* @link http://www.pradosoft.com/ * @copyright Copyright © 2005-2014 PradoSoft * @license http://www.pradosoft.com/license/ * @package System.Data.SqlMap */ /** * TSqlMapApplicationCache uses the default Prado application cache for * caching SqlMap results. * * @author Wei Zhuo * @package System.Data.SqlMap * @since 3.1 */ class TSqlMapApplicationCache implements ICache { protected $_cacheModel=null; /** * Create a new cache with limited cache size. * @param TSqlMapCacheModel $cacheModel. */ public function __construct($cacheModel=null) { $this->_cacheModel=$cacheModel; } /** * * @return string a KeyListID for the cache model. */ protected function getKeyListId() { $id='keyList'; if ($this->_cacheModel instanceof TSqlMapCacheModel) $id.='_'.$this->_cacheModel->getId(); return $id; } /** * Retreive keylist from cache or create it if it doesn't exists * @return TList */ protected function getKeyList() { if (($keyList=$this->getCache()->get($this->getKeyListId()))===false) { $keyList=new TList(); $this->getCache()->set($this->getKeyListId(), $keyList); } return $keyList; } protected function setKeyList($keyList) { $this->getCache()->set($this->getKeyListId(), $keyList); } /** * @param string item to be deleted. */ public function delete($key) { $keyList=$this->getKeyList(); $keyList->remove($key); $this->getCache()->delete($key); $this->setKeyList($keyList); } /** * Deletes all items in the cache, only for data cached by sqlmap cachemodel */ public function flush() { $keyList=$this->getKeyList(); $cache=$this->getCache(); foreach ($keyList as $key) { $cache->delete($key); } // Remove the old keylist $cache->delete($this->getKeyListId()); } /** * @return mixed Gets a cached object with the specified key. */ public function get($key) { $result = $this->getCache()->get($key); if ($result === false) { // if the key has not been found in cache (e.g expired), remove from keylist $keyList=$this->getKeyList(); if ($keyList->contains($key)) { $keyList->remove($key); $this->setKeyList($keyList); } } return $result === false ? null : $result; } /** * Stores a value identified by a key into cache. * @param string the key identifying the value to be cached * @param mixed the value to be cached */ public function set($key, $value,$expire=0,$dependency=null) { $this->getCache()->set($key, $value, $expire,$dependency); $keyList=$this->getKeyList(); if (!$keyList->contains($key)) { $keyList->add($key); $this->setKeyList($keyList); } } /** * @return ICache Application cache instance. */ protected function getCache() { return Prado::getApplication()->getCache(); } /** * @throws TSqlMapException not implemented. */ public function add($id,$value,$expire=0,$dependency=null) { throw new TSqlMapException('sqlmap_use_set_to_store_cache'); } }