001    /*
002     * JBoss DNA (http://www.jboss.org/dna)
003     * See the COPYRIGHT.txt file distributed with this work for information
004     * regarding copyright ownership.  Some portions may be licensed
005     * to Red Hat, Inc. under one or more contributor license agreements.
006     * See the AUTHORS.txt file in the distribution for a full listing of 
007     * individual contributors. 
008     *
009     * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA
010     * is licensed to you under the terms of the GNU Lesser General Public License as
011     * published by the Free Software Foundation; either version 2.1 of
012     * the License, or (at your option) any later version.
013     *
014     * JBoss DNA is distributed in the hope that it will be useful,
015     * but WITHOUT ANY WARRANTY; without even the implied warranty of
016     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017     * Lesser General Public License for more details.
018     *
019     * You should have received a copy of the GNU Lesser General Public
020     * License along with this software; if not, write to the Free
021     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
022     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
023     */
024    package org.jboss.dna.web.jcr.rest;
025    
026    import javax.servlet.ServletContextEvent;
027    import javax.servlet.ServletContextListener;
028    import org.jboss.dna.web.jcr.rest.spi.RepositoryProvider;
029    import net.jcip.annotations.NotThreadSafe;
030    
031    
032    /**
033     * Servlet context listener that is responsible for {@link RepositoryFactory#initialize(javax.servlet.ServletContext) initializing}
034     * the {@link RepositoryFactory repository factory}.
035     * <p>
036     * This class is not thread safe, but in practice this does not matter as the servlet container must ensure that only
037     * a single instance of this exists per web context and that it is only called in a single-threaded manner.
038     * </p>
039     * @see RepositoryFactory
040     */
041    @NotThreadSafe
042    public class DnaJcrDeployer implements ServletContextListener {
043    
044        /**
045         * Alerts the repository factory that the web application is shutting down
046         * @see RepositoryFactory#shutdown()
047         * @see RepositoryProvider#shutdown()
048         */
049        public void contextDestroyed( ServletContextEvent event ) {
050            RepositoryFactory.shutdown();
051        }
052    
053        /**
054         * Initializes the repository factory
055         * @see RepositoryFactory#initialize(javax.servlet.ServletContext)
056         */
057        public void contextInitialized( ServletContextEvent event ) {
058            RepositoryFactory.initialize(event.getServletContext());
059        }
060    }