    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/ogcwebservices/wfs/WFServiceFactory.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.ogcwebservices.wfs;
    037
    038    import java.io.IOException;
    039    import java.net.URL;
    040
    041    import org.deegree.framework.log.ILogger;
    042    import org.deegree.framework.log.LoggerFactory;
    043    import org.deegree.framework.xml.InvalidConfigurationException;
    044    import org.deegree.i18n.Messages;
    045    import org.deegree.io.datastore.DatastoreException;
    046    import org.deegree.io.datastore.LockManager;
    047    import org.deegree.ogcwebservices.OGCWebServiceException;
    048    import org.deegree.ogcwebservices.wfs.configuration.WFSConfiguration;
    049    import org.deegree.ogcwebservices.wfs.configuration.WFSConfigurationDocument;
    050    import org.xml.sax.SAXException;
    051
    052    /**
    053     * Factory class for creating instances of {@link WFService}.
    054     *
    055     * TODO manage several instances of different WFServices in a pool
    056     *
    057     * @see WFService
    058     *
    059     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth </a>
    060     * @author last edited by: $Author: mschneider $
    061     *
    062     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    063     */
    064    public class WFServiceFactory {
    065
    066        private static final ILogger LOG = LoggerFactory.getLogger( WFServiceFactory.class );
    067
    068        private static WFSConfiguration CONFIG;
    069
    070        private static boolean lockManagerInitialized;
    071
    072        private WFServiceFactory() {
    073            // prevent instantiation
    074        }
    075
    076        /**
    077         *
    078         * @return a WFService instance.
    079         * @throws OGCWebServiceException
    080         */
    081        public static WFService createInstance()
    082                                throws OGCWebServiceException {
    083            if ( CONFIG == null ) {
    084                throw new OGCWebServiceException( WFServiceFactory.class.getName(),
    085                                                  "configuration has not been initialized" );
    086            }
    087            synchronized ( WFServiceFactory.class ) {
    088                if ( !lockManagerInitialized ) {
    089                    try {
    090                        LockManager.initialize( CONFIG.getDeegreeParams().getLockManagerDirectory() );
    091                    } catch ( DatastoreException e ) {
    092                        LOG.logError( e.getMessage(), e );
    093                        throw new OGCWebServiceException( "WFSServiceFactory", e.getMessage() );
    094                    }
    095                    lockManagerInitialized = true;
    096                }
    097            }
    098            return new WFService( CONFIG );
    099        }
    100
    101        /**
    102         *
    103         * @param wfsConfiguration
    104         * @return a WFSService instance created from the given configuration.
    105         * @throws OGCWebServiceException
    106         */
    107        public static WFService createInstance( WFSConfiguration wfsConfiguration )
    108                                throws OGCWebServiceException {
    109            LOG.logDebug( "Creating WFService instance." );
    110            synchronized ( WFServiceFactory.class ) {
    111                if ( !lockManagerInitialized ) {
    112                    try {
    113                        LockManager.initialize( wfsConfiguration.getDeegreeParams().getLockManagerDirectory() );
    114                    } catch ( DatastoreException e ) {
    115                        LOG.logError( e.getMessage(), e );
    116                        throw new OGCWebServiceException( "WFSServiceFactory", e.getMessage() );
    117                    }
    118                    lockManagerInitialized = true;
    119                }
    120            }
    121            return new WFService( wfsConfiguration );
    122        }
    123
    124        /**
    125         * Sets the <code>WFSConfiguration</code>. Afterwards, all <code>WFService</code> instances returned by
    126         * <code>createInstance()</code> will use this configuration.
    127         *
    128         * @param config
    129         * @throws InvalidConfigurationException
    130         */
    131        public synchronized static void setConfiguration( WFSConfiguration config )
    132                                throws InvalidConfigurationException {
    133            validateConfiguration( config );
    134            CONFIG = config;
    135            // TODO: if service instances have already been created
    136            // - destroy all instances
    137            // - create new service instances and put them in the pool
    138        }
    139
    140        /**
    141         *
    142         * @param serviceConfigurationURL
    143         * @throws InvalidConfigurationException
    144         * @throws IOException
    145         */
    146        public synchronized static void setConfiguration( URL serviceConfigurationURL )
    147                                throws InvalidConfigurationException, IOException {
    148
    149            try {
    150                WFSConfigurationDocument cd = new WFSConfigurationDocument();
    151                cd.load( serviceConfigurationURL );
    152                setConfiguration( cd.getConfiguration() );
    153            } catch ( InvalidConfigurationException e ) {
    154                throw new InvalidConfigurationException( "WFSServiceFactory", e.getMessage() );
    155            } catch ( SAXException e ) {
    156                throw new InvalidConfigurationException( "WFSServiceFactory", e.getMessage() );
    157            }
    158
    159        }
    160
    161        /**
    162         * @return CONFIG
    163         */
    164        public static WFSConfiguration getConfiguration() {
    165            return CONFIG;
    166        }
    167
    168        private static void validateConfiguration( WFSConfiguration config )
    169                                throws InvalidConfigurationException {
    170            String[] versions = config.getServiceIdentification().getServiceTypeVersions();
    171            for ( String version : versions ) {
    172                if ( !WFService.VERSION.equals( version ) ) {
    173                    String msg = Messages.getMessage( "WFS_CONF_UNSUPPORTED_VERSION", version, WFService.VERSION );
    174                    throw new InvalidConfigurationException( msg );
    175                }
    176            }
    177        }
    178    }