    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/ogcwebservices/wpvs/WPVServiceFactory.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
    037    package org.deegree.ogcwebservices.wpvs;
    038
    039    import java.io.IOException;
    040    import java.net.URL;
    041
    042    import org.deegree.framework.xml.InvalidConfigurationException;
    043    import org.deegree.ogcwebservices.wpvs.configuration.WPVSConfiguration;
    044    import org.deegree.ogcwebservices.wpvs.configuration.WPVSConfigurationDocument;
    045    import org.xml.sax.SAXException;
    046
    047    /**
    048     * Factory class for creating instances of <code>WFService</code>.
    049     *
    050     * @author <a href="mailto:taddei@lat-lon.de">Ugo Taddei</a>
    051     * @author last edited by: $Author: mschneider $
    052     *
    053     * $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    054     *
    055     */
    056    public class WPVServiceFactory {
    057
    058        private static WPVSConfiguration CONFIG;
    059
    060        private WPVServiceFactory() {
    061            // prevent instantiation
    062        }
    063
    064        /**
    065         * Creates an instance of a WPVService
    066         *
    067         * @return a wpvService class with the WPVSConfiguration if the WPVSConfiguration ==
    068         *         <code>null</code> null will be returned.
    069         */
    070        public static WPVService createInstance() {
    071            if ( CONFIG != null )
    072                return new WPVService( CONFIG );
    073            return null;
    074        }
    075
    076        /**
    077         * Creates a new instance of a WPVService based on <code>config</code>
    078         *
    079         * @param config
    080         *            the configuration object used to initalize the new instance
    081         * @return a new WPVService Instance, instantiated with the given WPVSConfiguration
    082         */
    083        public static WPVService getInstance( WPVSConfiguration config ) {
    084            return new WPVService( config );
    085        }
    086
    087        /**
    088         * Sets the <code>WPVSConfiguration</code>. Afterwards, all <code>WPVSService</code>
    089         * instances returned by <code>createInstance()</code> will use this configuration.
    090         *
    091         * @param wpvsConfiguration
    092         */
    093        public synchronized static void setConfiguration( WPVSConfiguration wpvsConfiguration ) {
    094            CONFIG = wpvsConfiguration;
    095        }
    096
    097        /**
    098         * Sets the service configuration used in this object to be that pointed at by the
    099         * serviceConfigurationURL
    100         *
    101         * @param serviceConfigurationURL
    102         *            the URL pointing at the configuration file for a WPV Service
    103         * @throws InvalidConfigurationException
    104         *             if the configuration is invalid
    105         * @throws IOException
    106         */
    107        public synchronized static void setConfiguration( URL serviceConfigurationURL )
    108                                throws InvalidConfigurationException, IOException {
    109            try {
    110                WPVSConfigurationDocument wpvsConfigDoc = new WPVSConfigurationDocument();
    111                wpvsConfigDoc.load( serviceConfigurationURL );
    112                WPVServiceFactory.setConfiguration( wpvsConfigDoc.parseConfiguration() );
    113            } catch ( InvalidConfigurationException e ) {
    114                throw new InvalidConfigurationException( "WPVServiceFactory", e.getMessage() );
    115            } catch ( SAXException e ) {
    116                throw new InvalidConfigurationException( "WPVServiceFactory", e.getMessage() );
    117            }
    118        }
    119    }