001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/enterprise/servlet/WMPSHandler.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2008 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/deegree/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 This library is free software; you can redistribute it and/or
012 modify it under the terms of the GNU Lesser General Public
013 License as published by the Free Software Foundation; either
014 version 2.1 of the License, or (at your option) any later version.
015
016 This library is distributed in the hope that it will be useful,
017 but WITHOUT ANY WARRANTY; without even the implied warranty of
018 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
019 Lesser General Public License for more details.
020
021 You should have received a copy of the GNU Lesser General Public
022 License along with this library; if not, write to the Free Software
023 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
024
025 Contact:
026
027 Andreas Poth
028 lat/lon GmbH
029 Aennchenstraße 19
030 53177 Bonn
031 Germany
032 E-Mail: poth@lat-lon.de
033
034 Prof. Dr. Klaus Greve
035 Department of Geography
036 University of Bonn
037 Meckenheimer Allee 166
038 53115 Bonn
039 Germany
040 E-Mail: greve@giub.uni-bonn.de
041
042 ---------------------------------------------------------------------------*/
043
044 package org.deegree.enterprise.servlet;
045
046 import java.io.PrintWriter;
047
048 import javax.servlet.http.HttpServletResponse;
049
050 import org.deegree.framework.log.ILogger;
051 import org.deegree.framework.log.LoggerFactory;
052 import org.deegree.framework.util.NetWorker;
053 import org.deegree.framework.util.StringTools;
054 import org.deegree.framework.xml.DOMPrinter;
055 import org.deegree.framework.xml.XMLFragment;
056 import org.deegree.ogcwebservices.OGCWebService;
057 import org.deegree.ogcwebservices.OGCWebServiceException;
058 import org.deegree.ogcwebservices.OGCWebServiceRequest;
059 import org.deegree.ogcwebservices.OGCWebServiceResponse;
060 import org.deegree.ogcwebservices.wmps.WMPService;
061 import org.deegree.ogcwebservices.wmps.WMPServiceFactory;
062 import org.deegree.ogcwebservices.wmps.XMLFactory;
063 import org.deegree.ogcwebservices.wmps.capabilities.WMPSCapabilities;
064 import org.deegree.ogcwebservices.wmps.capabilities.WMPSCapabilitiesDocument;
065 import org.deegree.ogcwebservices.wmps.configuration.WMPSConfiguration;
066 import org.deegree.ogcwebservices.wmps.operation.PrintMapResponseDocument;
067 import org.deegree.ogcwebservices.wmps.operation.WMPSGetCapabilitiesResult;
068 import org.deegree.ogcwebservices.wms.InvalidFormatException;
069
070 /**
071 *
072 * Web servlet client for WMPS.
073 *
074 * @author <a href="mailto:deshmukh@lat-lon.de">Anup Deshmukh</a>
075 *
076 * @author last edited by: $Author: apoth $
077 *
078 * @version 2.0, $Revision: 9348 $, $Date: 2007-12-27 17:59:14 +0100 (Do, 27 Dez 2007) $
079 *
080 * @since 2.0
081 */
082
083 public class WMPSHandler extends AbstractOWServiceHandler {
084
085 private static ILogger LOG = LoggerFactory.getLogger( WMPSHandler.class );
086
087 private HttpServletResponse resp = null;
088
089 private WMPSConfiguration configuration = null;
090
091 WMPSHandler() {
092 LOG.logDebug( "New WMPSHandler instance created: "
093 + this.getClass().getName() );
094 }
095
096 /**
097 * performs the passed OGCWebServiceRequest by accessing service from the pool and passing the
098 * request to it
099 */
100 public void perform( OGCWebServiceRequest request, HttpServletResponse response )
101 throws OGCWebServiceException {
102
103 resp = response;
104 OGCWebService service;
105 try {
106 service = WMPServiceFactory.getService();
107 } catch (Exception e) {
108 throw new OGCWebServiceException( "Error performing the WMPService(s)." );
109 }
110 configuration = (WMPSConfiguration) ( (WMPService) service ).getCapabilities();
111 if ( service == null ) {
112 OGCWebServiceException exce =
113 new OGCWebServiceException( "WMPS:WMPS", "could not access a WMPService instance" );
114 sendException( response, exce );
115 return;
116 }
117 Object o = service.doService( request );
118 handleResponse( o );
119 }
120
121 /**
122 *
123 *
124 * @param result
125 */
126 private void handleResponse( Object result ) {
127
128
129 try {
130 OGCWebServiceResponse response = (OGCWebServiceResponse) result;
131 if ( response.getException() != null ) {
132 // handle the case that an exception occured during the
133 // request performance
134 OGCWebServiceException exce = response.getException();
135 sendException( resp, exce );
136 } else {
137 if ( response instanceof WMPSGetCapabilitiesResult ) {
138 handleGetCapabilitiesResponse( (WMPSGetCapabilitiesResult) response );
139 } else if ( response instanceof PrintMapResponseDocument ) {
140 handlePrintMapResponse( (PrintMapResponseDocument) response );
141 }
142 }
143 } catch (InvalidFormatException ife) {
144 LOG.logError( ife.getMessage(), ife );
145 OGCWebServiceException exce =
146 new OGCWebServiceException( "InvalidFormat", ife.getMessage() );
147 sendException( resp, exce );
148 } catch (Exception e) {
149 LOG.logError( e.getMessage(), e );
150 OGCWebServiceException exce = new OGCWebServiceException( "WMPS:write",e.getMessage() );
151 sendException( resp, exce );
152 }
153
154
155 }
156
157 /**
158 * handles the response to a get capabilities request
159 *
160 * @param response
161 */
162 private void handleGetCapabilitiesResponse( WMPSGetCapabilitiesResult response )
163 throws Exception {
164
165 resp.setContentType( "application/vnd.ogc.wms_xml" );
166 WMPSCapabilities capa = response.getCapabilities();
167 WMPSCapabilitiesDocument doc = XMLFactory.export( capa );
168
169 // XMLFragment frag = doc.transform( url.openStream() , XMLFragment.DEFAULT_URL );
170 String xml = DOMPrinter.nodeToString( doc.getRootElement(), "" );
171
172 String dtd = NetWorker.url2String( configuration.getDeegreeParams().getDTDLocation() );
173 StringBuffer sb = new StringBuffer();
174 sb.append( "<!DOCTYPE WMT_PS_Capabilities SYSTEM " );
175 sb.append( "'"
176 + dtd + "' \n" );
177 sb.append( "[\n<!ELEMENT VendorSpecificCapabilities EMPTY>\n]>" );
178
179 xml = StringTools.replace( xml, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>",
180 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
181 + "\n" + sb.toString(), false );
182 xml = StringTools.replace( xml, "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"",
183 "", false );
184
185 try {
186 PrintWriter pw = resp.getWriter();
187 pw.print( xml );
188 pw.close();
189 } catch (Exception e) {
190 LOG.logError( "-", e );
191 }
192
193
194 }
195
196 /**
197 * handles the response to a print map request
198 *
199 * @param response
200 */
201 private void handlePrintMapResponse( PrintMapResponseDocument response ) {
202
203 resp.setContentType( "application/vnd.ogc.wms_xml" );
204
205 XMLFragment xml = new XMLFragment( response.getRootElement() );
206 try {
207 PrintWriter pw = resp.getWriter();
208 //pw.append( "id=");
209 //pw.append( response.getRootElement().getAttribute( "id" ) );
210 xml.prettyPrint( pw );
211 pw.close();
212 } catch (Exception e) {
213 LOG.logError( "-", e );
214 }
215
216
217
218 }
219
220
221 }