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See Release Notes

  • Bug fixes for general core bugs in 3.10.x will end 8 November 2021 (12 months).
  • Bug fixes for security issues in 3.10.x will end 9 May 2022 (18 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
<?php
/*
 * Copyright 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;

use IteratorAggregate;
use stdClass;
use Traversable;
use function call_user_func;

/**
 * Result class for mapReduce command results.
 *
 * This class allows for iteration of mapReduce results irrespective of the
 * output method (e.g. inline, collection) via the IteratorAggregate interface.
 * It also provides access to command statistics.
 *
 * @api
 * @see \MongoDB\Collection::mapReduce()
 * @see https://docs.mongodb.com/manual/reference/command/mapReduce/
 */
class MapReduceResult implements IteratorAggregate
{
    /** @var callable */
    private $getIterator;

    /** @var integer */
    private $executionTimeMS;

    /** @var array */
    private $counts;

    /** @var array */
    private $timing;

    /**
     * @internal
     * @param callable $getIterator Callback that returns a Traversable for mapReduce results
     * @param stdClass $result      Result document from the mapReduce command
     */
    public function __construct(callable $getIterator, stdClass $result)
    {
        $this->getIterator = $getIterator;
< $this->executionTimeMS = (integer) $result->timeMillis; < $this->counts = (array) $result->counts;
> $this->executionTimeMS = isset($result->timeMillis) ? (integer) $result->timeMillis : 0; > $this->counts = isset($result->counts) ? (array) $result->counts : [];
$this->timing = isset($result->timing) ? (array) $result->timing : []; } /** * Returns various count statistics from the mapReduce command. * * @return array */ public function getCounts() { return $this->counts; } /** * Return the command execution time in milliseconds. * * @return integer */ public function getExecutionTimeMS() { return (integer) $this->executionTimeMS; } /** * Return the mapReduce results as a Traversable. * * @see http://php.net/iteratoraggregate.getiterator * @return Traversable */ public function getIterator() { return call_user_func($this->getIterator); } /** * Returns various timing statistics from the mapReduce command. * * Note: timing statistics are only available if the mapReduce command's * "verbose" option was true; otherwise, an empty array will be returned. * * @return array */ public function getTiming() { return $this->timing; } }