    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/enterprise/servlet/CSWHarvestingContextListener.java $
    002    /*----------------------------------------------------------------------------
    003     This file is part of deegree, http://deegree.org/
    004     Copyright (C) 2001-2009 by:
    005     Department of Geography, University of Bonn
    006     and
    007     lat/lon GmbH
    008
    009     This library is free software; you can redistribute it and/or modify it under
    010     the terms of the GNU Lesser General Public License as published by the Free
    011     Software Foundation; either version 2.1 of the License, or (at your option)
    012     any later version.
    013     This library is distributed in the hope that it will be useful, but WITHOUT
    014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
    016     details.
    017     You should have received a copy of the GNU Lesser General Public License
    018     along with this library; if not, write to the Free Software Foundation, Inc.,
    019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    020
    021     Contact information:
    022
    023     lat/lon GmbH
    024     Aennchenstr. 19, 53177 Bonn
    025     Germany
    026     http://lat-lon.de/
    027
    028     Department of Geography, University of Bonn
    029     Prof. Dr. Klaus Greve
    030     Postfach 1147, 53001 Bonn
    031     Germany
    032     http://www.geographie.uni-bonn.de/deegree/
    033
    034     e-mail: info@deegree.org
    035     ----------------------------------------------------------------------------*/
    036    package org.deegree.enterprise.servlet;
    037
    038    import java.net.URL;
    039    import java.util.Arrays;
    040    import java.util.Collections;
    041    import java.util.List;
    042
    043    import javax.servlet.ServletContext;
    044    import javax.servlet.ServletContextEvent;
    045    import javax.servlet.ServletContextListener;
    046
    047    import org.deegree.framework.log.ILogger;
    048    import org.deegree.framework.log.LoggerFactory;
    049    import org.deegree.framework.util.WebappResourceResolver;
    050    import org.deegree.ogcwebservices.OGCWebServiceException;
    051    import org.deegree.ogcwebservices.csw.CSWFactory;
    052    import org.deegree.ogcwebservices.csw.capabilities.CatalogueCapabilities;
    053    import org.deegree.ogcwebservices.csw.manager.Manager_2_0_0;
    054    import org.deegree.ogcwebservices.csw.manager.Manager_2_0_2;
    055
    056    /**
    057     * This class can be used to start up CSW harvesting thread when a servlet context will be
    058     * initialized and to free all assigned resources if it will be destroyed.<br>
    059     * For this it has to be registered to a servelt context making a &lt;listener&gt; entry to web.xml
    060     *
    061     * <pre>
    062     *  &lt;web-app&gt;
    063     *   &lt;listener&gt;
    064     *       &lt;listener-class&gt;com.listeners.MyContextListener&lt;/listener-class&gt;
    065     *   &lt;/listener&gt;
    066     *   &lt;servlet&gt;
    067     *   ...
    068     *   &lt;/servlet&gt;
    069     *   &lt;servlet-mapping&gt;
    070     *    ...
    071     *   &lt;/servlet-mapping&gt;
    072     *  &lt;/web-app&gt;
    073     * &lt;pre&gt;
    074     * &#064;version $Revision: 19475 $
    075     * &#064;author &lt;a href=&quot;mailto:poth@lat-lon.de&quot;&gt;Andreas Poth&lt;/a&gt;
    076     * &#064;author last edited by: $Author: lbuesching $
    077     * &#064;version 1.0. $Revision: 19475 $, $Date: 2009-09-02 14:51:48 +0200 (Mi, 02. Sep 2009) $
    078     *
    079     * @since 2.0
    080     *
    081     */
    082    public class CSWHarvestingContextListener implements ServletContextListener {
    083
    084        private static final ILogger LOG = LoggerFactory.getLogger( CSWHarvestingContextListener.class );
    085
    086        /**
    087         * @param event
    088         */
    089        public void contextDestroyed( ServletContextEvent event ) {
    090            // Manager.stopAllHarvester();
    091        }
    092
    093        /**
    094         * @param event
    095         */
    096        public void contextInitialized( ServletContextEvent event ) {
    097            ServletContext sc = event.getServletContext();
    098            String s = sc.getInitParameter( "CSW.config" );
    099            if ( s == null ) {
    100                s = sc.getInitParameter( "csw.config" );
    101            }
    102
    103            try {
    104                URL url = WebappResourceResolver.resolveFileLocation( s, sc, LOG );
    105                CSWFactory.setConfiguration( url );
    106            } catch ( Exception e ) {
    107                LOG.logError( e.getMessage(), e );
    108                throw new RuntimeException( Messages.getString( "CSWHarvestingContextListener.ONINIT" ) );
    109            }
    110
    111            String version = "2.0.0";
    112            try {
    113                if ( CSWFactory.getService().getCapabilities() instanceof CatalogueCapabilities ) {
    114                    CatalogueCapabilities caps = (CatalogueCapabilities) CSWFactory.getService().getCapabilities();
    115                    List<String> versions = Arrays.asList( caps.getServiceIdentification().getServiceTypeVersions() );
    116                    Collections.sort( versions );
    117                    version = versions.get( versions.size() - 1 );
    118                }
    119            } catch ( OGCWebServiceException e ) {
    120                LOG.logError( Messages.getString( "CSWHarvestingContextListener.ONDETECTINGVERSION" ), e );
    121            }
    122
    123            if ( "2.0.2".equals( version ) ) {
    124                Manager_2_0_2.startAllHarvester( version );
    125            } else {
    126                Manager_2_0_0.startAllHarvester( version );
    127            }
    128        }
    129
    130    }