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<?php |
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/** |
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* Ember Db - An embeddable document database for php. |
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* Copyright (C) 2016 Alexander During |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* @link http://github.com/alexanderduring/php-ember-db |
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* @copyright Copyright (C) 2016 Alexander During |
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* @license http://www.gnu.org/licenses GNU General Public License v3.0 |
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*/ |
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namespace EmberDb\Filter\Operator; |
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/** |
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* The operator ElemMatch matches documents that contain an array field with at least one element |
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* that matches all the specified filter criteria. |
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* |
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* There are three types of possible operand values: |
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* |
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* 1. A single operator, e.g. {"list":{"$elemMatch":{"$lte":100}}} |
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* |
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* 2. An array of operators, e.g. {"list":{"$elemMatch":{"$lte":100,"$ne":55}}} |
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* Matches all documents that have at least on element in the field "list" |
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* that is a number below or equal to 100 and is not equal to 55. |
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* |
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* 2. |
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*/ |
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class ElemMatch extends AbstractOperator |
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{ |
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public function matches($value) |
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{ |
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// $value has to be an indexed array |
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if ($this->isList($value)) { |
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$isMatch = false; |
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foreach ($value as $listElement) { |
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$isMatch |= $this->matchesListElement($listElement); |
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} |
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} else { |
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$isMatch = false; |
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} |
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55
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return $isMatch; |
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} |
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public function isValid() |
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{ |
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$isValid = $this->isNumber($this->operand); |
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return $isValid; |
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} |
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68
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69
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70
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private function matchesListElement($listElement) |
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{ |
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$isMatch = $this->operand === $listElement; |
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return $isMatch; |
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} |
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77
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78
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private function isList($array) |
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{ |
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$isList = array() === $array || array_keys($array) === range(0, count($array) - 1); |
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return $isList; |
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} |
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} |
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alexanderduring /
php-ember-db
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