diff options
Diffstat (limited to 'framework/Caching/TXCache.php')
-rw-r--r-- | framework/Caching/TXCache.php | 262 |
1 files changed, 131 insertions, 131 deletions
diff --git a/framework/Caching/TXCache.php b/framework/Caching/TXCache.php index 6750d5b8..31f2a4d2 100644 --- a/framework/Caching/TXCache.php +++ b/framework/Caching/TXCache.php @@ -1,131 +1,131 @@ -<?php
-/**
- * TXCache class file
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @link http://www.pradosoft.com/
- * @copyright Copyright © 2005-2012 PradoSoft
- * @license http://www.pradosoft.com/license/
- * @version $Id: TXCache.php 1994 2007-06-11 16:02:28Z knut $
- * @package System.Caching
- */
-
-/**
- * TXCache class
- *
- * TXCache implements a cache application module based on {@link http://xcache.lighttpd.net/ xcache}.
- *
- * By definition, cache does not ensure the existence of a value
- * even if it never expires. Cache is not meant to be an persistent storage.
- *
- * To use this module, the xcache PHP extension must be loaded and configured in the php.ini.
- *
- * Some usage examples of TXCache are as follows,
- * <code>
- * $cache=new TXCache; // TXCache may also be loaded as a Prado application module
- * $cache->init(null);
- * $cache->add('object',$object);
- * $object2=$cache->get('object');
- * </code>
- *
- * If loaded, TXCache will register itself with {@link TApplication} as the
- * cache module. It can be accessed via {@link TApplication::getCache()}.
- *
- * TXCache may be configured in application configuration file as follows
- * <code>
- * <module id="cache" class="System.Caching.TXCache" />
- * </code>
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @version $Id: TXCache.php 1994 2007-06-11 16:02:28Z knut $
- * @package System.Caching
- * @since 3.1.1
- */
-class TXCache extends TCache
-{
- /**
- * Initializes this module.
- * This method is required by the IModule interface.
- * @param TXmlElement configuration for this module, can be null
- * @throws TConfigurationException if xcache extension is not installed or not started, check your php.ini
- */
- public function init($config)
- {
- if(!function_exists('xcache_isset'))
- throw new TConfigurationException('xcache_extension_required');
-
- $enabled = (int)ini_get('xcache.cacher') !== 0;
- $var_size = (int)ini_get('xcache.var_size');
-
- if(!($enabled && $var_size > 0))
- throw new TConfigurationException('xcache_extension_not_enabled');
-
- parent::init($config);
- }
-
- /**
- * Retrieves a value from cache with a specified key.
- * This is the implementation of the method declared in the parent class.
- * @param string a unique key identifying the cached value
- * @return string the value stored in cache, false if the value is not in the cache or expired.
- */
- protected function getValue($key)
- {
- return xcache_isset($key) ? xcache_get($key) : false;
- }
-
- /**
- * Stores a value identified by a key in cache.
- * This is the implementation of the method declared in the parent class.
- *
- * @param string the key identifying the value to be cached
- * @param string the value to be cached
- * @param integer the number of seconds in which the cached value will expire. 0 means never expire.
- * @return boolean true if the value is successfully stored into cache, false otherwise
- */
- protected function setValue($key,$value,$expire)
- {
- return xcache_set($key,$value,$expire);
- }
-
- /**
- * Stores a value identified by a key into cache if the cache does not contain this key.
- * This is the implementation of the method declared in the parent class.
- *
- * @param string the key identifying the value to be cached
- * @param string the value to be cached
- * @param integer the number of seconds in which the cached value will expire. 0 means never expire.
- * @return boolean true if the value is successfully stored into cache, false otherwise
- */
- protected function addValue($key,$value,$expire)
- {
- return !xcache_isset($key) ? $this->setValue($key,$value,$expire) : false;
- }
-
- /**
- * Deletes a value with the specified key from cache
- * This is the implementation of the method declared in the parent class.
- * @param string the key of the value to be deleted
- * @return boolean if no error happens during deletion
- */
- protected function deleteValue($key)
- {
- return xcache_unset($key);
- }
-
- /**
- * Deletes all values from cache.
- * Be careful of performing this operation if the cache is shared by multiple applications.
