/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on March 02, 2016
*/
package com.bigdata.rdf.sparql.ast.eval.service;
import org.openrdf.model.impl.URIImpl;
import com.bigdata.rdf.internal.IV;
import com.bigdata.rdf.model.BigdataValueFactory;
import com.bigdata.rdf.sparql.ast.DummyConstantNode;
import com.bigdata.service.geospatial.GeoSpatialDefaultLiteralSerializer;
import com.bigdata.service.geospatial.GeoSpatialSearchException;
/**
* Test serializer for WKT literals of the form Point(lat,lon).
* Note that this is a dummy implementation for tests only,
* assuming there are no whitespaces contained in the literal, etc.
*
* @author msc
*/
public class GeoSpatialTestWKTLiteralSerializer extends GeoSpatialDefaultLiteralSerializer {
@Override
public String[] toComponents(String literalString) {
if (literalString==null) {
return new String[0];
}
final String core = literalString.substring(6,literalString.length()-1);
return core.split(",");
}
@Override
public String fromComponents(Object[] components) {
if (components==null)
return "";
if (components.length!=2)
throw new GeoSpatialSearchException(
"Expected component string of lenth 2, but was " + components.length);
final StringBuffer buf = new StringBuffer();
buf.append("Point(");
buf.append(components[0]);
buf.append(",");
buf.append(components[1]);
buf.append(")");
return buf.toString();
}
@Override
public IV<?,?> serializeLocation(
final BigdataValueFactory vf, final Object latitude, final Object longitude) {
final StringBuffer buf = new StringBuffer();
buf.append("Point(");
buf.append(latitude);
buf.append(",");
buf.append(longitude);
buf.append(")");
return DummyConstantNode.toDummyIV(
vf.createLiteral(
buf.toString(),
new URIImpl("http://www.opengis.net/ont/geosparql#wktLiteral")));
}
}