001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/enterprise/servlet/WMPSHandler.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.enterprise.servlet;
038
039 import java.io.PrintWriter;
040
041 import javax.servlet.http.HttpServletResponse;
042
043 import org.deegree.framework.log.ILogger;
044 import org.deegree.framework.log.LoggerFactory;
045 import org.deegree.framework.util.NetWorker;
046 import org.deegree.framework.util.StringTools;
047 import org.deegree.framework.xml.DOMPrinter;
048 import org.deegree.framework.xml.XMLFragment;
049 import org.deegree.ogcwebservices.OGCWebService;
050 import org.deegree.ogcwebservices.OGCWebServiceException;
051 import org.deegree.ogcwebservices.OGCWebServiceRequest;
052 import org.deegree.ogcwebservices.OGCWebServiceResponse;
053 import org.deegree.ogcwebservices.wmps.WMPService;
054 import org.deegree.ogcwebservices.wmps.WMPServiceFactory;
055 import org.deegree.ogcwebservices.wmps.XMLFactory;
056 import org.deegree.ogcwebservices.wmps.capabilities.WMPSCapabilities;
057 import org.deegree.ogcwebservices.wmps.capabilities.WMPSCapabilitiesDocument;
058 import org.deegree.ogcwebservices.wmps.configuration.WMPSConfiguration;
059 import org.deegree.ogcwebservices.wmps.operation.PrintMapResponseDocument;
060 import org.deegree.ogcwebservices.wmps.operation.WMPSGetCapabilitiesResult;
061 import org.deegree.ogcwebservices.wms.InvalidFormatException;
062
063 /**
064 *
065 * Web servlet client for WMPS.
066 *
067 * @author <a href="mailto:deshmukh@lat-lon.de">Anup Deshmukh</a>
068 *
069 * @author last edited by: $Author: mschneider $
070 *
071 * @version 2.0, $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
072 *
073 * @since 2.0
074 */
075
076 public class WMPSHandler extends AbstractOWServiceHandler {
077
078 private static ILogger LOG = LoggerFactory.getLogger( WMPSHandler.class );
079
080 private HttpServletResponse resp = null;
081
082 private WMPSConfiguration configuration = null;
083
084 /**
085 * Create an empty WMPSHandler
086 */
087 WMPSHandler() {
088 LOG.logDebug( "New WMPSHandler instance created: " + this.getClass().getName() );
089 }
090
091 /**
092 * performs the passed OGCWebServiceRequest by accessing service from the pool and passing the
093 * request to it
094 */
095 public void perform( OGCWebServiceRequest request, HttpServletResponse response )
096 throws OGCWebServiceException {
097
098 resp = response;
099 OGCWebService service;
100 try {
101 service = WMPServiceFactory.getService();
102 } catch ( Exception e ) {
103 throw new OGCWebServiceException( "Error performing the WMPService(s)." );
104 }
105 configuration = (WMPSConfiguration) ( (WMPService) service ).getCapabilities();
106 // if ( service == null ) {
107 // OGCWebServiceException exce = new OGCWebServiceException( "WMPS:WMPS",
108 // "could not access a WMPService instance" );
109 // sendException( response, exce );
110 // return;
111 // }
112 Object o = service.doService( request );
113 handleResponse( o );
114 }
115
116 /**
117 *
118 *
119 * @param result
120 */
121 private void handleResponse( Object result ) {
122
123 try {
124 OGCWebServiceResponse response = (OGCWebServiceResponse) result;
125 if ( response.getException() != null ) {
126 // handle the case that an exception occured during the
127 // request performance
128 OGCWebServiceException exce = response.getException();
129 sendException( resp, exce );
130 } else {
131 if ( response instanceof WMPSGetCapabilitiesResult ) {
132 handleGetCapabilitiesResponse( (WMPSGetCapabilitiesResult) response );
133 } else if ( response instanceof PrintMapResponseDocument ) {
134 handlePrintMapResponse( (PrintMapResponseDocument) response );
135 }
136 }
137 } catch ( InvalidFormatException ife ) {
138 LOG.logError( ife.getMessage(), ife );
139 OGCWebServiceException exce = new OGCWebServiceException( "InvalidFormat", ife.getMessage() );
140 sendException( resp, exce );
141 } catch ( Exception e ) {
142 LOG.logError( e.getMessage(), e );
143 OGCWebServiceException exce = new OGCWebServiceException( "WMPS:write", e.getMessage() );
144 sendException( resp, exce );
145 }
146
147 }
148
149 /**
150 * handles the response to a get capabilities request
151 *
152 * @param response
153 */
154 private void handleGetCapabilitiesResponse( WMPSGetCapabilitiesResult response )
155 throws Exception {
156
157 resp.setContentType( "application/vnd.ogc.wms_xml" );
158 WMPSCapabilities capa = response.getCapabilities();
159 WMPSCapabilitiesDocument doc = XMLFactory.export( capa );
160
161 // XMLFragment frag = doc.transform( url.openStream() , XMLFragment.DEFAULT_URL );
162 String xml = DOMPrinter.nodeToString( doc.getRootElement(), "" );
163
164 String dtd = NetWorker.url2String( configuration.getDeegreeParams().getDTDLocation() );
165 StringBuffer sb = new StringBuffer();
166 sb.append( "<!DOCTYPE WMT_PS_Capabilities SYSTEM " );
167 sb.append( "'" + dtd + "' \n" );
168 sb.append( "[\n<!ELEMENT VendorSpecificCapabilities EMPTY>\n]>" );
169
170 xml = StringTools.replace( xml, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>",
171 "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" + "\n" + sb.toString(), false );
172 xml = StringTools.replace( xml, "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"", "", false );
173
174 try {
175 PrintWriter pw = resp.getWriter();
176 pw.print( xml );
177 pw.close();
178 } catch ( Exception e ) {
179 LOG.logError( "-", e );
180 }
181
182 }
183
184 /**
185 * handles the response to a print map request
186 *
187 * @param response
188 */
189 private void handlePrintMapResponse( PrintMapResponseDocument response ) {
190
191 resp.setContentType( "application/vnd.ogc.wms_xml" );
192
193 XMLFragment xml = new XMLFragment( response.getRootElement() );
194 try {
195 PrintWriter pw = resp.getWriter();
196 // pw.append( "id=");
197 // pw.append( response.getRootElement().getAttribute( "id" ) );
198 xml.prettyPrint( pw );
199 pw.close();
200 } catch ( Exception e ) {
201 LOG.logError( "-", e );
202 }
203
204 }
205
206 }