299 lines
9.3 KiB
PHP
299 lines
9.3 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) 2005-2010 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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* @version $Id$
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*/
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/** @see Zend_Cache_Exception */
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require_once 'Zend/Cache/Exception.php';
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/** @see Zend_Cache */
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require_once 'Zend/Cache.php';
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/**
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* @category Zend
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* @package Zend_Cache
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* @copyright Copyright (c) 2005-2010 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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class Zend_Cache_Manager
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{
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/**
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* Constant holding reserved name for default Page Cache
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*/
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const PAGECACHE = 'page';
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/**
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* Constant holding reserved name for default Page Tag Cache
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*/
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const PAGETAGCACHE = 'pagetag';
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/**
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* Array of caches stored by the Cache Manager instance
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*
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* @var array
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*/
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protected $_caches = array();
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/**
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* Array of ready made configuration templates for lazy
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* loading caches.
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*
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* @var array
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*/
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protected $_optionTemplates = array(
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// Simple Common Default
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'default' => array(
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'frontend' => array(
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'name' => 'Core',
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'options' => array(
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'automatic_serialization' => true,
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),
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),
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'backend' => array(
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'name' => 'File',
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'options' => array(
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// use system temp dir by default of file backend
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// 'cache_dir' => '../cache',
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),
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),
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),
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// Static Page HTML Cache
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'page' => array(
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'frontend' => array(
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'name' => 'Capture',
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'options' => array(
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'ignore_user_abort' => true,
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),
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),
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'backend' => array(
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'name' => 'Static',
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'options' => array(
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'public_dir' => '../public',
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),
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),
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),
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// Tag Cache
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'pagetag' => array(
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'frontend' => array(
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'name' => 'Core',
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'options' => array(
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'automatic_serialization' => true,
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'lifetime' => null
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),
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),
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'backend' => array(
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'name' => 'File',
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'options' => array(
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// use system temp dir by default of file backend
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// 'cache_dir' => '../cache',
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// use default umask of file backend
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// 'cache_file_umask' => 0644
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),
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),
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),
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);
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/**
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* Set a new cache for the Cache Manager to contain
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*
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* @param string $name
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* @param Zend_Cache_Core $cache
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* @return Zend_Cache_Manager
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*/
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public function setCache($name, Zend_Cache_Core $cache)
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{
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$this->_caches[$name] = $cache;
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return $this;
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}
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/**
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* Check if the Cache Manager contains the named cache object, or a named
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* configuration template to lazy load the cache object
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*
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* @param string $name
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* @return bool
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*/
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public function hasCache($name)
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{
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if (isset($this->_caches[$name])
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|| $this->hasCacheTemplate($name)
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) {
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return true;
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}
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return false;
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}
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/**
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* Fetch the named cache object, or instantiate and return a cache object
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* using a named configuration template
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*
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* @param string $name
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* @return Zend_Cache_Core
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*/
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public function getCache($name)
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{
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if (isset($this->_caches[$name])) {
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return $this->_caches[$name];
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}
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if (isset($this->_optionTemplates[$name])) {
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if ($name == self::PAGECACHE
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&& (!isset($this->_optionTemplates[$name]['backend']['options']['tag_cache'])
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|| !$this->_optionTemplates[$name]['backend']['options']['tag_cache'] instanceof Zend_Cache_Core)
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) {
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$this->_optionTemplates[$name]['backend']['options']['tag_cache']
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= $this->getCache(self::PAGETAGCACHE);
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}
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$this->_caches[$name] = Zend_Cache::factory(
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$this->_optionTemplates[$name]['frontend']['name'],
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$this->_optionTemplates[$name]['backend']['name'],
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isset($this->_optionTemplates[$name]['frontend']['options']) ? $this->_optionTemplates[$name]['frontend']['options'] : array(),
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isset($this->_optionTemplates[$name]['backend']['options']) ? $this->_optionTemplates[$name]['backend']['options'] : array(),
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isset($this->_optionTemplates[$name]['frontend']['customFrontendNaming']) ? $this->_optionTemplates[$name]['frontend']['customFrontendNaming'] : false,
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isset($this->_optionTemplates[$name]['backend']['customBackendNaming']) ? $this->_optionTemplates[$name]['backend']['customBackendNaming'] : false,
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isset($this->_optionTemplates[$name]['frontendBackendAutoload']) ? $this->_optionTemplates[$name]['frontendBackendAutoload'] : false
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);
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return $this->_caches[$name];
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}
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}
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/**
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* Fetch all available caches
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*
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* @return array An array of all available caches with it's names as key
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*/
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public function getCaches()
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{
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$caches = $this->_caches;
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foreach ($this->_optionTemplates as $name => $tmp) {
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if (!isset($caches[$name])) {
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$caches[$name] = $this->getCache($name);
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}
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}
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return $caches;
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}
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/**
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* Set a named configuration template from which a cache object can later
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* be lazy loaded
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*
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* @param string $name
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* @param array $options
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* @return Zend_Cache_Manager
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*/
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public function setCacheTemplate($name, $options)
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{
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if ($options instanceof Zend_Config) {
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$options = $options->toArray();
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} elseif (!is_array($options)) {
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require_once 'Zend/Cache/Exception.php';
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throw new Zend_Cache_Exception('Options passed must be in'
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. ' an associative array or instance of Zend_Config');
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}
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$this->_optionTemplates[$name] = $options;
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return $this;
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}
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/**
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* Check if the named configuration template
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*
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* @param string $name
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* @return bool
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*/
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public function hasCacheTemplate($name)
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{
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if (isset($this->_optionTemplates[$name])) {
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return true;
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}
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return false;
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}
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/**
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* Get the named configuration template
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*
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* @param string $name
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* @return array
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*/
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public function getCacheTemplate($name)
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{
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if (isset($this->_optionTemplates[$name])) {
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return $this->_optionTemplates[$name];
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}
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}
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/**
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* Pass an array containing changes to be applied to a named
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* configuration
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* template
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*
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* @param string $name
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* @param array $options
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* @return Zend_Cache_Manager
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* @throws Zend_Cache_Exception for invalid options format or if option templates do not have $name
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*/
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public function setTemplateOptions($name, $options)
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{
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if ($options instanceof Zend_Config) {
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$options = $options->toArray();
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} elseif (!is_array($options)) {
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require_once 'Zend/Cache/Exception.php';
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throw new Zend_Cache_Exception('Options passed must be in'
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. ' an associative array or instance of Zend_Config');
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}
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if (!isset($this->_optionTemplates[$name])) {
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throw new Zend_Cache_Exception('A cache configuration template'
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. 'does not exist with the name "' . $name . '"');
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}
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$this->_optionTemplates[$name]
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= $this->_mergeOptions($this->_optionTemplates[$name], $options);
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return $this;
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}
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/**
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* Simple method to merge two configuration arrays
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*
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* @param array $current
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* @param array $options
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* @return array
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*/
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protected function _mergeOptions(array $current, array $options)
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{
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if (isset($options['frontend']['name'])) {
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$current['frontend']['name'] = $options['frontend']['name'];
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}
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if (isset($options['backend']['name'])) {
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$current['backend']['name'] = $options['backend']['name'];
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}
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if (isset($options['frontend']['options'])) {
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foreach ($options['frontend']['options'] as $key=>$value) {
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$current['frontend']['options'][$key] = $value;
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}
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}
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if (isset($options['backend']['options'])) {
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foreach ($options['backend']['options'] as $key=>$value) {
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$current['backend']['options'][$key] = $value;
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}
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}
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return $current;
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}
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}
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