    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/ogcwebservices/wpvs/configuration/LocalWMSDataSource.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.xml.InvalidConfigurationException;
    047    import org.deegree.i18n.Messages;
    048    import org.deegree.model.spatialschema.Surface;
    049    import org.deegree.ogcwebservices.OGCWebService;
    050    import org.deegree.ogcwebservices.OGCWebServiceException;
    051    import org.deegree.ogcwebservices.wms.WMServiceFactory;
    052    import org.deegree.ogcwebservices.wms.configuration.WMSConfigurationDocument;
    053    import org.deegree.ogcwebservices.wms.configuration.WMSConfigurationType;
    054    import org.deegree.ogcwebservices.wms.operation.GetMap;
    055    import org.deegree.ogcwebservices.wpvs.capabilities.OWSCapabilities;
    056    import org.xml.sax.SAXException;
    057
    058    /**
    059     * This class represents a local WMS dataSource object.
    060     *
    061     * @author <a href="mailto:mays@lat-lon.de">Judit Mays</a>
    062     * @author last edited by: $Author: mschneider $
    063     *
    064     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    065     *
    066     */
    067    public class LocalWMSDataSource extends AbstractDataSource {
    068
    069        private Color[] transparentColors;
    070
    071        private static Map<URL, WMSConfigurationType> cache = new ConcurrentHashMap<URL, WMSConfigurationType>();
    072
    073        /**
    074         * Creates a new <code>LocalWMSDataSource</code> object from the given parameters.
    075         *
    076         * @param name
    077         * @param owsCapabilities
    078         * @param validArea
    079         * @param minScaleDenominator
    080         * @param maxScaleDenominator
    081         * @param filterCondition
    082         * @param transparentColors
    083         */
    084        public LocalWMSDataSource( QualifiedName name, OWSCapabilities owsCapabilities,
    085                                   Surface validArea, double minScaleDenominator,
    086                                   double maxScaleDenominator, GetMap filterCondition,
    087                                   Color[] transparentColors ) {
    088
    089            super( AbstractDataSource.LOCAL_WMS, name, owsCapabilities, validArea, minScaleDenominator,
    090                   maxScaleDenominator, filterCondition );
    091            this.transparentColors = transparentColors;
    092        }
    093
    094        /**
    095         * The <code>filterCondition</code> is a map of key-value-pairs of an incomplete WMSRequest.
    096         *
    097         * @return Returns the filterCondition as a map of key-value-pairs.
    098         */
    099        public GetMap getPartialGetMapRequest() {
    100            return (GetMap) getFilterCondition();
    101        }
    102
    103        /**
    104         * @return Returns the transparentColors.
    105         */
    106        public Color[] getTransparentColors() {
    107            return transparentColors;
    108        }
    109
    110        /**
    111         * @throws OGCWebServiceException
    112         * @see org.deegree.ogcwebservices.wpvs.configuration.AbstractDataSource#getOGCWebService()
    113         */
    114        @Override
    115        public OGCWebService getOGCWebService()
    116                                throws OGCWebServiceException {
    117            WMSConfigurationType wmsConfig = null;
    118            synchronized ( this ) {
    119                URL url = getOwsCapabilities().getOnlineResource();
    120                wmsConfig = cache.get( url );
    121                if ( !cache.containsKey( url ) || wmsConfig == null ) {
    122                    WMSConfigurationDocument wmsDoc = new WMSConfigurationDocument();
    123                    try {
    124                        wmsDoc.load( getOwsCapabilities().getOnlineResource() );
    125                        wmsConfig = wmsDoc.parseConfiguration();
    126                        cache.put( url, wmsConfig );
    127                    } catch ( IOException e ) {
    128                        throw new OGCWebServiceException(
    129                                                          Messages.getMessage(
    130                                                                               "WPVS_DATASOURCE_CAP_ERROR",
    131                                                                               toString() )
    132                                                                                  + e.getMessage() );
    133                    } catch ( SAXException e ) {
    134                        throw new OGCWebServiceException(
    135                                                          Messages.getMessage(
    136                                                                               "WPVS_DATASOURCE_CAP_ERROR",
    137                                                                               toString() )
    138                                                                                  + e.getMessage() );
    139                    } catch ( InvalidConfigurationException e ) {
    140                        throw new OGCWebServiceException(
    141                                                          Messages.getMessage(
    142                                                                               "WPVS_DATASOURCE_CAP_ERROR",
    143                                                                               toString() )
    144                                                                                  + e.getMessage() );
    145                    }
    146                }
    147            }
    148            return WMServiceFactory.getWMSInstance( wmsConfig );
    149        }
    150
    151    }