001 // $HeadURL: /cvsroot/deegree/src/org/deegree/ogcwebservices/wms/WMPService.java,v
002 // 1.3 2004/07/12 06:12:11 ap Exp $
003 /*---------------- FILE HEADER ------------------------------------------
004
005 This file is part of deegree.
006 Copyright (C) 2001-2006 by:
007 EXSE, Department of Geography, University of Bonn
008 http://www.giub.uni-bonn.de/deegree/
009 lat/lon GmbH
010 http://www.lat-lon.de
011
012 This library is free software; you can redistribute it and/or
013 modify it under the terms of the GNU Lesser General Public
014 License as published by the Free Software Foundation; either
015 version 2.1 of the License, or (at your option) any later version.
016
017 This library is distributed in the hope that it will be useful,
018 but WITHOUT ANY WARRANTY; without even the implied warranty of
019 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
020 Lesser General Public License for more details.
021
022 You should have received a copy of the GNU Lesser General Public
023 License along with this library; if not, write to the Free Software
024 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
025
026 Contact:
027
028 Andreas Poth
029 lat/lon GmbH
030 Aennchenstr. 19
031 53115 Bonn
032 Germany
033 E-Mail: poth@lat-lon.de
034
035 Prof. Dr. Klaus Greve
036 Department of Geography
037 University of Bonn
038 Meckenheimer Allee 166
039 53115 Bonn
040 Germany
041 E-Mail: greve@giub.uni-bonn.de
042
043
044 ---------------------------------------------------------------------------*/
045 package org.deegree.ogcwebservices.wmps;
046
047 import java.lang.reflect.Constructor;
048
049 import org.deegree.enterprise.Proxy;
050 import org.deegree.framework.log.ILogger;
051 import org.deegree.framework.log.LoggerFactory;
052 import org.deegree.framework.trigger.TriggerProvider;
053 import org.deegree.i18n.Messages;
054 import org.deegree.ogcwebservices.CurrentUpdateSequenceException;
055 import org.deegree.ogcwebservices.InvalidUpdateSequenceException;
056 import org.deegree.ogcwebservices.OGCWebService;
057 import org.deegree.ogcwebservices.OGCWebServiceException;
058 import org.deegree.ogcwebservices.OGCWebServiceRequest;
059 import org.deegree.ogcwebservices.getcapabilities.OGCCapabilities;
060 import org.deegree.ogcwebservices.wmps.configuration.WMPSConfiguration;
061 import org.deegree.ogcwebservices.wmps.configuration.WMPSDeegreeParams;
062 import org.deegree.ogcwebservices.wmps.operation.PrintMap;
063 import org.deegree.ogcwebservices.wmps.operation.WMPSGetCapabilities;
064 import org.deegree.ogcwebservices.wmps.operation.WMPSGetCapabilitiesResult;
065 import org.deegree.ogcwebservices.wmps.operation.WMPSProtocolFactory;
066
067 /**
068 * Handles saving the PrintMap request to the databank and generating the initial response to be
069 * sent to the user.
070 *
071 * @author <a href="mailto:deshmukh@lat-lon.de">Anup Deshmukh</a>
072 * @version 2.0
073 */
074 public class WMPService implements OGCWebService {
075
076 private static final ILogger LOG = LoggerFactory.getLogger( WMPService.class );
077
078 private static final TriggerProvider TP = TriggerProvider.create( WMPService.class );
079
080 private PrintMapHandler printMapHandler;
081
082 private WMPSConfiguration configuration;
083
084 /**
085 * Creates a new WMPService object.
086 *
087 * @param configuration
088 */
089 public WMPService( WMPSConfiguration configuration ) {
090 this.configuration = configuration;
091 this.printMapHandler = new PrintMapHandler( configuration );
092 Proxy proxy = this.configuration.getDeegreeParams().getProxy();
093 if ( proxy != null ) {
094 proxy.setProxy( true );
095 }
096 }
097
098 /**
099 * Return the OGCCapabilities.
100 *
101 * @return OGCCapabilities
102 */
103 public OGCCapabilities getCapabilities() {
104 return this.configuration;
105 }
106
107 /**
108 * the method performs the handling of the passed OGCWebServiceEvent directly and returns the
109 * result to the calling class/method
110 *
111 * @param request
112 * request to perform
113 * @return Object
114 * @throws OGCWebServiceException
115 */
116 public Object doService( OGCWebServiceRequest request )
117 throws OGCWebServiceException {
118
119 request = (OGCWebServiceRequest)TP.doPreTrigger( this, request )[0];
120
121 Object result = null;
122 if ( request instanceof PrintMap ) {
123
124 String template = ( (PrintMap) request ).getTemplate();
125 WMPSDeegreeParams params = this.configuration.getDeegreeParams();
126 boolean isSynchronous = params.getSynchronousTemplates().contains( template );
127
128 String handler = HandlerMapping.getString( "WMPService.PRINTMAP" );
129 RequestManager rqManager = (RequestManager) createHandler( request, PrintMap.class,
130 handler );
131
132 try {
133 rqManager.saveRequestToDB();
134
135 result = rqManager.createInitialResponse( Messages.getMessage( "WMPS_INIT_RESPONSE" ) );
136 } catch ( OGCWebServiceException e ) {
137
138 throw new OGCWebServiceException( "Error saving the PrintMap request "
139 + "to the DB. " + e.getMessage() );
140 }
141
142 try {
143 if ( isSynchronous ) {
144 result = this.printMapHandler.runSynchronous( (PrintMap) request );
145 } else {
146 Thread printMap = new Thread( this.printMapHandler );
147 printMap.start();
148 }
149 } catch ( Exception e ) {
150 LOG.logError( e.getMessage(), e );
151 throw new OGCWebServiceException( "Error performing the PrintMap request. "
152 + e.getMessage() );
153 }
154 } else if ( request instanceof WMPSGetCapabilities ) {
155 result = handleGetCapabilities( (WMPSGetCapabilities) request );
156 }
157
158 return TP.doPostTrigger( this, result )[0];
159 }
160
161 /**
162 * creates a handler class for performing the incomming request. The instance that will be
163 * created depends on the responsible class the for the submitted request in the WMPS
164 * capabilities/configuration.
