTransaction && isset($this->options['writeConcern'])) {
throw UnsupportedException::writeConcernNotSupportedInTransaction();
}
$command = new Command(['drop' => $this->collectionName]);
try {
$cursor = $server->executeWriteCommand($this->databaseName, $command, $this->createOptions());
} catch (DriverRuntimeException $e) {
/* The server may return an error if the collection does not exist.
* Check for an error message (unfortunately, there isn't a code)
* and NOP instead of throwing.
*/
if ($e->getMessage() === self::$errorMessageNamespaceNotFound) {
return (object) ['ok' => 0, 'errmsg' => self::$errorMessageNamespaceNotFound];
}
throw $e;
}
if (isset($this->options['typeMap'])) {
$cursor->setTypeMap($this->options['typeMap']);
}
return current($cursor->toArray());
}
/**
* Create options for executing the command.
*
* @see http://php.net/manual/en/mongodb-driver-server.executewritecommand.php
* @return array
*/
private function createOptions()
{
$options = [];
if (isset($this->options['session'])) {
$options['session'] = $this->options['session'];
}
if (isset($this->options['writeConcern'])) {
$options['writeConcern'] = $this->options['writeConcern'];
}
return $options;
}
}