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 }