001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/branches/2.2_testing/src/org/deegree/portal/standard/wms/control/MapRequestDispatcher.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 Aennchenstr. 19
030 53115 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
045 package org.deegree.portal.standard.wms.control;
046
047 import java.io.File;
048 import java.io.IOException;
049
050 import javax.servlet.ServletConfig;
051 import javax.servlet.ServletException;
052 import javax.servlet.http.HttpServletRequest;
053 import javax.servlet.http.HttpServletResponse;
054 import javax.servlet.http.HttpSession;
055
056 import org.deegree.portal.context.ViewContext;
057 import org.deegree.portal.context.WebMapContextFactory;
058 import org.deegree.portal.standard.wms.Constants;
059
060 /**
061 * This is a <code>RequestDispatcher</code> which creates a event out of
062 * a GET or POST requests.<P>
063 *
064 * Furthermore this class implements
065 *
066 * <HR>
067 * <B>Design Patterns:</B>:<BR>
068 *
069 * The following Design Patterns are used:
070 * <UL>
071 * <LI> Proxy
072 * </UL>
073 *
074 * @author <a href="mailto:friebe@gmx.net">Torsten Friebe</a>
075 *
076 * @version $Revision: 9346 $ $Date: 2007-12-27 17:39:07 +0100 (Do, 27 Dez 2007) $
077 *
078 */
079 public class MapRequestDispatcher extends org.deegree.enterprise.control.RequestDispatcher {
080
081 private ViewContext vc = null;
082
083 /**
084 * This method initializes the servlet.
085 *
086 * @param cfg the servlet configuration
087 *
088 * @throws ServletException an exception
089 */
090 public void init( ServletConfig cfg ) throws ServletException {
091 super.init( cfg );
092
093 String controllerFile = getInitParameter( "Handler.configFile" );
094 if ( ! ( new File( controllerFile ).exists() ) ) {
095 controllerFile = getServletContext().getRealPath( controllerFile );
096 }
097 String clientContext = this.getInitParameter( "MapContext.configFile" );
098 if ( ! ( new File( clientContext ).exists() ) ) {
099 clientContext = getServletContext().getRealPath( clientContext );
100 try {
101 File file = new File( clientContext );
102 vc = WebMapContextFactory.createViewContext( file.toURL(), null, null );
103 appHandler = new MapApplicationHandler( controllerFile, vc );
104 } catch(Exception e) {
105 e.printStackTrace();
106 }
107 }
108 }
109
110 /**
111 *
112 *
113 * @param request
114 * @param response
115 *
116 * @throws ServletException
117 * @throws IOException
118 */
119 protected void service( HttpServletRequest request, HttpServletResponse response )
120 throws ServletException, IOException {
121
122 HttpSession session = request.getSession( true );
123 session.setAttribute( Constants.DEFAULTMAPCONTEXT , vc );
124 super.service( request, response );
125 }
126
127
128 }