diff options
Diffstat (limited to 'framework/Data/TAPCCache.php')
| -rw-r--r-- | framework/Data/TAPCCache.php | 70 |
1 files changed, 22 insertions, 48 deletions
diff --git a/framework/Data/TAPCCache.php b/framework/Data/TAPCCache.php index cef684fb..5c0a6eba 100644 --- a/framework/Data/TAPCCache.php +++ b/framework/Data/TAPCCache.php @@ -18,7 +18,10 @@ * 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 APC PHP extension must be loaded.
+ * To use this module, the APC PHP extension must be loaded and set in the php.ini file the following:
+ * <code>
+ * apc.cache_by_default=0
+ * </code>
*
* Some usage examples of TAPCCache are as follows,
* <code>
@@ -32,7 +35,7 @@ * cache module. It can be accessed via {@link TApplication::getCache()}.
*
* TAPCCache may be configured in application configuration file as follows
- * <module id="cache" type="System.Data.TAPCCache" Prefix="apc_cache_prefix_key_"/>
+ * <module id="cache" class="System.Data.TAPCCache" />
*
* @author Alban Hanry <compte_messagerie@hotmail.com>
* @version $Revision: $ $Date: $
@@ -41,9 +44,6 @@ */
class TAPCCache extends TModule implements ICache
{
-
- const SERIALIZED = "_serialized";
-
/**
* @var boolean if the module is initialized
*/
@@ -62,38 +62,12 @@ class TAPCCache extends TModule implements ICache */
public function init($config)
{
- $application=$this->getApplication();
- if(!$application || $application->getMode()!==TApplication::STATE_PERFORMANCE)
- {
- if(!extension_loaded('apc'))
- throw new TConfigurationException('apccache_extension_required');
- }
- if($application) {
- if(!$this->_prefix)
- $this->_prefix=$application->getUniqueID();
- $application->setCache($this);
- }
- $this->_initialized=true;
- }
-
- /**
- * @return string prefix used to cache key
- */
- public function getPrefix()
- {
- return $this->_prefix;
- }
-
- /**
- * @param string prefix to be used for cache key
- * @throws TInvalidOperationException if the module is already initialized
- */
- public function setPrefix($value)
- {
- if($this->_initialized)
- throw new TInvalidOperationException('apccache_prefix_unchangeable');
- else
- $this->_prefix=$value;
+ if(!extension_loaded('apc'))
+ throw new TConfigurationException('apccache_extension_required');
+ $application=$this->getApplication();
+ $this->_prefix=$application->getUniqueID();
+ $application->setCache($this);
+ $this->_initialized=true;
}
/**
@@ -102,7 +76,10 @@ class TAPCCache extends TModule implements ICache */
public function get($key)
{
- return apc_fetch($this->_prefix.$key);
+ if(($value=apc_fetch($this->_prefix.$key))!==false)
+ return Prado::unserialize($value);
+ else
+ return $value;
}
/**
@@ -118,41 +95,38 @@ class TAPCCache extends TModule implements ICache */
public function set($key,$value,$expiry=0)
{
- if(is_array($value))
- $value=new ArrayObject($value);
- return apc_store($this->_prefix.$key,$value,$expiry);
+ return apc_store($this->_prefix.$key,Prado::serialize($value),$expiry);
}
/**
* Stores a value identified by a key into cache if the cache does not contain this key.
- * Nothing will be done if the cache already contains the key.
+ * APC does not support this mode. So calling this method will raise an exception.
* @param string the key identifying the value to be cached
* @param mixed the value to be cached
* @param integer the expiration time of the value,
* 0 means never expire,
* @return boolean true if the value is successfully stored into cache, false otherwise
+ * @throw new TNotSupportedException if this method is invoked
*/
public function add($key,$value,$expiry=0)
{
- if(!apc_fetch($this->_prefix.$key))
- return $this->set($key,$value,$expiry);
- else return false;
+ throw new TNotSupportedException('apccache_add_unsupported');
}
/**
* Stores a value identified by a key into cache only if the cache contains this key.
* The existing value and expiration time will be overwritten with the new ones.
+ * APC does not support this mode. So calling this method will raise an exception.
* @param string the key identifying the value to be cached
* @param mixed the value to be cached
* @param integer the expiration time of the value,
* 0 means never expire,
* @return boolean true if the value is successfully stored into cache, false otherwise
+ * @throw new TNotSupportedException if this method is invoked
*/
public function replace($key,$value,$expiry=0)
{
- if(apc_fetch($this->_prefix.$key))
- return $this->set($key,$value,$expiry);
- else return false;
+ throw new TNotSupportedException('apccache_replace_unsupported');
}
/**
|