//
// ========================================================================
// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.annotations;
import java.util.EventListener;
import javax.servlet.ServletContextAttributeListener;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletRequestAttributeListener;
import javax.servlet.ServletRequestListener;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionIdListener;
import javax.servlet.http.HttpSessionListener;
import org.eclipse.jetty.servlet.BaseHolder.Source;
import org.eclipse.jetty.servlet.ListenerHolder;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.resource.Resource;
import org.eclipse.jetty.webapp.DiscoveredAnnotation;
import org.eclipse.jetty.webapp.MetaData;
import org.eclipse.jetty.webapp.Origin;
import org.eclipse.jetty.webapp.WebAppContext;
/**
* WebListenerAnnotation
*
*
*/
public class WebListenerAnnotation extends DiscoveredAnnotation
{
private static final Logger LOG = Log.getLogger(WebListenerAnnotation.class);
/**
* @param context
* @param className
*/
public WebListenerAnnotation(WebAppContext context, String className)
{
super(context, className);
}
public WebListenerAnnotation(WebAppContext context, String className, Resource resource)
{
super(context, className, resource);
}
/**
* @see DiscoveredAnnotation#apply()
*/
public void apply()
{
Class<? extends java.util.EventListener> clazz = (Class<? extends EventListener>)getTargetClass();
if (clazz == null)
{
LOG.warn(_className+" cannot be loaded");
return;
}
try
{
if (ServletContextListener.class.isAssignableFrom(clazz) ||
ServletContextAttributeListener.class.isAssignableFrom(clazz) ||
ServletRequestListener.class.isAssignableFrom(clazz) ||
ServletRequestAttributeListener.class.isAssignableFrom(clazz) ||
HttpSessionListener.class.isAssignableFrom(clazz) ||
HttpSessionAttributeListener.class.isAssignableFrom(clazz) ||
HttpSessionIdListener.class.isAssignableFrom(clazz))
{
java.util.EventListener listener = (java.util.EventListener)_context.getServletContext().createInstance(clazz);
MetaData metaData = _context.getMetaData();
if (metaData.getOrigin(clazz.getName()+".listener") == Origin.NotSet)
{
ListenerHolder h = _context.getServletHandler().newListenerHolder(Source.ANNOTATION);
h.setListener(listener);
_context.getServletHandler().addListener(h);
_context.addEventListener(listener);
}
}
else
LOG.warn(clazz.getName()+" does not implement one of the servlet listener interfaces");
}
catch (Exception e)
{
LOG.warn(e);
}
}
}