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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; |
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use EmberDb\Filter\Operator\ElemMatch; |
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use EmberDb\Filter\Operator\GreaterThan; |
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use EmberDb\Filter\Operator\GreaterThanEqual; |
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use EmberDb\Filter\Operator\LowerThan; |
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use EmberDb\Filter\Operator\LowerThanEqual; |
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use EmberDb\Filter\Operator\NotEqual; |
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use EmberDb\Logger; |
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class OperatorManager |
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{ |
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public function isOperator($operatorArray) |
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{ |
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$operator = $this->getOperator($operatorArray); |
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$isOperator = in_array($operator, array('$gt', '$gte', '$lt', '$lte', '$ne', '$elemMatch')); |
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if ($isOperator) { |
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Logger::log('"'.$operator.'" is in '.json_encode(array('$gt', '$gte', '$lt', '$lte', '$ne', '$elemMatch')).', so it is an operator.\n'); |
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} |
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return $isOperator; |
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} |
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public function buildOperator($operatorArray) |
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{ |
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switch ($this->getOperator($operatorArray)) { |
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case '$gt': |
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$operator = new GreaterThan($this->getOperand($operatorArray)); |
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break; |
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case '$gte': |
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$operator = new GreaterThanEqual($this->getOperand($operatorArray)); |
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break; |
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case '$lt': |
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$operator = new LowerThan($this->getOperand($operatorArray)); |
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break; |
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case '$lte': |
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$operator = new LowerThanEqual($this->getOperand($operatorArray)); |
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break; |
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case '$ne': |
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$operator = new NotEqual($this->getOperand($operatorArray)); |
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break; |
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case '$elemMatch': |
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$operator = new ElemMatch($this->getOperand($operatorArray)); |
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break; |
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default: |
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$operator = null; |
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} |
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return $operator; |
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} |
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private function getOperator($operatorArray) |
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{ |
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if (is_array($operatorArray) && count($operatorArray) == 1) { |
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$operator = array_keys($operatorArray)[0]; |
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} else { |
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$operator = null; |
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} |
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return $operator; |
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} |
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private function getOperand($operatorArray) |
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{ |
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if (is_array($operatorArray) && count($operatorArray) == 1) { |
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$operand = $operatorArray[$this->getOperator($operatorArray)]; |
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} else { |
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$operand = null; |
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} |
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return $operand; |
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} |
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} |
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