DB2SpatialFiltersTest.java example

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/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 *
 *    (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General 
 *    License as published by the Free Software Foundation;
 *    version 2.1 of the License.
 *
 *    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  License for more details.
 */
package org.geotools.data.db2;

import org.geotools.data.Query;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.factory.CommonFactoryFinder;
import org.geotools.jdbc.JDBCDataStoreAPITestSetup;
import org.geotools.jdbc.JDBCSpatialFiltersTest;
import org.opengis.filter.FilterFactory2;
import org.opengis.filter.expression.Literal;
import org.opengis.filter.expression.PropertyName;
import org.opengis.filter.spatial.DWithin;

import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.GeometryCollection;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.geom.MultiLineString;
import com.vividsolutions.jts.geom.PrecisionModel;

/**
 * 
 *
 * @source $URL$
 */
public class DB2SpatialFiltersTest extends JDBCSpatialFiltersTest {

    @Override
    protected JDBCDataStoreAPITestSetup createTestSetup() {
        return new DB2DataStoreAPITestSetup();
    }

	@Override
	protected void connect() throws Exception {
		super.connect();
		dataStore.setDatabaseSchema("geotools");
	}
	
	public void testGeometryCollection() throws Exception{
	        PrecisionModel precisionModel = new PrecisionModel();
	      	        
	        int SRID = 4326;
	        GeometryFactory gf = new GeometryFactory(precisionModel, SRID);
	        Coordinate[] points = { new Coordinate(30, 40), new Coordinate(50, 60) };
	        LineString[] geometries = new LineString[2];
	        geometries [0] = gf.createLineString(points);
	        Coordinate[] points2 = { new Coordinate(40, 30), new Coordinate(70, 40) };
	        geometries[1] = gf.createLineString(points2);
	        
	        // TODO, DB2 does not support instantiating a geometry collection from wkb, 
	        // wkb type 7, replace GeometryCollection with MultiLineString	        
	        // code in superclass: GeometryCollection geometry = new GeometryCollection(geometries, factory );
	        // For DB2, we must use the following line of code
	        MultiLineString ml = gf.createMultiLineString(geometries);
	        
	        FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2(null);
	        
	        PropertyName p = ff.property(aname("geom"));        
	        Literal collect = ff.literal(ml);
	      
	        DWithin dwithinGeomCo  = ((FilterFactory2) ff).dwithin(p, collect, 5, "meter");
	        Query dq = new Query(tname("road"), dwithinGeomCo);
	        SimpleFeatureCollection features = dataStore.getFeatureSource(tname("road")).getFeatures(dq);
	        assertEquals(0, features.size());
      }
	

}