//$Header$
/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53115 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.portal.portlet.modules.map.actions.portlets;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import org.apache.jetspeed.portal.Portlet;
import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;
import org.deegree.framework.util.StringTools;
import org.deegree.model.crs.CoordinateSystem;
import org.deegree.model.spatialschema.GeometryFactory;
import org.deegree.model.spatialschema.Point;
import org.deegree.ogcwebservices.OGCWebServiceException;
import org.deegree.portal.PortalException;
import org.deegree.portal.context.ContextException;
import org.deegree.portal.context.ViewContext;
/**
*
*
* @version $Revision$
* @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
* @author last edited by: $Author$
*
* @version 1.0. $Revision$, $Date$
*
* @since 2.0
*/
public abstract class FeatureInfoForwardPortletPerform extends FeatureInfoPortletPerform {
private static final ILogger LOG = LoggerFactory.getLogger( FeatureInfoForwardPortletPerform.class );
/**
* @param request
* @param portlet
*/
public FeatureInfoForwardPortletPerform(HttpServletRequest request, Portlet portlet,
ServletContext servletContext) {
super( request, portlet, servletContext );
}
/**
*
* @return
*/
protected void doGetFeatureInfo() throws PortalException, OGCWebServiceException {
// a get feature info request only can be performed if a viewcontext
// has been initialized before by the MapWindowPortletAction
ViewContext vc = getCurrentViewContext( portlet.getID() );
if ( vc == null ) {
throw new PortalException( "no valid view context available through users session" );
}
String reqlayer = (String)parameter.get( PARAM_FILAYERS );
if ( reqlayer == null || reqlayer.length() == 0 ) {
throw new PortalException( "at least one layer/featuretype/coverage must be " +
"targeted by a feature info request" );
}
// update the view contexts bounding box with the current one. This information
// will be evaluated when creating a GetFeatureInfo request later
String tmp = (String)parameter.get( PARAM_BBOX );
if ( tmp == null || tmp.length() == 0 ) {
throw new PortalException( "required parameter " + PARAM_BBOX + " is missing!" );
}
double[] coords = StringTools.toArrayDouble( tmp, "," );
CoordinateSystem crs = vc.getGeneral().getBoundingBox()[0].getCoordinateSystem();
Point[] pt = new Point[2];
pt[0] = GeometryFactory.createPoint( coords[0], coords[1], crs );
pt[1] = GeometryFactory.createPoint( coords[2], coords[3], crs );
try {
vc.getGeneral().setBoundingBox( pt );
} catch ( ContextException e ) {
LOG.logError( e.getMessage(), e );
throw new PortalException( "could not update viewcontexts bbox", e );
}
List layerList = new ArrayList(50);
layerList.add( vc.getLayerList().getLayer( reqlayer ) );
tmp = perform( layerList, vc ).trim();
String[] ids = StringTools.toArray( tmp, ";", true );
List list = performQuery( ids );
request.setAttribute( "RESULT", list );
}
/**
* the IDs of the features targeted by a GetFeatureInfo request will
* be passed. A concret implementation of this method may use them to
* perform a database query, a GetFeature request or something else.
*
* @param ids
* @return
*/
protected abstract List performQuery(String[] ids);
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log$
Revision 1.8 2006/10/12 15:46:19 poth
adaption required to avoid allocating larger amounts of memory for each user session when using several WMC documents
Revision 1.7 2006/08/29 19:54:13 poth
footer corrected
Revision 1.6 2006/06/07 12:19:38 poth
*** empty log message ***
Revision 1.5 2006/05/01 20:15:27 poth
*** empty log message ***
Revision 1.4 2006/04/06 20:25:21 poth
*** empty log message ***
Revision 1.3 2006/03/30 21:20:23 poth
*** empty log message ***
Revision 1.2 2006/03/22 13:22:14 poth
*** empty log message ***
Revision 1.1 2006/02/05 09:30:11 poth
*** empty log message ***
Revision 1.3 2005/10/05 20:45:11 ap
*** empty log message ***
Revision 1.2 2005/09/16 09:38:18 ap
*** empty log message ***
Revision 1.1 2005/09/16 07:06:30 ap
*** empty log message ***
Revision 1.1 2005/09/15 09:45:48 ap
*** empty log message ***
********************************************************************** */