org.eclipse.osbp.vaaclipse.addons.app/src/org/eclipse/osbp/vaaclipse/addons/app/servlet/ServletContextListenerServletAdaptor.java

/*******************************************************************************
 * Copyright (c) 2012, 2014 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Information:
 * 		Based on original sources of 
 *				- com.c4biz.osgiutils.vaadin.equinox.shiro.ServletContextListenerServletAdaptor from Cristiano Gaviao
 *
 * Contributors:
 *    Florian Pirchner - migrated to vaadin 7 and copied into org.eclipse.osbp namespace
 *    
 *******************************************************************************/
package org.eclipse.osbp.vaaclipse.addons.app.servlet;

import java.io.IOException;

import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

/**
 * The Class ServletContextListenerServletAdaptor.
 */
public class ServletContextListenerServletAdaptor implements Servlet {
	
	/** The config. */
	private ServletConfig config;
	
	/** The listener. */
	private ServletContextListener listener;
	
	/** The delegate. */
	private Servlet delegate;

	/**
	 * Instantiates a new servlet context listener servlet adaptor.
	 *
	 * @param listener
	 *            the listener
	 * @param delegate
	 *            the delegate
	 */
	public ServletContextListenerServletAdaptor(
			ServletContextListener listener, Servlet delegate) {
		this.listener = listener;
		this.delegate = delegate;
	}

	/* (non-Javadoc)
	 * @see javax.servlet.Servlet#init(javax.servlet.ServletConfig)
	 */
	public void init(ServletConfig config) throws ServletException {
		this.config = config;
		listener.contextInitialized(new ServletContextEvent(config
				.getServletContext()));
		delegate.init(config);
	}

	/* (non-Javadoc)
	 * @see javax.servlet.Servlet#service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
	 */
	public void service(ServletRequest req, ServletResponse resp)
			throws ServletException, IOException {
		delegate.service(req, resp);
	}

	/* (non-Javadoc)
	 * @see javax.servlet.Servlet#destroy()
	 */
	public void destroy() {
		delegate.destroy();
		listener.contextDestroyed(new ServletContextEvent(config
				.getServletContext()));
		config = null;
	}

	/* (non-Javadoc)
	 * @see javax.servlet.Servlet#getServletConfig()
	 */
	public ServletConfig getServletConfig() {
		return config;
	}

	/* (non-Javadoc)
	 * @see javax.servlet.Servlet#getServletInfo()
	 */
	public String getServletInfo() {
		return "";
	}
}