1 files changed, 107 insertions, 0 deletions
diff --git a/framework/caching/CEAcceleratorCache.php b/framework/caching/CEAcceleratorCache.php
new file mode 100644
index 0000000..d02545d
--- /dev/null
+++ b/framework/caching/CEAcceleratorCache.php
@@ -0,0 +1,107 @@
+<?php
+/**
+ * CEAcceleratorCache class file
+ *
+ * @author Steffen Dietz <steffo.dietz[at]googlemail[dot]com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2011 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CEAcceleratorCache implements a cache application module based on {@link http://eaccelerator.net/ eaccelerator}.
+ *
+ * To use this application component, the eAccelerator PHP extension must be loaded.
+ *
+ * See {@link CCache} manual for common cache operations that are supported by CEAccelerator.
+ *
+ * Please note that as of v0.9.6, eAccelerator no longer supports data caching.
+ * This means if you still want to use this component, your eAccelerator should be of 0.9.5.x or lower version.
+ *
+ * @author Steffen Dietz <steffo.dietz[at]googlemail[dot]com>
+ * @version $Id: CEAcceleratorCache.php 3515 2011-12-28 12:29:24Z mdomba $
+ * @package system.caching
+ */
+class CEAcceleratorCache extends CCache
+{
+	/**
+	 * Initializes this application component.
+	 * This method is required by the {@link IApplicationComponent} interface.
+	 * It checks the availability of eAccelerator.
+	 * @throws CException if eAccelerator extension is not loaded, is disabled or the cache functions are not compiled in.
+	 */
+	public function init()
+	{
+		parent::init();
+		if(!function_exists('eaccelerator_get'))
+			throw new CException(Yii::t('yii','CEAcceleratorCache requires PHP eAccelerator extension to be loaded, enabled or compiled with the "--with-eaccelerator-shared-memory" option.'));
+	}
+
+	/**
+	 * Retrieves a value from cache with a specified key.
+	 * This is the implementation of the method declared in the parent class.
+	 * @param string $key a unique key identifying the cached value
+	 * @return string the value stored in cache, false if the value is not in the cache or expired.
+	 */
+	protected function getValue($key)
+	{
+		$result = eaccelerator_get($key);
+		return $result !== NULL ? $result : false;
+	}
+
+	/**
+	 * Stores a value identified by a key in cache.
+	 * This is the implementation of the method declared in the parent class.
+	 *
+	 * @param string $key the key identifying the value to be cached
+	 * @param string $value the value to be cached
+	 * @param integer $expire the number of seconds in which the cached value will expire. 0 means never expire.
+	 * @return boolean true if the value is successfully stored into cache, false otherwise
+	 */
+	protected function setValue($key,$value,$expire)
+	{
+		return eaccelerator_put($key,$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 $key the key identifying the value to be cached
+	 * @param string $value the value to be cached
+	 * @param integer $expire the number of seconds in which the cached value will expire. 0 means never expire.
+	 * @return boolean true if the value is successfully stored into cache, false otherwise
+	 */
+	protected function addValue($key,$value,$expire)
+	{
+		return (NULL === eaccelerator_get($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 $key the key of the value to be deleted
+	 * @return boolean if no error happens during deletion
+	 */
+	protected function deleteValue($key)
+	{
+		return eaccelerator_rm($key);
+	}
+
+	/**
+	 * Deletes all values from cache.
+	 * This is the implementation of the method declared in the parent class.
+	 * @return boolean whether the flush operation was successful.
+	 * @since 1.1.5
+	 */
+	protected function flushValues()
+	{
+		// first, remove expired content from cache
+		eaccelerator_gc();
+		// now, remove leftover cache-keys
+		$keys = eaccelerator_list_keys();
+		foreach($keys as $key)
+			$this->deleteValue(substr($key['name'], 1));
+		return true;
+	}
+}