/*
* Copyright 2013 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.overlord.dtgov.ui.server.fuse61;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletRequestEvent;
import javax.servlet.http.HttpSessionEvent;
import org.jboss.weld.servlet.api.ServletListener;
import org.overlord.commons.osgi.weld.BundleListener;
/**
* A servlet listener that wraps the Weld servlet listener so that we can
* fix up the context class loader during creation.
*
* @author eric.wittmann@redhat.com
*/
public class Listener implements ServletListener {
private ContextClassLoaderSwapper swapper;
private final org.jboss.weld.environment.servlet.Listener delegate;
/**
* Constructor.
*/
public Listener() {
swapper = new ContextClassLoaderSwapper();
delegate = new BundleListener();
swapper.restore();
}
private static final class ContextClassLoaderSwapper {
private ClassLoader loader = null;
/**
* Constructor.
*/
public ContextClassLoaderSwapper() {
loader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
}
/**
* Restores the classloader to its previous version.
*/
public void restore() {
Thread.currentThread().setContextClassLoader(loader);
}
}
/**
* @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent)
*/
@Override
public void contextDestroyed(ServletContextEvent arg0) {
delegate.contextDestroyed(arg0);
}
/**
* @see javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)
*/
@Override
public void contextInitialized(ServletContextEvent arg0) {
swapper = new ContextClassLoaderSwapper();
delegate.contextInitialized(arg0);
swapper.restore();
}
/**
* @see javax.servlet.ServletRequestListener#requestDestroyed(javax.servlet.ServletRequestEvent)
*/
@Override
public void requestDestroyed(ServletRequestEvent arg0) {
delegate.requestDestroyed(arg0);
}
/**
* @see javax.servlet.ServletRequestListener#requestInitialized(javax.servlet.ServletRequestEvent)
*/
@Override
public void requestInitialized(ServletRequestEvent arg0) {
delegate.requestInitialized(arg0);
}
/**
* @see javax.servlet.http.HttpSessionListener#sessionCreated(javax.servlet.http.HttpSessionEvent)
*/
@Override
public void sessionCreated(HttpSessionEvent arg0) {
delegate.sessionCreated(arg0);
}
/**
* @see javax.servlet.http.HttpSessionListener#sessionDestroyed(javax.servlet.http.HttpSessionEvent)
*/
@Override
public void sessionDestroyed(HttpSessionEvent arg0) {
delegate.sessionDestroyed(arg0);
}
}