    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/ogcwebservices/wpvs/configuration/RemoteWMSDataSource.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.configuration;
    038
    039    import java.awt.Color;
    040    import java.io.IOException;
    041    import java.net.URL;
    042    import java.util.Map;
    043    import java.util.concurrent.ConcurrentHashMap;
    044
    045    import org.deegree.datatypes.QualifiedName;
    046    import org.deegree.framework.log.ILogger;
    047    import org.deegree.framework.log.LoggerFactory;
    048    import org.deegree.framework.xml.XMLParsingException;
    049    import org.deegree.i18n.Messages;
    050    import org.deegree.model.spatialschema.Surface;
    051    import org.deegree.ogcwebservices.OGCWebService;
    052    import org.deegree.ogcwebservices.OGCWebServiceException;
    053    import org.deegree.ogcwebservices.getcapabilities.InvalidCapabilitiesException;
    054    import org.deegree.ogcwebservices.wms.RemoteWMService;
    055    import org.deegree.ogcwebservices.wms.capabilities.WMSCapabilities;
    056    import org.deegree.ogcwebservices.wms.capabilities.WMSCapabilitiesDocument;
    057    import org.deegree.ogcwebservices.wms.capabilities.WMSCapabilitiesDocumentFactory;
    058    import org.deegree.ogcwebservices.wms.operation.GetMap;
    059    import org.deegree.ogcwebservices.wpvs.capabilities.OWSCapabilities;
    060    import org.xml.sax.SAXException;
    061
    062    /**
    063     * This class represents a remote WPVS dataSource object.
    064     *
    065     * @author <a href="mailto:mays@lat-lon.de">Judit Mays</a>
    066     * @author last edited by: $Author: mschneider $
    067     *
    068     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    069     */
    070    public class RemoteWMSDataSource extends LocalWMSDataSource {
    071
    072        private static final ILogger LOG = LoggerFactory.getLogger( RemoteWMSDataSource.class );
    073
    074        private static Map<URL, WMSCapabilities> cache = new ConcurrentHashMap<URL, WMSCapabilities>();
    075
    076        /**
    077         * Creates a new <code>RemoteWMSDataSource</code> object from the given parameters.
    078         *
    079         * @param name
    080         * @param owsCapabilities
    081         * @param validArea
    082         * @param minScaleDenominator
    083         * @param maxScaleDenominator
    084         * @param filterCondition
    085         * @param transparentColors
    086         */
    087        public RemoteWMSDataSource( QualifiedName name, OWSCapabilities owsCapabilities, Surface validArea,
    088                                    double minScaleDenominator, double maxScaleDenominator, GetMap filterCondition,
    089                                    Color[] transparentColors ) {
    090
    091            super( name, owsCapabilities, validArea, minScaleDenominator, maxScaleDenominator, filterCondition,
    092                   transparentColors );
    093            this.setServiceType( AbstractDataSource.REMOTE_WMS );
    094
    095        }
    096
    097        /**
    098         * The <code>filterCondition</code> is a map of key-value-pairs of an incomplete WMSRequest.
    099         *
    100         * @return Returns the filterCondition as GetMap
    101         */
    102        public GetMap getFilterConditionMap() {
    103            return (GetMap) getFilterCondition();
    104        }
    105
    106        /**
    107         * @throws OGCWebServiceException
    108         * @see org.deegree.ogcwebservices.wpvs.configuration.AbstractDataSource#getOGCWebService()
    109         */
    110        @Override
    111        public OGCWebService getOGCWebService()
    112                                throws OGCWebServiceException {
    113            WMSCapabilities wmsCapabilities = null;
    114            synchronized ( this ) {
    115
    116                URL url = getOwsCapabilities().getOnlineResource();
    117                wmsCapabilities = cache.get( url );
    118                if ( !cache.containsKey( url ) || wmsCapabilities == null ) {
    119                    try {
    120                        WMSCapabilitiesDocument wmsCapsDoc = WMSCapabilitiesDocumentFactory.getWMSCapabilitiesDocument( url );
    121                        wmsCapabilities = (WMSCapabilities) wmsCapsDoc.parseCapabilities();
    122                        cache.put( url, wmsCapabilities );
    123                    } catch ( IOException e ) {
    124                        LOG.logError( e.getMessage(), e );
    125                        String msg = Messages.getMessage( "WPVS_DATASOURCE_CAP_ERROR", toString() );
    126                        throw new OGCWebServiceException( msg + e.getMessage() );
    127                    } catch ( SAXException e ) {
    128                        LOG.logError( e.getMessage(), e );
    129                        String msg = Messages.getMessage( "WPVS_DATASOURCE_CAP_ERROR", toString() );
    130                        throw new OGCWebServiceException( msg + e.getMessage() );
    131                    } catch ( InvalidCapabilitiesException e ) {
    132                        LOG.logError( e.getMessage(), e );
    133                        String msg = Messages.getMessage( "WPVS_DATASOURCE_CAP_ERROR", toString() );
    134                        throw new OGCWebServiceException( msg + e.getMessage() );
    135                    } catch ( XMLParsingException e ) {
    136                        LOG.logError( e.getMessage(), e );
    137                        String msg = Messages.getMessage( "WPVS_DATASOURCE_CAP_ERROR", toString() );
    138                        throw new OGCWebServiceException( msg + e.getMessage() );
    139                    }
    140                }
    141
    142            }
    143
    144            return new RemoteWMService( wmsCapabilities );
    145        }
    146    }