oracle.clex.util
Class ServletEventListener

java.lang.Object
  |
  +--oracle.clex.util.ServletEventListener

All Implemented Interfaces:

javax.servlet.http.HttpSessionListener, javax.servlet.ServletContextListener

public class ServletEventListener

extends java.lang.Object

implements javax.servlet.http.HttpSessionListener, javax.servlet.ServletContextListener

ServletEventListener class implements the J2EE Session Lifecyle Listener interface. It is responsible to take action in case of creation and destruction of a session. The action taken can be delegated. At this point the class closes connections for a particular session in case a session is destroyed. If the container shuts down it will close all open connections belonging to the web-app. to register this class as an event listener for a web app you will have to insert the following statements into the web.xml file:

 <listener>
	 <listener-class>oracle.clex.util.ServletEventListener</listener-class>
 </listener>
 

Constructor Summary

ServletEventListener()

Method Summary

void	contextDestroyed(javax.servlet.ServletContextEvent p0) Dummy Implementation.
void	contextInitialized(javax.servlet.ServletContextEvent p0) Dummy Implementation
void	sessionCreated(javax.servlet.http.HttpSessionEvent anHttpSessionEvent)
void	sessionDestroyed(javax.servlet.http.HttpSessionEvent anHttpSessionEvent) This method is called from the container upon destruction of a session.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ServletEventListener

public ServletEventListener()

Method Detail

sessionDestroyed

public void sessionDestroyed(javax.servlet.http.HttpSessionEvent anHttpSessionEvent)

This method is called from the container upon destruction of a session. Prerequisites are that this class is registered as a listener class in the appropriate J2EE deployment file which is web.xml. At this point it only closes connections associated with the session to be destroyed.

Specified by:

sessionDestroyed in interface javax.servlet.http.HttpSessionListener

sessionCreated

public void sessionCreated(javax.servlet.http.HttpSessionEvent anHttpSessionEvent)

Specified by:

sessionCreated in interface javax.servlet.http.HttpSessionListener

contextInitialized

public void contextInitialized(javax.servlet.ServletContextEvent p0)

Dummy Implementation

Specified by:

contextInitialized in interface javax.servlet.ServletContextListener

contextDestroyed

public void contextDestroyed(javax.servlet.ServletContextEvent p0)

Dummy Implementation. Could be the place where we release all the connections in case the app server goes down

Specified by:

contextDestroyed in interface javax.servlet.ServletContextListener