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| <?php | |
| /** | |
| * Copyright 2018 University of Liverpool | |
| * | |
| * 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 pgb_liv\php_ms\Utility\Sort; | |
| /** | |
| * Abstract class containing generic sorting methods | |
| * | |
| * @author Andrew Collins | |
| */ | |
| abstract class AbstractSort implements SortInterface | |
| { | |
| protected $returnTrue = - 1; | |
| protected $returnFalse = 1; | |
| private $method; | |
| private $type; | |
| public function __construct($method, $order) | |
| { | |
| if ($order == SORT_ASC) { | |
| $this->returnTrue = 1; | |
| $this->returnFalse = - 1; | |
| } | |
| // Validate method? | |
| $this->method = $method; | |
| $clazz = get_class($this); | |
| if (defined($clazz . '::DATA_TYPE')) { | |
| $this->type = $clazz::DATA_TYPE; | |
| } | |
| } | |
| public function sort(&$array, $validate = true) | |
| { | |
| if ($validate) { | |
| $this->validate($array); | |
| } | |
| usort($array, array( | |
| $this, | |
| $this->method | |
| )); | |
| } | |
| protected function validate($array) | |
| { | |
| if (is_null($this->type)) { | |
| return false; | |
| } | |
| foreach ($array as $key => $element) { | |
| if (is_a($element, $this->type)) { | |
| continue; | |
| } | |
| throw new \InvalidArgumentException( | |
| 'Type=' . $this->type . ' expected for element key=' . $key . ', type=' . gettype($element) . ' found'); | |
| } | |
| return true; | |
| } | |
| } |