Application: gvSIG desktop

/*

 * Created on 28-abr-2006

 *

 * gvSIG. Sistema de Informaci�n Geogr�fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * 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; either version 2

 * of the License, or (at your option) any later version.

 *

 * 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.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib��ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

*

* $Id: QuadtreeJts.java 11288 2007-04-19 17:32:50Z azabala $

* $Log$

* Revision 1.2  2007-04-19 17:32:50  azabala

* new constructor (fmap spatial index from an existing jts spatial index)

*

* Revision 1.1  2006/05/01 18:38:41  azabala

* primera version en cvs del api de indices espaciales

*

*

*/

package org.gvsig.fmap.dal.index.spatial.jts;

import java.util.List;

import org.gvsig.fmap.dal.feature.exception.FeatureIndexException;

import org.gvsig.fmap.dal.feature.spi.FeatureReferenceProviderServices;

import org.gvsig.fmap.dal.feature.spi.index.AbstractFeatureIndexProvider;

import org.gvsig.fmap.dal.feature.spi.index.FeatureIndexProvider;

import org.gvsig.fmap.geom.Geometry;

import com.vividsolutions.jts.geom.Envelope;

import com.vividsolutions.jts.index.quadtree.Quadtree;

/**

 * Adapter for ISPatialIndex gvSIG's interface to

 * JTS Quadtree.

 *

 *

 * @author azabala

 *

 */

public class JTSQuadtree extends AbstractFeatureIndexProvider implements FeatureIndexProvider {

        public static final String NAME = JTSQuadtree.class.getSimpleName();

        private Quadtree quadtree;

        public JTSQuadtree() {

        }

        public void initialize() {

                quadtree = new Quadtree();

        }

        private Envelope fromEnvelope(org.gvsig.fmap.geom.primitive.Envelope env){

                double[] min = env.getLowerCorner();

                double[] max = env.getUpperCorner();

                Envelope env2 = new Envelope(min[0], max[0], min[1], max[1]);

                return env2;

        }

        public void delete(Object o, FeatureReferenceProviderServices fref) {

                Integer integer=new Integer(((Long)(fref).getOID()).intValue());

                quadtree.remove(

                                fromEnvelope(((Geometry) o).getEnvelope()), integer);

        }

        public void insert(Object o, FeatureReferenceProviderServices fref) {

                Integer integer=new Integer(((Long)(fref).getOID()).intValue());

                quadtree.insert(

                                fromEnvelope(((Geometry) o).getEnvelope()), integer);

        }

        public List match(Object value) throws FeatureIndexException {

                org.gvsig.fmap.geom.primitive.Envelope env = null;

                if (value instanceof org.gvsig.fmap.geom.primitive.Envelope) {

                        env = (org.gvsig.fmap.geom.primitive.Envelope) value;

                } else if (value instanceof Geometry) {

                        env = ((Geometry) value).getEnvelope();

                }

                return new LongList(quadtree.query(fromEnvelope(env)));

        }

        public List match(Object min, Object max) {

                throw new UnsupportedOperationException("Can't perform this kind of search.");

        }

        public List nearest(int count, Object value) throws FeatureIndexException {

                throw new UnsupportedOperationException("Can't perform this kind of search.");

        }

        public boolean isMatchSupported() {

                return true;

        }

        public boolean isNearestSupported() {

                return false;

        }

        public boolean isNearestToleranceSupported() {

                return false;

        }

        public boolean isRangeSupported() {

                return false;

        }

        public List nearest(int count, Object value, double tolerance)

                        throws FeatureIndexException {

                throw new UnsupportedOperationException();

        }

        public List range(Object value1, Object value2)

                        throws FeatureIndexException {

                throw new UnsupportedOperationException();

        }

}