/*
* JBoss, Home of Professional Open Source
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package org.jboss.seam.servlet;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import org.jboss.seam.Seam;
import org.jboss.seam.contexts.ServletLifecycle;
import org.jboss.seam.init.Initialization;
import org.jboss.seam.jmx.JBossClusterMonitor;
import org.jboss.seam.log.LogProvider;
import org.jboss.seam.log.Logging;
/**
* Drives certain Seam functionality such as initialization and cleanup
* of application and session contexts from the web application lifecycle.
*
* @author Gavin King
*/
public class SeamListener implements ServletContextListener, HttpSessionListener
{
private static final LogProvider log = Logging.getLogProvider(ServletContextListener.class);
public void contextInitialized(ServletContextEvent event)
{
log.info( "Welcome to Seam " + Seam.getVersion() );
ServletLifecycle.beginApplication( event.getServletContext() );
new Initialization( event.getServletContext() ).create().init();
}
public void contextDestroyed(ServletContextEvent event)
{
ServletLifecycle.endApplication();
}
public void sessionCreated(HttpSessionEvent event)
{
ServletLifecycle.beginSession( event.getSession() );
}
public void sessionDestroyed(HttpSessionEvent event)
{
JBossClusterMonitor monitor = JBossClusterMonitor.getInstance(event.getSession().getServletContext());
if (monitor != null && monitor.failover())
{
// If application is unfarmed or all nodes shutdown simultaneously, cluster cache may still fail to retrieve SFSBs to destroy
log.info("Detected fail-over, not destroying session context");
}
else
{
ServletLifecycle.endSession( event.getSession() );
}
}
}