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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\Model;
use IteratorIterator;
use Traversable;
/**
* CollectionInfoIterator for listCollections command results.
*
* This iterator may be used to wrap a Cursor returned by the listCollections
* command.
*
* @internal
* @see \MongoDB\Database::listCollections()
* @see https://github.com/mongodb/specifications/blob/master/source/enumerate-collections.rst
* @see https://mongodb.com/docs/manual/reference/command/listCollections/
*/
class CollectionInfoCommandIterator extends IteratorIterator implements CollectionInfoIterator
{
/** @var string|null */
private $databaseName;
public function __construct(Traversable $iterator, ?string $databaseName = null)
{
parent::__construct($iterator);
$this->databaseName = $databaseName;
}
/**
* Return the current element as a CollectionInfo instance.
*
* @see CollectionInfoIterator::current()
* @see https://php.net/iterator.current
*/
public function current(): CollectionInfo
{
$info = parent::current();
if ($this->databaseName !== null && isset($info['idIndex']) && ! isset($info['idIndex']['ns'])) {
$info['idIndex']['ns'] = $this->databaseName . '.' . $info['name'];
}
return new CollectionInfo($info);
}
}
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