- */
- public function flush()
- {
- for($i=0, $max=xcache_count(XC_TYPE_VAR); $i<$max; $i++)
- {
- if(xcache_clear_cache(XC_TYPE_VAR, $i)===false)
- return false;
- }
- return true;
- }
-}
-
-?>
+<?php +/** + * TXCache class file + * + * @author Wei Zhuo <weizhuo[at]gmail[dot]com> + * @link http://www.pradosoft.com/ + * @copyright Copyright © 2005-2012 PradoSoft + * @license http://www.pradosoft.com/license/ + * @version $Id: TXCache.php 1994 2007-06-11 16:02:28Z knut $ + * @package System.Caching + */ + +/** + * TXCache class + * + * TXCache implements a cache application module based on {@link http://xcache.lighttpd.net/ xcache}. + * + * By definition, cache does not ensure the existence of a value + * even if it never expires. Cache is not meant to be an persistent storage. + * + * To use this module, the xcache PHP extension must be loaded and configured in the php.ini. + * + * Some usage examples of TXCache are as follows, + * <code> + * $cache=new TXCache; // TXCache may also be loaded as a Prado application module + * $cache->init(null); + * $cache->add('object',$object); + * $object2=$cache->get('object'); + * </code> + * + * If loaded, TXCache will register itself with {@link TApplication} as the + * cache module. It can be accessed via {@link TApplication::getCache()}. + * + * TXCache may be configured in application configuration file as follows + * <code> + * <module id="cache" class="System.Caching.TXCache" /> + * </code> + * + * @author Wei Zhuo <weizhuo[at]gmail[dot]com> + * @version $Id: TXCache.php 1994 2007-06-11 16:02:28Z knut $ + * @package System.Caching + * @since 3.1.1 + */ +class TXCache extends TCache +{ + /** + * Initializes this module. + * This method is required by the IModule interface. + * @param TXmlElement configuration for this module, can be null + * @throws TConfigurationException if xcache extension is not installed or not started, check your php.ini + */ + public function init($config) + { + if(!function_exists('xcache_isset')) + throw new TConfigurationException('xcache_extension_required'); + + $enabled = (int)ini_get('xcache.cacher') !== 0; + $var_size = (int)ini_get('xcache.var_size'); + + if(!($enabled && $var_size > 0)) + throw new TConfigurationException('xcache_extension_not_enabled'); + + parent::init($config); + } + + /** + * Retrieves a value from cache with a specified key. + * This is the implementation of the method declared in the parent class. + * @param string a unique key identifying the cached value + * @return string the value stored in cache, false if the value is not in the cache or expired. + */ + protected function getValue($key) + { + return xcache_isset($key) ? xcache_get($key) : false; + } + + /** + * Stores a value identified by a key in cache. + * This is the implementation of the method declared in the parent class. + * + * @param string the key identifying the value to be cached + * @param string the value to be cached + * @param integer the number of seconds in which the cached value will expire. 0 means never expire. + * @return boolean true if the value is successfully stored into cache, false otherwise + */ + protected function setValue($key,$value,$expire) + { + return xcache_set($key,$value,$expire); + } + + /** + * Stores a value identified by a key into cache if the cache does not contain this key. + * This is the implementation of the method declared in the parent class. + * + * @param string the key identifying the value to be cached + * @param string the value to be cached + * @param integer the number of seconds in which the cached value will expire. 0 means never expire. + * @return boolean true if the value is successfully stored into cache, false otherwise + */ + protected function addValue($key,$value,$expire) + { + return !xcache_isset($key) ? $this->setValue($key,$value,$expire) : false; + } + + /** + * Deletes a value with the specified key from cache + * This is the implementation of the method declared in the parent class. + * @param string the key of the value to be deleted + * @return boolean if no error happens during deletion + */ + protected function deleteValue($key) + { + return xcache_unset($key); + } + + /** + * Deletes all values from cache. + * Be careful of performing this operation if the cache is shared by multiple applications. + */ + public function flush() + { + for($i=0, $max=xcache_count(XC_TYPE_VAR); $i<$max; $i++) + { + if(xcache_clear_cache(XC_TYPE_VAR, $i)===false) + return false; + } + return true; + } +} + +?> |