com.legstar.host.servlet.ContextListener.java Source code

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Here is the source code for com.legstar.host.servlet.ContextListener.java

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/*******************************************************************************
 * Copyright (c) 2010 LegSem.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     LegSem - initial API and implementation
 ******************************************************************************/
package com.legstar.host.servlet;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.legstar.host.server.EngineHandler;

/**
 * We need to listen on the application shutdown in order to stop our engine properly.
 * The web.xml must declare this as a listener.
 *
 */
public class ContextListener implements ServletContextListener {

    /** Logger. */
    private final Log _log = LogFactory.getLog(ContextListener.class);

    /** {@inheritDoc}*/
    public void contextDestroyed(final ServletContextEvent event) {
        ServletContext context = event.getServletContext();
        EngineHandler engineHandler = (EngineHandler) context.getAttribute(InitiatorServlet.ENGINE_HANDLER_ID);
        if (engineHandler != null) {
            engineHandler.stop();
        }
        _log.info("LegStar engine context destroyed");
    }

    /** {@inheritDoc}*/
    public void contextInitialized(final ServletContextEvent arg0) {
        _log.info("LegStar engine context initialized");
    }

}