105 lines
3.6 KiB
PHP
105 lines
3.6 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Cache
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* @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/**
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* @package Zend_Cache
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* @copyright Copyright (c) 2005-2007 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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abstract class Zend_Cache
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{
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/**
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* Available frontends
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*
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* @var array $availableFrontends array of frontend name (string)
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*/
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static public $availableFrontends = array('Core', 'Output', 'Class', 'File', 'Function', 'Page');
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/**
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* Available backends
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*
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* @var array $availableBackends array of backends name (string)
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*/
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static public $availableBackends = array('File', 'Sqlite', 'Memcached', 'Apc');
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/**
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* Consts for clean() method
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*/
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const CLEANING_MODE_ALL = 'all';
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const CLEANING_MODE_OLD = 'old';
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const CLEANING_MODE_MATCHING_TAG = 'matchingTag';
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const CLEANING_MODE_NOT_MATCHING_TAG = 'notMatchingTag';
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/**
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* Factory
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*
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* @param string $frontend frontend name
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* @param string $backend backend name
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* @param array $frontendOptions associative array of options for the corresponding frontend constructor
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* @param array $backendOptions associative array of options for the corresponding backend constructor
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*/
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static public function factory($frontend, $backend, $frontendOptions = array(), $backendOptions = array())
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{
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// because lowercase will fail
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$frontend = @ucfirst(strtolower($frontend));
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$backend = @ucfirst(strtolower($backend));
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if (!in_array($frontend, Zend_Cache::$availableFrontends)) {
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Zend_Cache::throwException("Incorrect frontend ($frontend)");
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}
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if (!in_array($backend, Zend_Cache::$availableBackends)) {
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Zend_Cache::throwException("Incorrect backend ($backend)");
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}
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// For perfs reasons, with frontend == 'Core', we can interact with the Core itself
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$frontendClass = 'Zend_Cache_' . ($frontend != 'Core' ? 'Frontend_' : '') . $frontend;
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$backendClass = 'Zend_Cache_Backend_' . $backend;
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// For perfs reasons, we do not use the Zend_Loader::loadClass() method
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// (security controls are explicit)
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require_once str_replace('_', DIRECTORY_SEPARATOR, $frontendClass) . '.php';
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require_once str_replace('_', DIRECTORY_SEPARATOR, $backendClass) . '.php';
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$frontendObject = new $frontendClass($frontendOptions);
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$backendObject = new $backendClass($backendOptions);
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$frontendObject->setBackend($backendObject);
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return $frontendObject;
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}
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/**
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* Throw an exception
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*
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* Note : for perf reasons, the "load" of Zend/Cache/Exception is dynamic
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*/
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static public function throwException($msg)
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{
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// For perfs reasons, we use this dynamic inclusion
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require_once 'Zend/Cache/Exception.php';
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throw new Zend_Cache_Exception($msg);
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}
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}
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