ClassInfoCache.php

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<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2010 Extbase Team
*  All rights reserved
*
*  This class is a backport of the corresponding class of FLOW3.
*  All credits go to the v5 team.
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/

/**
 * Simple Cache for classInfos
 *
 * @author Daniel Pötzinger
 */
class Tx_Extbase_Object_Container_ClassInfoCache {

    /**
     *
     * @var array
     */
    private $level1Cache=array();

    /**
     *
     * @var t3lib_cache_frontend_VariableFrontend
     */
    private $level2Cache;

    /**
     * constructor
     */
    public function __construct() {
        $this->initializeLevel2Cache();
    }

    /**
     * checks if cacheentry exists for id
     * @param string $id
     */
    public function has($id) {
        return isset($this->level1Cache[$id]) || $this->level2Cache->has($id);
    }

    /**
     * Gets the cache for the id
     * @param string $id
     */
    public function get($id) {
        if (!isset($this->level1Cache[$id])) {
            $this->level1Cache[$id] = $this->level2Cache->get($id);
        }
        return $this->level1Cache[$id];
    }

    /**
     * sets the cache for the id
     *
     * @param $id
     * @param $value
     */
    public function set($id,$value) {
        $this->level1Cache[$id]=$value;
        $this->level2Cache->set($id,$value);
    }


    /**
     * Initialize the TYPO3 second level cache
     */
    private function initializeLevel2Cache() {
        t3lib_cache::initializeCachingFramework();
        try {
            $this->level2Cache = $GLOBALS['typo3CacheManager']->getCache('cache_extbase_object');
        } catch (t3lib_cache_exception_NoSuchCache $exception) {
            $this->level2Cache = $GLOBALS['typo3CacheFactory']->create(
                'cache_extbase_object',
                $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_extbase_object']['frontend'],
                $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_extbase_object']['backend'],
                $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_extbase_object']['options']
            );
        }
    }
}