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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the TYPO3 CMS project. |
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* |
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* It is free software; you can redistribute it and/or modify it under |
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* the terms of the GNU General Public License, either version 2 |
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* of the License, or any later version. |
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* |
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* For the full copyright and license information, please read the |
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* LICENSE.txt file that was distributed with this source code. |
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* |
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* The TYPO3 project - inspiring people to share! |
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*/ |
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namespace ApacheSolrForTypo3\Solr\System\Object; |
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use InvalidArgumentException; |
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use stdClass; |
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use TYPO3\CMS\Core\SingletonInterface; |
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use TYPO3\CMS\Core\Utility\GeneralUtility; |
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/** |
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* Abstract class to hold the logic to register and retrieve different classes |
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* for a specific key. |
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* |
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* Can be used to retrieve different "strategies" for the same thing. |
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* |
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* @author Timo Hund <[email protected]> |
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*/ |
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class AbstractClassRegistry implements SingletonInterface |
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{ |
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/** |
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* Holds the mapping key => className |
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* @var array |
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*/ |
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protected array $classMap = []; |
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/** |
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* Name for the default implementation |
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* |
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* @var string |
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*/ |
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protected string $defaultClass = stdClass::class; |
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/** |
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* Retrieves an instance for a registered type. |
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* |
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* @param string $type |
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* @return object |
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*/ |
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public function getInstance(string $type): object |
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{ |
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$className = $this->resolveClassName($type); |
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return $this->createInstance($className); |
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} |
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/** |
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* @param string $type |
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* @return string |
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*/ |
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protected function resolveClassName(string $type): string |
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{ |
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$className = $this->defaultClass; |
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if (isset($this->classMap[$type])) { |
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return $this->classMap[$type]; |
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} |
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return $className; |
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} |
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/** |
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* Create an instance of a certain class |
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* |
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* @param string $className |
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* @return object |
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*/ |
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protected function createInstance(string $className): object |
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{ |
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return GeneralUtility::makeInstance($className); |
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} |
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/** |
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* Can be used to register an implementation in the classMap. |
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* |
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* @param string $className |
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* @param string $type |
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* @param string $requiredBaseClass |
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*/ |
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protected function register(string $className, string $type, string $requiredBaseClass): void |
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{ |
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// check if the class is available for TYPO3 before registering the driver |
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if (!class_exists($className)) { |
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throw new InvalidArgumentException('Class ' . $className . ' does not exist.', 1462883324); |
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} |
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if (!is_subclass_of($className, $requiredBaseClass)) { |
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throw new InvalidArgumentException('Parser ' . $className . ' needs to extend the ' . $requiredBaseClass . '.', 1462883325); |
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} |
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$this->classMap[$type] = $className; |
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} |
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} |
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TYPO3-Solr /
ext-solr
