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<?php
/*
* Copyright 2015-present 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
*
* https://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\CommandException;
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;
/**
* Operation for the drop command.
*
* @api
* @see \MongoDB\Collection::drop()
* @see \MongoDB\Database::dropCollection()
* @see https://mongodb.com/docs/manual/reference/command/drop/
*/
class DropCollection implements Executable
{
/** @var integer */
private static $errorCodeNamespaceNotFound = 26;
/** @var string */
private $databaseName;
/** @var string */
private $collectionName;
/** @var array */
private $options;
/**
* Constructs a drop command.
*
* Supported options:
*
* * comment (mixed): BSON value to attach as a comment to this command.
*
* This is not supported for servers versions < 4.4.
*
* * session (MongoDB\Driver\Session): Client session.
*
* * typeMap (array): Type map for BSON deserialization. This will be used
* for the returned command result document.
*
* * writeConcern (MongoDB\Driver\WriteConcern): Write concern.
*
* @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(string $databaseName, string $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 = $databaseName;
$this->collectionName = $collectionName;
$this->options = $options;
}
/**
* Execute the operation.
*
* @see Executable::execute()
* @return array|object Command result document
* @throws UnsupportedException if write concern is used and unsupported
* @throws DriverRuntimeException for other driver errors (e.g. connection errors)
*/
public function execute(Server $server)
{
$inTransaction = isset($this->options['session']) && $this->options['session']->isInTransaction();
if ($inTransaction && isset($this->options['writeConcern'])) {
throw UnsupportedException::writeConcernNotSupportedInTransaction();
}
try {
$cursor = $server->executeWriteCommand($this->databaseName, $this->createCommand(), $this->createOptions());
} catch (CommandException $e) {
/* The server may return an error if the collection does not exist.
* Check for an error code and return the command reply instead of
* throwing. */
if ($e->getCode() === self::$errorCodeNamespaceNotFound) {
return $e->getResultDocument();
}
throw $e;
}
if (isset($this->options['typeMap'])) {
$cursor->setTypeMap($this->options['typeMap']);
}
return current($cursor->toArray());
}
/**
* Create the drop command.
*/
private function createCommand(): Command
{
$cmd = ['drop' => $this->collectionName];
if (isset($this->options['comment'])) {
$cmd['comment'] = $this->options['comment'];
}
return new Command($cmd);
}
/**
* Create options for executing the command.
*
* @see https://php.net/manual/en/mongodb-driver-server.executewritecommand.php
*/
private function createOptions(): array
{
$options = [];
if (isset($this->options['session'])) {
$options['session'] = $this->options['session'];
}
if (isset($this->options['writeConcern'])) {
$options['writeConcern'] = $this->options['writeConcern'];
}
return $options;
}
}
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