Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2008 {{Company}}   {{Task}}

 */

package org.gvsig.fmap.data.index;

import org.apache.log4j.Logger;

import com.iver.utiles.extensionPoints.ExtensionPoint;

import com.iver.utiles.extensionPoints.ExtensionPointsSingleton;

/**

 * 

 * @author jyarza

 *

 */

public abstract class SpatialIndexFactory {

        private static Logger logger = Logger.getLogger(SpatialIndexFactory.class);

        public interface Factories {

                public static final String GT2_QUADTREE = "QuadTreeGt2Factory";

                public static final String JSI_RTREE = "RTreeJsiFactory";

                public static final String JTS_QUADTREE = "QuadTreeJtsFactory";

                public static final String SPATIALINDEX_RTREE = "RTreeSptLibFactory";

                public static final String DEFAULT = GT2_QUADTREE;

        }

        public static final String EXTENSION_POINT_NAME =  "SpatialIndexFactory";

        private static ExtensionPoint ep = new ExtensionPoint(EXTENSION_POINT_NAME, "Spatial Index Factory");

        static {                

                ExtensionPointsSingleton.getInstance().put(ep);

                logger.debug("factory static code executed");

        }

        public static SpatialIndexFactory getFactory(String type) throws InstantiationException, IllegalAccessException {

                if (type == null) type = Factories.DEFAULT;

                return (SpatialIndexFactory) ep.create(type);

        }

        protected static void registerFactory(String key, String description, Class value) {

                ep.put(key, description, value);

                logger.debug(key + " registered.");

        }

        public SpatialIndex createSpatialIndex() throws IndexException {

                return createSpatialIndex(null);

        }        

        public abstract SpatialIndex createSpatialIndex(SpatialIndexParameters params) throws IndexException;

}