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.spatial.gt2;

import java.io.File;

import java.io.IOException;

import org.gvsig.fmap.data.index.Index;

import org.gvsig.fmap.data.index.IndexException;

import org.gvsig.fmap.data.index.IndexFactory;

import org.gvsig.fmap.data.index.IndexParameters;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.tools.exception.BaseException;

public class QuadTreeGt2Factory extends IndexFactory {

        static {

                registerFactory(Factories.TYPE_GEOMETRY.GT2_QUADTREE, "QuadTreeGt2Factory", QuadTreeGt2Factory.class);

        }

        public Index createIndex(IndexParameters params) throws IndexException {

                if (params == null) throw new IllegalArgumentException("IndexParameters cannot be null.");

                if (params.getFeatureStore() == null) throw new IllegalArgumentException("FeatureStore cannot be null.");

                if (params.getFeatureType() == null) throw new IllegalArgumentException("FeatureType cannot be null.");

                Index index = null;

                try {

                        File file = null;

                        if (params.getName() == null) {

                                file = File.createTempFile(params.getFeatureStore().getName(), ".qix");

                        } else {

                                file = new File(params.getFeatureStore().getName() + "-" + params.getName() + ".qix");

                        }

                        Envelope envelope = (Envelope) params.getFeatureStore().getMetadata().get("extent");

                        int featureCount = params.getFeatureStore().getDataCollection().size();

                        index = new QuadtreeGt2(file.getAbsolutePath(), "NM", envelope, featureCount, params.isOverwrite());                        

                        index.rebuild();

                } catch (IOException e) {

                        throw new IndexException(e);

                } catch (BaseException e) {

                        throw new IndexException(e);

                }

                return index;

        }

}