129 lines
		
	
	
		
			4.0 KiB
		
	
	
	
		
			PHP
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			129 lines
		
	
	
		
			4.0 KiB
		
	
	
	
		
			PHP
		
	
	
		
			Executable File
		
	
	
	
	
<?php
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namespace WapplerSystems\Meilisearch\FieldProcessor;
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/***************************************************************
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 *  Copyright notice
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 *
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 *  (c) 2013-2015 Steffen Ritter <steffen.ritter@typo3.org>
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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 3 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 WapplerSystems\Meilisearch\System\Records\SystemCategory\SystemCategoryRepository;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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/**
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 * This Processor takes a UID of sys_category, and resolves its rootline in solr notation.
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 *
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 * Format of this field corresponds to http://wiki.apache.org/solr/HierarchicalFaceting
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 *
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 * Let's say we have a category with uid 111 which is a sub category like shown in this tree:
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 *
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 * 1
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 * |-10
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 *   |-100
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 *     |-111
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 *
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 * then we get a rootline 1/10/100/111
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 *
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 * In Solr hierarchy notation, we get
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 *
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 * 0-1
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 * 1-1/10
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 * 2-1/10/100
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 * 3-1/10/100/11
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 *
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 * which is finally saved in a multi-value field.
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 *
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 * @author Steffen Ritter <steffen.ritter@typo3.org>
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 */
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class CategoryUidToHierarchy extends AbstractHierarchyProcessor implements FieldProcessor
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{
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    /**
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     * @var SystemCategoryRepository
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     */
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    protected $systemCategoryRepository;
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    /**
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     * CategoryUidToHierarchy constructor.
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     *
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     * @param SystemCategoryRepository|null $systemCategoryRepository
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     */
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    public function __construct(SystemCategoryRepository $systemCategoryRepository = null)
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    {
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        $this->systemCategoryRepository = $systemCategoryRepository ?? GeneralUtility::makeInstance(SystemCategoryRepository::class);
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    }
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    /**
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     * Expects a uid ID of a category. Returns a Solr hierarchy notation for the
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     * rootline of the category ID.
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     *
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     * @param array $values Array of values, an array because of multivalued fields
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     * @return array Modified array of values
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     */
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    public function process(array $values)
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    {
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        $results = [];
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        foreach ($values as $value) {
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            $results = array_merge($results,
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                $this->getSolrRootlineForCategoryId($value));
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        }
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        return $results;
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    }
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    /**
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     * Returns a Solr hierarchy notation string for rootline of given category uid.
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     *
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     * @param int $categoryId Category ID to get a rootline as Solr hierarchy for
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     * @return array Rootline as Solr hierarchy array
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     */
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    protected function getSolrRootlineForCategoryId($categoryId)
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    {
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        $categoryIdRootline = $this->buildCategoryIdRootline($categoryId);
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        $solrRootline = $this->buildSolrHierarchyFromIdRootline($categoryIdRootline);
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        return $solrRootline;
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    }
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    /**
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     * Builds a category's rootline of parent category Ids
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     *
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     * @param int $uid The category ID to build the rootline for
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     * @return array Category ID rootline as array
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     */
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    protected function buildCategoryIdRootline($uid)
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    {
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        $rootlineIds = [];
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        $parentCategory = intval($uid);
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        while ($parentCategory !== 0) {
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            $rootlineIds[] = $parentCategory;
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            $childCategory = $this->systemCategoryRepository->findOneByUid($parentCategory);
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            if ($childCategory === null) {
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                $parentCategory = 0;
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            } else {
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                $parentCategory = intval($childCategory['parent']);
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            }
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        }
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        krsort($rootlineIds);
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        return array_values($rootlineIds);
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    }
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}
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