    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/ogcwebservices/wfs/GetGmlObjectHandler.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.wfs;
    038
    039    import static java.lang.Integer.parseInt;
    040    import static java.util.Collections.singleton;
    041    import static org.deegree.framework.log.LoggerFactory.getLogger;
    042    import static org.deegree.i18n.Messages.get;
    043
    044    import java.util.ArrayList;
    045    import java.util.Set;
    046
    047    import org.deegree.datatypes.QualifiedName;
    048    import org.deegree.framework.log.ILogger;
    049    import org.deegree.i18n.Messages;
    050    import org.deegree.io.datastore.Datastore;
    051    import org.deegree.io.datastore.DatastoreException;
    052    import org.deegree.io.datastore.schema.MappedFeatureType;
    053    import org.deegree.model.crs.UnknownCRSException;
    054    import org.deegree.model.feature.Feature;
    055    import org.deegree.model.feature.FeatureCollection;
    056    import org.deegree.model.filterencoding.FeatureFilter;
    057    import org.deegree.model.filterencoding.FeatureId;
    058    import org.deegree.model.filterencoding.Filter;
    059    import org.deegree.ogcwebservices.InconsistentRequestException;
    060    import org.deegree.ogcwebservices.InvalidParameterValueException;
    061    import org.deegree.ogcwebservices.OGCWebServiceException;
    062    import org.deegree.ogcwebservices.wfs.capabilities.FormatType;
    063    import org.deegree.ogcwebservices.wfs.configuration.WFSConfiguration;
    064    import org.deegree.ogcwebservices.wfs.operation.GetGmlObject;
    065    import org.deegree.ogcwebservices.wfs.operation.GmlResult;
    066    import org.deegree.ogcwebservices.wfs.operation.Query;
    067
    068    /**
    069     * <code>GetGmlObjectHandler</code>
    070     *
    071     * @author <a href="mailto:schmitz@lat-lon.de">Andreas Schmitz</a>
    072     * @author last edited by: $Author: mschneider $
    073     *
    074     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    075     */
    076    class GetGmlObjectHandler {
    077
    078        private static final ILogger LOG = getLogger( GetGmlObjectHandler.class );
    079
    080        private WFSConfiguration config;
    081
    082        GetGmlObjectHandler( WFSConfiguration config ) {
    083            this.config = config;
    084        }
    085
    086        GmlResult handleRequest( GetGmlObject request ) {
    087            if ( !config.hasUniquePrefixMapping() ) {
    088                return new GmlResult( request, new InconsistentRequestException( get( "WFS_CONF_FT_PREFICES_NOT_UNIQUE2" ) ) );
    089            }
    090            String objectId = request.getObjectId();
    091            MappedFeatureType type = config.getFeatureType( objectId );
    092
    093            if ( type == null ) {
    094                LOG.logDebug( "The GML type could not be determined for the incoming GMLObjectID" );
    095                return new GmlResult( request, new InvalidParameterValueException( "getgmlobject",
    096                                                                                   get( "WFS_NO_SUCH_FEATURE", objectId ) ) );
    097            }
    098
    099            if ( type.isAbstract() ) {
    100                String msg = Messages.getMessage( "WFS_FEATURE_TYPE_ABSTRACT", type.getName() );
    101                return new GmlResult( request, new OGCWebServiceException( "getgmlobject", msg ) );
    102            }
    103            if ( !type.isVisible() ) {
    104                String msg = Messages.getMessage( "WFS_FEATURE_TYPE_INVISIBLE", type.getName() );
    105                return new GmlResult( request, new OGCWebServiceException( "getgmlobject", msg ) );
    106            }
    107
    108            int idx = objectId.indexOf( "_GEOM_" );
    109            int geom = -1;
    110            if ( idx > 0 ) {
    111                try {
    112                    geom = parseInt( objectId.substring( idx + 6 ) );
    113                } catch ( NumberFormatException e ) {
    114                    LOG.logDebug( "Stack trace: ", e );
    115                    return new GmlResult( request, new InvalidParameterValueException( "getgmlobject",
    116                                                                                       get( "WFS_NO_SUCH_FEATURE",
    117                                                                                            request.getObjectId() ) ) );
    118                }
    119                objectId = objectId.substring( 0, idx );
    120                LOG.logDebug( "Trying to find geometry object number " + geom );
    121            }
    122
    123            LOG.logDebug( "Feature ID: ", objectId );
    124
    125            Set<FeatureId> set = singleton( new FeatureId( objectId ) );
    126            Filter filter = new FeatureFilter( new ArrayList<FeatureId>( set ) );
    127
    128            Datastore ds = type.getGMLSchema().getDatastore();
    129
    130            Query q = new Query( null, null, null, null, null, new QualifiedName[] { type.getName() }, null, null, filter,
    131                                 null, -1, -1 );
    132            try {
    133                FeatureCollection col = ds.performQuery( q, new MappedFeatureType[] { type } );
    134                if ( col.size() == 0 ) {
    135                    return new GmlResult( request, new InvalidParameterValueException( "getgmlobject",
    136                                                                                       get( "WFS_NO_SUCH_FEATURE",
    137                                                                                            request.getObjectId() ) ) );
    138                }
    139                Feature feature = col.getFeature( 0 );
    140
    141                // different formats are not supported anyway, so just use the first one
    142                FormatType format = config.getFeatureTypeList().getFeatureType( type.getName() ).getOutputFormats()[0];
    143
    144                if ( geom > -1 ) {
    145                    try {
    146                        return new GmlResult( request, feature.getGeometryPropertyValues()[geom], format );
    147                    } catch ( ArrayIndexOutOfBoundsException e ) {
    148                        return new GmlResult( request, new InvalidParameterValueException( "getgmlobject",
    149                                                                                           get( "WFS_NO_SUCH_FEATURE",
    150                                                                                                request.getObjectId() ) ) );
    151                    }
    152                }
    153
    154                return new GmlResult( request, feature, format );
    155            } catch ( DatastoreException e ) {
    156                LOG.logDebug( "Stack trace: ", e );
    157                return new GmlResult( request, new OGCWebServiceException( "getgmlobject", e.getMessage() ) );
    158            } catch ( UnknownCRSException e ) {
    159                LOG.logDebug( "Stack trace: ", e );
    160                return new GmlResult( request, new OGCWebServiceException( "getgmlobject", e.getMessage() ) );
    161            }
    162        }
    163
    164    }