mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
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23dfd90b29
git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@5313 3807eeeb-6ff5-0310-8944-8be069107fe0
162 lines
No EOL
4 KiB
PHP
162 lines
No EOL
4 KiB
PHP
<?php
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/* SVN FILE: $Id$ */
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/**
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* Database Storage engine for cache
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*
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*
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* PHP versions 4 and 5
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*
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* CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
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* Copyright 2005-2007, Cake Software Foundation, Inc.
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* 1785 E. Sahara Avenue, Suite 490-204
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* Las Vegas, Nevada 89104
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @filesource
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* @copyright Copyright 2005-2007, Cake Software Foundation, Inc.
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs.cache
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* @since CakePHP(tm) v 1.2.0.4933
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* @version $Revision$
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* @modifiedby $LastChangedBy$
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* @lastmodified $Date$
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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/**
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* Database Storage engine for cache
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*
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* @todo Not Implemented
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* @package cake
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* @subpackage cake.cake.libs.cache
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*/
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class ModelEngine extends CacheEngine {
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/**
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* Model instance.
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*
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* @var object
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* @access private
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*/
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var $_Model = null;
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/**
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* Fields that holds data.
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*
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* @var string
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* @access private
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*/
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var $_dataField = '';
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/**
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* Field that holds expiration information.
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*
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* @var string
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* @access private
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*/
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var $_expiryField = '';
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/**
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* Set up the cache engine
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*
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* Called automatically by the cache frontend
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*
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* @todo does not work will return false
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* @param array $params Associative array of parameters for the engine
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* @return boolean True if the engine has been succesfully initialized, false if not
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*/
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function init($params) {
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return false;
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$modelName = 'DbCache';
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$dataField = 'value';
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$expiryField = 'expires';
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extract($params);
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if (!class_exists($modelName) && !loadModel($modelName)) {
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return false;
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}
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$this->_Model = new $modelName;
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}
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/**
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* Garbage collection
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*
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* Permanently remove all expired and deleted data
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*
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* @access public
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*/
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function gc() {
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return $this->_Model->deleteAll(array($this->_expiryField => '<= '.time()));
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}
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/**
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* Write a value in the cache
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*
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* @param string $key Identifier for the data
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* @param mixed $value Data to be cached
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* @param mixed $duration How long to cache the data, in seconds
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* @return boolean True if the data was succesfully cached, false on failure
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* @access public
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*/
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function write($key, &$value, $duration = CACHE_DEFAULT_DURATION) {
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$serialized = serialize($value);
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if (!$serialized) {
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return false;
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}
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$data = array($this->_Model->name => array(
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$this->_dataField => $serialized,
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$this->_expiryField => time() + $duration));
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$oldId = $this->_Model->id;
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$this->_Model->id = $key;
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$res = $this->_Model->save($data);
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$this->_Model->id = $oldId;
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return $res;
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}
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/**
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* Read a value from the cache
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*
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* @param string $key Identifier for the data
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* @return mixed The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it
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* @access public
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*/
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function read($key) {
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$val = $this->_Model->field($this->_expiryField, array($this->_Model->primaryKey => $key, $this->_expiryField => '> '.time()));
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return ife($val, unserialize($val), false);
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}
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/**
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* Delete a value from the cache
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*
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* @param string $key Identifier for the data
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* @return boolean True if the value was succesfully deleted, false if it didn't exist or couldn't be removed
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* @access public
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*/
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function delete($key) {
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return $this->_Model->del($key);
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}
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/**
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* Delete all values from the cache
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*
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* @return boolean True if the cache was succesfully cleared, false otherwise
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* @access public
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*/
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function clear() {
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return $this->_Model->deleteAll(null);
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}
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/**
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* Return the settings for this cache engine
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*
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* @return array list of settings for this engine
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* @access public
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*/
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function settings() {
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$class = null;
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if (is_a($this->_Model, 'Model')) {
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$class = get_class($this->_Model);
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}
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return array('class' => get_class($this),
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'modelName' => $class,
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'dataField' => $this->_dataField,
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'expiryField' => $this->_expiryField);
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}
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}
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?>
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