165 *
166 * @param request
167 * request to be performed
168 * @param requestClass
169 * of the request (GetStyles, WMSFeatureInfoRequest etc.)
170 * @param className
171 * type of the operation to perform by the handler
172 * @return Object
173 * @throws OGCWebServiceException
174 */
175 private Object createHandler( OGCWebServiceRequest request, Class requestClass, String className )
176 throws OGCWebServiceException {
177
178 // describes the signature of the required constructor
179 Class[] cl = new Class[2];
180 cl[0] = WMPSConfiguration.class;
181 cl[1] = requestClass;
182
183 // set parameter to submitt to the constructor
184 Object[] o = new Object[2];
185 o[0] = this.configuration;
186 o[1] = request;
187
188 Object handler = null;
189
190 try {
191 // get constructor
192 Class creator = Class.forName( className );
193 Constructor con = creator.getConstructor( cl );
194 // call constructor and instantiate a new DataStore
195 handler = con.newInstance( o );
196 } catch ( Exception e ) {
197 LOG.logError( e.getMessage(), e );
198 throw new OGCWebServiceException( "Couldn't instantiate " + className + '!' );
199 }
200
201 return handler;
202 }
203
204 /**
205 * reads/creates the capabilities of the WMPS.
206 *
207 * @param request
208 * capabilities request
209 * @return WMPSGetCapabilitiesResult
210 * @throws CurrentUpdateSequenceException
211 * @throws InvalidUpdateSequenceException
212 */
213 private WMPSGetCapabilitiesResult handleGetCapabilities( WMPSGetCapabilities request )
214 throws CurrentUpdateSequenceException, InvalidUpdateSequenceException {
215
216 String rUp = request.getUpdateSequence();
217 String cUp = this.configuration.getUpdateSequence();
218
219 if ( ( rUp != null ) && ( cUp != null ) && ( rUp.compareTo( cUp ) == 0 ) ) {
220 throw new CurrentUpdateSequenceException( "request update sequence: " + rUp
221 + "is equal to capabilities"
222 + " update sequence " + cUp );
223 }
224
225 if ( ( rUp != null ) && ( cUp != null ) && ( rUp.compareTo( cUp ) > 0 ) ) {
226 throw new InvalidUpdateSequenceException( "request update sequence: " + rUp
227 + " is higher then the "
228 + "capabilities update sequence " + cUp );
229 }
230 return WMPSProtocolFactory.createGetCapabilitiesResult( request, null, this.configuration );
231 }
232
233 }
234 /***************************************************************************************************
235 * Changes to this class. What the people have been up to: $Log$
236 * Changes to this class. What the people have been up to: Revision 1.26 2006/10/02 06:30:35 poth
237 * Changes to this class. What the people have been up to: bug fixes
238 * Changes to this class. What the people have been up to:
239 * Revision 1.25 2006/09/13 07:37:58 deshmukh
240 * removed excess debug statements.
241 * Changes to this
242 * class. What the people have been up to: Revision 1.24 2006/08/29 19:54:14 poth Changes to this
243 * class. What the people have been up to: footer corrected Changes to this class. What the people
244 * have been up to: Revision 1.23 2006/08/10
245 * 07:11:35 deshmukh WMPS has been modified
246 * to support the new configuration changes and the excess code not needed has been replaced.
247 * Changes to this class. What the people
248 * have been up to: Revision 1.22 2006/07/31 11:21:07 deshmukh Changes to this class. What the
249 * people have been up to: wmps implemention... Changes to this class. What the people have been up
250 * to: Revision 1.21 2006/07/20 13:24:12
251 * deshmukh Removed a few floating bugs.
252 * Changes to this class. What the people
253 * have been up to: Revision 1.20 2006/06/13 09:30:08 poth Changes to this class. What the people
254 * have been up to: *** empty log message *** Changes to this class. What the people have been up
255 * to: Revision 1.19 2006/06/12 09:34:53
256 * deshmukh extended the print map
257 * capabilites to support the get request and changed the db structure. Changes to this class. What
258 * the people have been up to: Revision 1.18 2006/06/07 12:37:51 deshmukh Reset the changes made to
259 * the WMPS.
260 *
261 * Revision 1.16 2006/05/17 12:21:37 poth not required exceptions removed
262 *
263 * Revision 1.15 2006/05/17 12:18:48 poth not required exceptions removed
264 *
265 * Revision 1.14 2006/05/16 14:55:54 poth alternative synchronous performance of PrintMap requests
266 * implemented
267 *
268 * Revision 1.13 2006/05/16 06:43:12 poth ** empty log message ***
269 *
270 *
271 **************************************************************************************************/