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<?php |
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namespace ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Result\Parser; |
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/*************************************************************** |
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* Copyright notice |
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* |
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* (c) 2017 Timo Hund <[email protected]> |
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* |
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* All rights reserved |
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* |
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* This script is part of the TYPO3 project. The TYPO3 project is |
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* 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 2 of the License, or |
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* (at your option) any later version. |
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* |
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* The GNU General Public License can be found at |
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* http://www.gnu.org/copyleft/gpl.html. |
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* |
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* This script 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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* This copyright notice MUST APPEAR in all copies of the script! |
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***************************************************************/ |
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use ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\SearchResultSet; |
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use ApacheSolrForTypo3\Solr\System\Configuration\TypoScriptConfiguration; |
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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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* Class ResultParserRegistry |
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* |
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* @author Frans Saris <[email protected]> |
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* @author Timo Hund <[email protected]> |
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*/ |
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class ResultParserRegistry implements SingletonInterface |
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{ |
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/** |
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* Array of available parser classNames |
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* |
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* @var array |
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*/ |
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protected $parsers = [ |
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100 => DefaultResultParser::class, |
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]; |
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/** |
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* @var AbstractResultParser[] |
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*/ |
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protected $parserInstances; |
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/** |
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* @var TypoScriptConfiguration |
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*/ |
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protected $typoScriptConfiguration; |
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/** |
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* ResultParserRegistry constructor. |
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* @param TypoScriptConfiguration $configuration |
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*/ |
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public function __construct(TypoScriptConfiguration $configuration) |
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{ |
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$this->typoScriptConfiguration = $configuration; |
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} |
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/** |
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* Get registered parser classNames |
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* |
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* @return array |
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*/ |
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public function getParsers() |
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{ |
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return $this->parsers; |
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} |
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/** |
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* Can be used to register a custom parser. |
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* |
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* @param string $className classname of the parser that should be used |
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* @param int $priority higher priority means more important |
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* @throws \InvalidArgumentException |
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*/ |
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public function registerParser($className, $priority) |
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{ |
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// check if the class is available for TYPO3 before registering the driver |
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if (!class_exists($className)) { |
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throw new \InvalidArgumentException('Class ' . $className . ' does not exist.', 1468863997); |
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} |
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if (!is_subclass_of($className, AbstractResultParser::class)) { |
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throw new \InvalidArgumentException('Parser ' . $className . ' needs to implement the AbstractResultParser.', 1468863998); |
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} |
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if (array_key_exists((int)$priority, $this->parsers)) { |
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throw new \InvalidArgumentException('There is already a parser registerd with priority ' . (int)$priority . '.', 1468863999); |
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} |
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$this->parsers[(int)$priority] = $className; |
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} |
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/** |
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* @return AbstractResultParser[] |
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*/ |
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public function getParserInstances() |
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{ |
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if ($this->parserInstances === null) { |
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ksort($this->parsers); |
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$orderedParsers = array_reverse($this->parsers); |
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foreach ($orderedParsers as $className) { |
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$this->parserInstances[] = $this->createParserInstance($className); |
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} |
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} |
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return $this->parserInstances; |
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} |
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/** |
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* @param SearchResultSet $resultSet |
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* @return AbstractResultParser|null |
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*/ |
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public function getParser(SearchResultSet $resultSet) |
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{ |
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/** @var AbstractResultParser $parser */ |
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foreach ($this->getParserInstances() as $parser) { |
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if ($parser->canParse($resultSet)) { |
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return $parser; |
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} |
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} |
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return null; |
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} |
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/** |
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* Create an instance of a certain parser class |
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* |
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* @return AbstractResultParser |
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*/ |
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protected function createParserInstance($className) |
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{ |
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return GeneralUtility::makeInstance($className, $this->typoScriptConfiguration); |
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} |
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} |
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dkd-kaehm /
ext-solr
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