virtual void init()=0;
/**
+ * Returns a SessionCache instance.
+ *
+ * @param required true iff an exception should be thrown if no SessionCache is available
+ * @return a SessionCache
+ */
+ virtual SessionCache* getSessionCache(bool required=true) const=0;
+
+ /**
* Returns a ListenerService instance.
*
* @param required true iff an exception should be thrown if no ListenerService is available
- * @return a ListenerService if available, or NULL
+ * @return a ListenerService
*/
virtual ListenerService* getListenerService(bool required=true) const=0;
/**
* Returns a RequestMapper instance.
*
- * @param a RequestMapper if available, or NULL
+ * @param required true iff an exception should be thrown if no RequestMapper is available
+ * @param a RequestMapper
*/
- virtual RequestMapper* getRequestMapper() const=0;
+ virtual RequestMapper* getRequestMapper(bool required=true) const=0;
//virtual ISessionCache* getSessionCache() const=0;