mirror of
https://github.com/werkraum-media/events.git
synced 2024-11-27 01:36:11 +01:00
125 lines
3.8 KiB
PHP
125 lines
3.8 KiB
PHP
<?php
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namespace Wrm\Events\Service;
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use TYPO3\CMS\Core\Cache\CacheManager;
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use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface;
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use TYPO3\CMS\Core\Database\Connection;
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use TYPO3\CMS\Core\Database\ConnectionPool;
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use TYPO3\CMS\Core\TimeTracker\TimeTracker;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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class CategoryService
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{
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/** @var TimeTracker */
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protected $timeTracker;
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/** @var FrontendInterface */
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protected $cache;
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public function __construct()
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{
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$this->timeTracker = GeneralUtility::makeInstance(TimeTracker::class);
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$this->cache = GeneralUtility::makeInstance(CacheManager::class)->getCache('events_category');
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}
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/**
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* Get child categories by calling recursive function
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* and using the caching framework to save some queries
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*
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* @param string $idList list of category ids to start
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* @param int $counter
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* @return string comma separated list of category ids
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*/
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public function getChildrenCategories($idList, int $counter = 0): string
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{
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$cacheIdentifier = sha1('children' . $idList);
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$entry = $this->cache->get($cacheIdentifier);
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if (!$entry || is_string($entry) === false) {
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$entry = $this->getChildrenCategoriesRecursive($idList, $counter);
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$this->cache->set($cacheIdentifier, $entry);
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}
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return $entry;
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}
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/**
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* Get child categories
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*
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* @param string $idList list of category ids to start
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* @param int $counter
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* @return string comma separated list of category ids
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*/
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protected function getChildrenCategoriesRecursive($idList, $counter = 0): string
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{
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$result = [];
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// add id list to the output
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if ($counter === 0) {
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$newList = $this->getUidListFromRecords($idList);
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if ($newList) {
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$result[] = $newList;
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}
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}
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$queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
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->getQueryBuilderForTable('sys_category');
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$res = $queryBuilder
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->select('uid')
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->from('sys_category')
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->where($queryBuilder->expr()->in(
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'parent',
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$queryBuilder->createNamedParameter(explode(',', $idList), Connection::PARAM_INT_ARRAY)
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))
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->execute();
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while ($row = $res->fetch()) {
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if (is_array($row) === false) {
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continue;
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}
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$counter++;
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if ($counter > 10000) {
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$this->timeTracker->setTSlogMessage('EXT:dd_events: one or more recursive categories where found');
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return implode(',', $result);
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}
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$subcategories = $this->getChildrenCategoriesRecursive($row['uid'], $counter);
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$result[] = $row['uid'] . ($subcategories ? ',' . $subcategories : '');
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}
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$result = implode(',', $result);
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return $result;
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}
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/**
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* Fetch ids again from DB to avoid false positives
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*
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* @param string $idList
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* @return string
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*/
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protected function getUidListFromRecords(string $idList): string
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{
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$list = [];
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$queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
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->getQueryBuilderForTable('sys_category');
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$rows = $queryBuilder
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->select('uid')
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->from('sys_category')
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->where($queryBuilder->expr()->in(
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'uid',
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$queryBuilder->createNamedParameter(explode(',', $idList), Connection::PARAM_INT_ARRAY)
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))
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->execute()
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->fetchAll();
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foreach ($rows as $row) {
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if (is_array($row) === false) {
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continue;
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}
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$list[] = $row['uid'];
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}
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return implode(',', $list);
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}
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}
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