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<?php
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Core\Cache;
use TYPO3\CMS\Core\Database\Event\AlterTableDefinitionStatementsEvent;
/**
* This service provides the sql schema for the caching framework
*/
final class DatabaseSchemaService
{
/**
* An event listener to inject the required caching framework database tables to the
* tables definitions string
*/
public function addCachingFrameworkDatabaseSchema(AlterTableDefinitionStatementsEvent $event): void
{
$event->addSqlData($this->getCachingFrameworkRequiredDatabaseSchema());
}
/**
* Get schema SQL of required cache framework tables.
*
* This method needs ext_localconf and ext_tables loaded!
*
* @return string Cache framework SQL
*/
private function getCachingFrameworkRequiredDatabaseSchema()
{
// Use new to circumvent the singleton pattern of CacheManager
$cacheManager = new CacheManager();
$cacheManager->setCacheConfigurations($GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']);
$tableDefinitions = '';
foreach ($GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations'] as $cacheName => $_) {
$backend = $cacheManager->getCache($cacheName)->getBackend();
if (method_exists($backend, 'getTableDefinitions')) {
$tableDefinitions .= LF . $backend->getTableDefinitions();
}
}
return $tableDefinitions;
}
}