/**
* Copyright (c) 2013, Institute of Information Systems (Sven Groppe and contributors of LUPOSDATE), University of Luebeck
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this list of conditions and the following
* disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* - Neither the name of the University of Luebeck nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package lupos.geo.geosparql.functions;
import com.vividsolutions.jts.geom.Geometry;
import lupos.datastructures.items.literal.LiteralFactory;
import lupos.engine.operators.singleinput.filter.expressionevaluation.EvaluationVisitorImplementation;
import lupos.engine.operators.singleinput.filter.expressionevaluation.ExternalFunction;
import lupos.engine.operators.singleinput.TypeErrorException;
import lupos.geo.GeoHelper;
/**
* Richard Mietz
* Date: 20.02.13
*/
public class GeofGetSRID implements ExternalFunction
{
@Override
public Object evaluate(Object[] args) throws TypeErrorException
{
if(args.length==1){
Geometry geo = GeoHelper.getGeoSPARQLGeometry(args[0]);
int srid = geo.getSRID();
//TODO GeoSPARQL Req 20: Implementations shall support geof:getSRID as a SPARQL extension function. At the moment only return int instead of an SRID-URI
return new Integer(srid);
}
else
{
throw new TypeErrorException("getSRID Function expects exactly 1 arguments: a geometry object");
}
}
public static void register(){
EvaluationVisitorImplementation.registerExternalFunction(LiteralFactory.createURILiteralWithoutLazyLiteralWithoutException("<" + GeoHelper.geoSPARQLFunctionUri + "getSRID>"), new GeofGetSRID());
}
}