001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/portal/standard/sos/control/GetObservationListener.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.portal.standard.sos.control;
037
038 import java.util.ArrayList;
039 import java.util.HashMap;
040 import java.util.Iterator;
041 import java.util.List;
042
043 import org.deegree.enterprise.control.RPCMethodCall;
044 import org.deegree.enterprise.control.RPCParameter;
045 import org.deegree.enterprise.control.RPCStruct;
046 import org.deegree.framework.log.ILogger;
047 import org.deegree.framework.log.LoggerFactory;
048 import org.deegree.framework.xml.NamespaceContext;
049 import org.deegree.framework.xml.XMLTools;
050 import org.deegree.ogcbase.CommonNamespaces;
051 import org.deegree.ogcwebservices.sos.om.Observation;
052 import org.deegree.ogcwebservices.sos.om.ObservationArray;
053 import org.deegree.portal.standard.sos.Constants;
054 import org.deegree.portal.standard.sos.SOSClientException;
055 import org.w3c.dom.Document;
056 import org.w3c.dom.Element;
057 import org.w3c.dom.Node;
058
059 /**
060 * ...
061 *
062 * @author <a href="mailto:taddei@lat-lon.de">Ugo Taddei</a>
063 *
064 */
065 public class GetObservationListener extends AbstractSOSListener {
066
067 private static final NamespaceContext nsContext = CommonNamespaces.getNamespaceContext();
068
069 private static final ILogger LOG = LoggerFactory.getLogger( GetObservationListener.class );
070
071 /*
072 * (non-Javadoc)
073 *
074 * @see org.deegree.portal.sos.control.AbstractSOSListener#validateRequest(org.deegree.enterprise.control.RPCMethodCall)
075 */
076 @Override
077 protected void validateRequest( RPCMethodCall mc )
078 throws SOSClientException {
079 // TODO something
080 // Possible parameters:
081 // BoundingBox (mandatory)
082 // time (optional)
083 // platformID (optional)
084 // sensorID (optional)
085 // sos:Query
086
087 }
088
089 /*
090 * (non-Javadoc)
091 *
092 * @see org.deegree.portal.sos.control.AbstractSOSListener#createRequest(org.deegree.enterprise.control.RPCMethodCall)
093 */
094 @Override
095 protected String createRequest( RPCMethodCall mc )
096 throws SOSClientException {
097 RPCParameter[] params = mc.getParameters();
098 RPCStruct struct = (RPCStruct) params[0].getValue();
099
100 StringBuffer sb = new StringBuffer( 1000 );
101 sb.append( "<sos:GetObservation " );
102 sb.append( "xmlns:sos='http://www.opengis.net/sos' " );
103 sb.append( "xmlns:gml='http://www.opengis.net/gml' xmlns:ogc='http://www.opengis.net/ogc' " );
104 sb.append( "outputFormat='SWEObservation' " );
105 sb.append( "service='SOS' " );
106 sb.append( "version='0.8.0'>" );
107 sb.append( "<sos:platformID>" );
108 sb.append( struct.getMember( "platformID" ).getValue() );
109 sb.append( "</sos:platformID>" );
110 sb.append( "<sos:sensorID>" );
111 sb.append( struct.getMember( "sensorID" ).getValue() );
112 sb.append( "</sos:sensorID>" );
113
114 // TODO create bbox from request
115 // attention, there is code in deegree to extract bbox from RPC
116 sb.append( "<sos:BoundingBox srsName='EPSG:4326'>" );
117 sb.append( "<gml:coord>" );
118 sb.append( "<gml:X>0</gml:X>" );
119 sb.append( "<gml:Y>0</gml:Y>" );
120 sb.append( "</gml:coord>" );
121 sb.append( "<gml:coord>" );
122 sb.append( "<gml:X>50000000</gml:X>" );
123 sb.append( "<gml:Y>50000000</gml:Y>" );
124 sb.append( "</gml:coord>" );
125 sb.append( "</sos:BoundingBox>" );
126 sb.append( "</sos:GetObservation >" );
127
128 return sb.toString();
129 }
130
131 /*
132 * (non-Javadoc)
133 *
134 * @see org.deegree.portal.sos.control.AbstractSOSListener#createData(org.deegree.enterprise.control.RPCMethodCall,
135 * java.util.HashMap)
136 */
137 @Override
138 protected Object createData( RPCMethodCall mc, HashMap<String,Document> map )
139 throws SOSClientException {
140
141 ObservationArray obsArray = null;
142
143 List<Observation> obsList = new ArrayList<Observation>( 100 );
144
145 try {
146 Iterator<String> iterator = map.keySet().iterator();
147 while ( iterator.hasNext() ) {
148 String key = iterator.next();
149 Element e = map.get( key ).getDocumentElement();
150
151 List<Node> obsNodes = XMLTools.getNodes( e,
152 "/om:ObservationCollection/om:observationMembers/om:ObservationArray"
153 + "/om:observationMembers/gml:Observation",
154 nsContext );
155
156 for ( int i = 0; i < obsNodes.size(); i++ ) {
157
158 String timeStamp = XMLTools.getNodeAsString( obsNodes.get( i ),
159 "gml:timeStamp/gml:TimeInstant/gml:timePosition",
160 nsContext, null );
161
162 String value = XMLTools.getNodeAsString( obsNodes.get( i ), "gml:resultOf/gml:QuantityList",
163 nsContext, null );
164
165 obsList.add( new Observation( timeStamp, value ) );
166
167 }
168
169 Observation[] observations = obsList.toArray( new Observation[obsList.size()] );
170
171 obsArray = new ObservationArray( observations, null, null );
172
173 }
174 } catch ( Exception e ) {
175 LOG.logError( "Error creating observation array: " + e.getMessage() );
176 throw new SOSClientException( "Couldn't create sensor descriptions", e );
177 }
178
179 return obsArray;
180 }
181
182 /*
183 * (non-Javadoc)
184 *
185 * @see org.deegree.portal.sos.control.AbstractSOSListener#setNextPageData(java.lang.Object)
186 */
187 @Override
188 protected void setNextPageData( Object data ) {
189 this.getRequest().setAttribute( Constants.OBSERVATION_DATA, data );
190 }
191
192 }