259 Zeilen
7,3 KiB
PHP
259 Zeilen
7,3 KiB
PHP
<?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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* @subpackage Zend_Cache_Frontend
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* @copyright Copyright (c) 2005-2011 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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/**
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* @see Zend_Cache_Core
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*/
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require_once 'Zend/Cache/Core.php';
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/**
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* @package Zend_Cache
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* @subpackage Zend_Cache_Frontend
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* @copyright Copyright (c) 2005-2011 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_Frontend_Class extends Zend_Cache_Core
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{
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/**
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* Available options
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*
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* ====> (mixed) cached_entity :
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* - if set to a class name, we will cache an abstract class and will use only static calls
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* - if set to an object, we will cache this object methods
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*
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* ====> (boolean) cache_by_default :
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* - if true, method calls will be cached by default
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*
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* ====> (array) cached_methods :
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* - an array of method names which will be cached (even if cache_by_default = false)
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*
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* ====> (array) non_cached_methods :
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* - an array of method names which won't be cached (even if cache_by_default = true)
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*
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* @var array available options
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*/
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protected $_specificOptions = array(
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'cached_entity' => null,
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'cache_by_default' => true,
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'cached_methods' => array(),
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'non_cached_methods' => array()
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);
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/**
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* Tags array
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*
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* @var array
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*/
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private $_tags = array();
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/**
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* SpecificLifetime value
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*
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* false => no specific life time
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*
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* @var int
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*/
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private $_specificLifetime = false;
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/**
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* The cached object or the name of the cached abstract class
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*
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* @var mixed
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*/
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private $_cachedEntity = null;
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/**
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* The class name of the cached object or cached abstract class
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*
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* Used to differentiate between different classes with the same method calls.
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*
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* @var string
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*/
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private $_cachedEntityLabel = '';
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/**
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* Priority (used by some particular backends)
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*
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* @var int
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*/
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private $_priority = 8;
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/**
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* Constructor
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*
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* @param array $options Associative array of options
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* @throws Zend_Cache_Exception
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* @return void
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*/
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public function __construct(array $options = array())
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{
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while (list($name, $value) = each($options)) {
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$this->setOption($name, $value);
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}
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if ($this->_specificOptions['cached_entity'] === null) {
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Zend_Cache::throwException('cached_entity must be set !');
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}
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$this->setCachedEntity($this->_specificOptions['cached_entity']);
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$this->setOption('automatic_serialization', true);
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}
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/**
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* Set a specific life time
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*
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* @param int $specificLifetime
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* @return void
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*/
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public function setSpecificLifetime($specificLifetime = false)
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{
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$this->_specificLifetime = $specificLifetime;
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}
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/**
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* Set the priority (used by some particular backends)
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*
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* @param int $priority integer between 0 (very low priority) and 10 (maximum priority)
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*/
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public function setPriority($priority)
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{
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$this->_priority = $priority;
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}
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/**
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* Public frontend to set an option
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*
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* Just a wrapper to get a specific behaviour for cached_entity
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*
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* @param string $name Name of the option
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* @param mixed $value Value of the option
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* @throws Zend_Cache_Exception
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* @return void
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*/
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public function setOption($name, $value)
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{
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if ($name == 'cached_entity') {
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$this->setCachedEntity($value);
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} else {
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parent::setOption($name, $value);
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}
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}
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/**
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* Specific method to set the cachedEntity
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*
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* if set to a class name, we will cache an abstract class and will use only static calls
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* if set to an object, we will cache this object methods
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*
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* @param mixed $cachedEntity
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*/
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public function setCachedEntity($cachedEntity)
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{
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if (!is_string($cachedEntity) && !is_object($cachedEntity)) {
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Zend_Cache::throwException('cached_entity must be an object or a class name');
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}
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$this->_cachedEntity = $cachedEntity;
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$this->_specificOptions['cached_entity'] = $cachedEntity;
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if (is_string($this->_cachedEntity)){
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$this->_cachedEntityLabel = $this->_cachedEntity;
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} else {
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$ro = new ReflectionObject($this->_cachedEntity);
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$this->_cachedEntityLabel = $ro->getName();
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}
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}
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/**
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* Set the cache array
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*
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* @param array $tags
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* @return void
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*/
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public function setTagsArray($tags = array())
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{
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$this->_tags = $tags;
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}
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/**
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* Main method : call the specified method or get the result from cache
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*
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* @param string $name Method name
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* @param array $parameters Method parameters
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* @return mixed Result
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*/
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public function __call($name, $parameters)
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{
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$cacheBool1 = $this->_specificOptions['cache_by_default'];
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$cacheBool2 = in_array($name, $this->_specificOptions['cached_methods']);
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$cacheBool3 = in_array($name, $this->_specificOptions['non_cached_methods']);
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$cache = (($cacheBool1 || $cacheBool2) && (!$cacheBool3));
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if (!$cache) {
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// We do not have not cache
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return call_user_func_array(array($this->_cachedEntity, $name), $parameters);
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}
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$id = $this->_makeId($name, $parameters);
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if ( ($rs = $this->load($id)) && isset($rs[0], $rs[1]) ) {
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// A cache is available
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$output = $rs[0];
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$return = $rs[1];
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} else {
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// A cache is not available (or not valid for this frontend)
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ob_start();
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ob_implicit_flush(false);
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try {
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$return = call_user_func_array(array($this->_cachedEntity, $name), $parameters);
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$output = ob_get_clean();
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$data = array($output, $return);
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$this->save($data, $id, $this->_tags, $this->_specificLifetime, $this->_priority);
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} catch (Exception $e) {
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ob_end_clean();
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throw $e;
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}
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}
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echo $output;
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return $return;
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}
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/**
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* ZF-9970
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*
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* @deprecated
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*/
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private function _makeId($name, $args)
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{
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return $this->makeId($name, $args);
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}
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/**
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* Make a cache id from the method name and parameters
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*
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* @param string $name Method name
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* @param array $args Method parameters
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* @return string Cache id
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*/
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public function makeId($name, array $args = array())
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{
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return md5($this->_cachedEntityLabel . '__' . $name . '__' . serialize($args));
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}
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}
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