//$Header: /home/deegree/jail/deegreerepository/deegree/src/org/deegree/io/datastore/RequestCRSTransformationTrigger.java,v 1.4 2006/11/27 09:07:53 poth Exp $
/*---------------- 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
53177 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.io.datastore;
import org.deegree.datatypes.QualifiedName;
import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;
import org.deegree.framework.trigger.Trigger;
import org.deegree.framework.trigger.TriggerException;
import org.deegree.io.datastore.schema.MappedFeatureType;
import org.deegree.model.crs.CRSTransformationException;
import org.deegree.model.crs.CoordinateSystem;
import org.deegree.model.crs.GeoTransformer;
import org.deegree.model.crs.IGeoTransformer;
import org.deegree.model.filterencoding.ComplexFilter;
import org.deegree.model.filterencoding.Filter;
import org.deegree.model.filterencoding.FilterTools;
import org.deegree.model.filterencoding.SpatialOperation;
import org.deegree.model.spatialschema.GeometryException;
import org.deegree.ogcwebservices.wfs.operation.Query;
/**
* Trigger implementation for transformation of geometries being
* part of a WFS request into the CRS of the comparsion geometries
* at the physical datasource.
* <br>
* At th moment just support for GetFeature is implemented
* TODO
* support for update and delete requests
*
* @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
* @author last edited by: $Author: poth $
*
* @version $Revision: 1.4 $, $Date: 2006/11/27 09:07:53 $
*/
public class RequestCRSTransformationTrigger implements Trigger {
private static final ILogger LOG = LoggerFactory.getLogger( RequestCRSTransformationTrigger.class );
private String name;
/**
* @param caller calling instance
* @param values parameter values passed from the caller. Because
* RequestCRSTransformationTrigger is intented to be used as a
* preTrigger this will be all parameters passed to the calling
* method
*/
public Object[] doTrigger( Object caller, Object... values ) {
Datastore ds = (Datastore) caller;
Query query = (Query) values[0];
Filter filter = query.getFilter();
if ( filter instanceof ComplexFilter ) {
// transformations are just required if a filter is complex
// because FeatureID filters does not contain spatial operations
ComplexFilter cFilter = (ComplexFilter) filter;
SpatialOperation[] so = FilterTools.extractSpatialFilter( cFilter );
QualifiedName[] qns = query.getTypeNames();
IGeoTransformer gt = null;
for ( int i = 0; i < qns.length; i++ ) {
MappedFeatureType mft = ( (Datastore) caller ).getFeatureType( qns[i] );
CoordinateSystem targetCRS = mft.getGMLSchema().getDefaultCS();
for ( int j = 0; j < so.length; j++ ) {
CoordinateSystem sourceCRS = so[i].getGeometry().getCoordinateSystem();
if ( sourceCRS != null && !targetCRS.equals( sourceCRS ) ) {
try {
if ( gt == null ) {
gt = new GeoTransformer( targetCRS );
}
so[j].setGeometry( gt.transform( so[i].getGeometry() ) );
} catch ( CRSTransformationException e ) {
LOG.logError( e.getMessage(), e );
throw new TriggerException( e );
}
}
}
}
}
return values;
}
public String getName() {
return name;
}
public void setName( String name ) {
this.name = name;
}
/**
* Returns a string representation of the object.
*
* @return a string representation of the object
*/
@Override
public String toString() {
return "Trigger name: " + name;
}
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: RequestCRSTransformationTrigger.java,v $
Revision 1.4 2006/11/27 09:07:53 poth
JNI integration of proj4 has been removed. The CRS functionality now will be done by native deegree code.
Revision 1.3 2006/11/09 17:37:01 mschneider
Fixed formatting.
Revision 1.2 2006/09/28 09:46:01 poth
implementation completed
Revision 1.1 2006/09/27 20:08:17 poth
first check in
********************************************************************** */