EcmContextLoaderListener.java

/* Index ECM Engine - A system for managing the capture (when created
 * or received), classification (cataloguing), storage, retrieval,
 * revision, sharing, reuse and disposition of documents.
 *
 * Copyright (C) 2008 Regione Piemonte
 * Copyright (C) 2008 Provincia di Torino
 * Copyright (C) 2008 Comune di Torino
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 */

package it.doqui.index.ecmengine.business.startup.jboss;

import org.springframework.web.context.ContextLoader;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

/**
 * Bootstrap listener to start up Spring's root WebApplicationContext.
 * Simply delegates to ContextLoader.
 *
 * <p>This listener should be registered after Log4jConfigListener in web.xml,
 * if the latter is used.
 *
 * <p>For Servlet 2.2 containers and Servlet 2.3 ones that do not initalize
 * listeners before servlets, use ContextLoaderServlet. See the latter's Javadoc
 * for details.
 *
 * @author Juergen Hoeller
 * @since 17.02.2003
 * @see ContextLoader
 * @see ContextLoaderServlet
 * @see org.springframework.web.util.Log4jConfigListener
 */
public class EcmContextLoaderListener implements ServletContextListener {

	private ContextLoader contextLoader;


	/**
	 * Initialize the root web application context.
	 */
	public void contextInitialized(ServletContextEvent event) {
		this.contextLoader = createContextLoader();
		this.contextLoader.initWebApplicationContext(event.getServletContext());
	}

	/**
	 * Create the ContextLoader to use. Can be overridden in subclasses.
	 * @return the new ContextLoader
	 */
	protected ContextLoader createContextLoader() {
		return new EcmContextLoader();
	}

	/**
	 * Return the ContextLoader used by this listener.
	 */
	public ContextLoader getContextLoader() {
		return contextLoader;
	}


	/**
	 * Close the root web application context.
	 */
	public void contextDestroyed(ServletContextEvent event) {
		if (this.contextLoader != null) {
			this.contextLoader.closeWebApplicationContext(event.getServletContext());
		}
	}

}