001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/tags/2.1/src/org/deegree/portal/portlet/enterprise/WMCUpdateServlet.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001-2007 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 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 package org.deegree.portal.portlet.enterprise;
044
045 import java.io.IOException;
046 import java.util.List;
047 import java.util.Map;
048
049 import javax.servlet.ServletException;
050 import javax.servlet.http.HttpServlet;
051 import javax.servlet.http.HttpServletRequest;
052 import javax.servlet.http.HttpServletResponse;
053
054 import org.deegree.framework.log.ILogger;
055 import org.deegree.framework.log.LoggerFactory;
056 import org.deegree.framework.util.KVP2Map;
057 import org.deegree.framework.util.StringTools;
058 import org.deegree.model.crs.CoordinateSystem;
059 import org.deegree.model.spatialschema.Envelope;
060 import org.deegree.model.spatialschema.GeometryFactory;
061 import org.deegree.model.spatialschema.Point;
062 import org.deegree.portal.context.ContextException;
063 import org.deegree.portal.context.Layer;
064 import org.deegree.portal.context.ViewContext;
065 import org.deegree.portal.portlet.modules.actions.IGeoPortalPortletPerform;
066
067 /**
068 * The servlet will be used to update a map model (Web Map Context) in the background (using an
069 * invisible iframe) from an iGeoPortal Portlet Edition
070 *
071 *
072 * @version $Revision: 7717 $
073 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
074 * @author last edited by: $Author: apoth $
075 *
076 * @version 1.0. $Revision: 7717 $, $Date: 2007-07-04 10:35:31 +0200 (Mi, 04 Jul 2007) $
077 *
078 * @since 2.0
079 */
080 public class WMCUpdateServlet extends HttpServlet {
081
082 private static final long serialVersionUID = 2927537039728672671L;
083
084 private static final ILogger LOG = LoggerFactory.getLogger( WMCUpdateServlet.class );
085
086 @Override
087 public void init()
088 throws ServletException {
089 super.init();
090 }
091
092 @Override
093 protected void doGet( HttpServletRequest request, HttpServletResponse response )
094 throws ServletException, IOException {
095
096 doPost( request, response );
097 }
098
099 @Override
100 protected void doPost( HttpServletRequest request, HttpServletResponse response )
101 throws ServletException, IOException {
102
103 Map parameter = KVP2Map.toMap( request );
104
105 String mm = (String) parameter.get( "MAPPORTLET" );
106 LOG.logDebug( "parameter: " + parameter );
107 IGeoPortalPortletPerform igeo = new IGeoPortalPortletPerform( request, null, getServletContext() );
108 try {
109 if ( mm != null ) {
110 // update bbox
111 ViewContext vc = igeo.getCurrentViewContext( mm );
112
113 String bbox = (String) parameter.get( IGeoPortalPortletPerform.PARAM_BBOX );
114 if ( bbox != null && vc != null ) {
115 double[] coords = StringTools.toArrayDouble( bbox, "," );
116 CoordinateSystem crs = vc.getGeneral().getBoundingBox()[0].getCoordinateSystem();
117 Point[] pt = new Point[2];
118 pt[0] = GeometryFactory.createPoint( coords[0], coords[1], crs );
119 pt[1] = GeometryFactory.createPoint( coords[2], coords[3], crs );
120 try {
121 vc.getGeneral().setBoundingBox( pt );
122 } catch ( ContextException should_never_happen ) {
123 }
124 List<Envelope> history = (List<Envelope>) request.getSession().getAttribute(
125 IGeoPortalPortletPerform.SESSION_HISTORY );
126 int p = (Integer) request.getSession().getAttribute(
127 IGeoPortalPortletPerform.SESSION_HISTORYPOSITION );
128 Envelope current = history.get( p );
129 Envelope env = GeometryFactory.createEnvelope( coords[0], coords[1], coords[2], coords[3], null );
130 if ( current == null || !current.equals( env ) ) {
131 p++;
132 history.add( p, env );
133 request.getSession().setAttribute( IGeoPortalPortletPerform.SESSION_HISTORYPOSITION, p );
134 }
135 }
136
137 if ( bbox != null && parameter.get( "LAYERS" ) != null ) {
138 // just change layerlist if the request contains a BBOX parameter
139 // and at least one layer because other wise it will be the initial call;
140 Layer[] layers = vc.getLayerList().getLayers();
141 String ly = (String) parameter.get( "LAYERS" );
142 StringBuffer sb = new StringBuffer( 100 );
143 for ( int i = 0; i < layers.length; i++ ) {
144 sb.append( layers[i].getName() ).append( '|' );
145 sb.append( layers[i].getServer().getOnlineResource() );
146 if ( ly.indexOf( sb.toString() ) > -1 ) {
147 layers[i].setHidden( false );
148 } else {
149 layers[i].setHidden( true );
150 }
151 sb.delete( 0, sb.length() );
152 }
153 igeo.setCurrentMapContext( vc, mm );
154 }
155 } else {
156 System.out.println( "no mapmodel defined in request; ensure that parameter 'MAPPORTLET' is defined!" );
157 }
158 } catch ( Exception e ) {
159 e.printStackTrace();
160 LOG.logError( "could not update WMC: " + e.getMessage(), e );
161 }
162 request.setAttribute( "ACTION", getInitParameter( "ACTION" ) );
163
164 request.getRequestDispatcher( "igeoportal/enterprise.jsp" ).forward( request, response );
165 }
166
167 }