Ferran Recio
70 lines
2.0 KiB
PHP
70 lines
2.0 KiB
PHP
<?php
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/*
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* Copyright 2015-2017 MongoDB, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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namespace MongoDB\Model;
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use IteratorIterator;
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use Traversable;
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use function array_key_exists;
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/**
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* IndexInfoIterator for both listIndexes command and legacy query results.
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*
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* This common iterator may be used to wrap a Cursor returned by both the
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* listIndexes command and, for legacy servers, queries on the "system.indexes"
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* collection.
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*
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* @internal
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* @see \MongoDB\Collection::listIndexes()
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* @see https://github.com/mongodb/specifications/blob/master/source/enumerate-indexes.rst
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* @see http://docs.mongodb.org/manual/reference/command/listIndexes/
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* @see http://docs.mongodb.org/manual/reference/system-collections/
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*/
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class IndexInfoIteratorIterator extends IteratorIterator implements IndexInfoIterator
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{
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/** @var string|null $ns */
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private $ns;
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/**
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* @param string|null $ns
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*/
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public function __construct(Traversable $iterator, $ns = null)
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{
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parent::__construct($iterator);
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$this->ns = $ns;
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}
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/**
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* Return the current element as an IndexInfo instance.
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*
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* @see IndexInfoIterator::current()
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* @see http://php.net/iterator.current
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* @return IndexInfo
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*/
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public function current()
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{
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$info = parent::current();
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if (! array_key_exists('ns', $info) && $this->ns !== null) {
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$info['ns'] = $this->ns;
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}
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return new IndexInfo($info);
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}
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}
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