001 //$HeadURL: https://sushibar/svn/deegree/base/trunk/resources/eclipse/svn_classfile_header_template.xml $
002 /*---------------- FILE HEADER ------------------------------------------
003 This file is part of deegree.
004 Copyright (C) 2001-2008 by:
005 Department of Geography, University of Bonn
006 http://www.giub.uni-bonn.de/deegree/
007 lat/lon GmbH
008 http://www.lat-lon.de
009
010 This library is free software; you can redistribute it and/or
011 modify it under the terms of the GNU Lesser General Public
012 License as published by the Free Software Foundation; either
013 version 2.1 of the License, or (at your option) any later version.
014 This library is distributed in the hope that it will be useful,
015 but WITHOUT ANY WARRANTY; without even the implied warranty of
016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017 Lesser General Public License for more details.
018 You should have received a copy of the GNU Lesser General Public
019 License along with this library; if not, write to the Free Software
020 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
021 Contact:
022
023 Andreas Poth
024 lat/lon GmbH
025 Aennchenstr. 19
026 53177 Bonn
027 Germany
028 E-Mail: poth@lat-lon.de
029
030 Prof. Dr. Klaus Greve
031 Department of Geography
032 University of Bonn
033 Meckenheimer Allee 166
034 53115 Bonn
035 Germany
036 E-Mail: greve@giub.uni-bonn.de
037 ---------------------------------------------------------------------------*/
038
039 package org.deegree.ogcwebservices.wms;
040
041 import java.util.LinkedList;
042
043 import org.deegree.datatypes.QualifiedName;
044 import org.deegree.framework.xml.XMLFragment;
045 import org.deegree.framework.xml.XMLTools;
046 import org.deegree.i18n.Messages;
047 import org.deegree.ogcwebservices.OGCWebServiceException;
048 import org.deegree.ogcwebservices.wms.capabilities.Layer;
049 import org.deegree.ogcwebservices.wms.configuration.AbstractDataSource;
050 import org.deegree.ogcwebservices.wms.configuration.LocalWFSDataSource;
051 import org.deegree.ogcwebservices.wms.configuration.WMSConfigurationType;
052 import org.deegree.ogcwebservices.wms.operation.DescribeLayer;
053 import org.deegree.ogcwebservices.wms.operation.DescribeLayerResult;
054 import org.w3c.dom.Element;
055
056 /**
057 * <code>DescribeLayerHandler</code>
058 *
059 * @author <a href="mailto:schmitz@lat-lon.de">Andreas Schmitz</a>
060 * @author last edited by: $Author:$
061 *
062 * @version $Revision:$, $Date:$
063 */
064 public class DescribeLayerHandler {
065
066 /**
067 * @param request
068 * @param configuration
069 * @return a result object with the XML result
070 * @throws OGCWebServiceException
071 */
072 public DescribeLayerResult perform( DescribeLayer request, WMSConfigurationType configuration )
073 throws OGCWebServiceException {
074 String[] layers = request.getLayers();
075
076 LinkedList<Layer> ls = new LinkedList<Layer>();
077 // check layers for existance
078 for ( String l : layers ) {
079 Layer layer = configuration.getLayer( l );
080 if ( layer == null ) {
081 throw new OGCWebServiceException( Messages.getMessage( "WMS_UNKNOWNLAYER", l ) );
082 }
083 ls.add( layer );
084 }
085
086 XMLFragment doc = new XMLFragment( new QualifiedName( "WMS_DescribeLayerResponse" ) );
087 Element root = doc.getRootElement();
088 root.setAttribute( "version", "1.1.1" );
089
090 for ( Layer l : ls ) {
091 Element lay = XMLTools.appendElement( root, null, "LayerDescription" );
092 lay.setAttribute( "name", l.getName() );
093 AbstractDataSource[] ds = l.getDataSource();
094 if ( ds != null ) {
095 for ( AbstractDataSource d : ds ) {
096 if ( d instanceof LocalWFSDataSource ) {
097 // lay.setAttribute( "wfs", "unknown" );
098 LocalWFSDataSource wfsds = (LocalWFSDataSource) d;
099 Element e = XMLTools.appendElement( lay, null, "Query" );
100 QualifiedName qn = wfsds.getName();
101 e.setAttribute( "xmlns:" + qn.getPrefix(), qn.getNamespace().toASCIIString() );
102 e.setAttribute( "typeName", qn.getPrefixedName() );
103 }
104 }
105 }
106 }
107
108 return new DescribeLayerResult( request, doc );
109 }
110
111 }