Application: gvSIG desktop » gvSIG raster

/* 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.

* 

*/

package org.gvsig.raster.tools.app.basic.raster.process;

import javax.swing.SwingUtilities;

import org.gvsig.andami.PluginServices;

import org.gvsig.fmap.dal.coverage.exception.FileNotOpenException;

import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException;

import org.gvsig.fmap.dal.coverage.exception.RasterDriverException;

import org.gvsig.fmap.dal.coverage.store.props.Statistics;

import org.gvsig.raster.fmap.layers.FLyrRaster;

/**

 * Proceso para la generaci?n de estad?sticas.

 *

 * 10/12/2007

 * @author Nacho Brodin nachobrodin@gmail.com

 */

public class StatisticsProcess extends RasterProcess {

        private FLyrRaster            lyr   = null;

        private Statistics            stats = null;

        private boolean               force = false;

        private double                scale = 1;

        /**

         * Lanzador del procesos de estad?sticas

         * @param lyr Capa a calcular las estad?sticas

         * @param actions Clase que recoge eventos del proceso

         */

        public static void launcher(FLyrRaster lyr, IProcessActions actions) {

                RasterProcess process = new StatisticsProcess();

                process.addParam("layer", lyr);

                process.addParam("force", new Boolean(false));

                process.setActions(actions);

                process.start();        

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.rastertools.RasterProcess#init()

         */

        public void init() {

                lyr = getLayerParam("layer");

                force = getBooleanParam("force");

                double s = getDoubleParam("scale");

                if(s > 0 && s < 1)

                        scale = s;

        }

        /**

         * M?todo donde se ejecutar? el Thread, aqu? se calcular?n las 

         * estad?sticas.

         * @throws ProcessException 

         */

        public void process() throws ProcessInterruptedException, ProcessException {

                insertLineLog(PluginServices.getText(this, "statistics_generation"));

                if(lyr == null || lyr.getDataStore() == null)

                        return;

                stats = lyr.getDataStore().getStatistics();

                lyr.setReadingData(Thread.currentThread().getId() + "");

                if (force)

                        stats.forceToRecalc();

                try {

                        stats.calculate(scale);

                        SwingUtilities.invokeLater(new Runnable() {

                                public void run() {

                                        if (externalActions != null)

                                                externalActions.end(lyr);

                                }

                        });

                } catch (FileNotOpenException e) {

                        throw new ProcessException("No se ha podido escribir en el fichero rmf", e);

                } catch (RasterDriverException e) {

                        throw new ProcessException("Error leyendo bloques de datos para calcular estad?sticas", e);

                } finally {

                        lyr.setReadingData(null);

                }

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getPercent()

         */

        public int getPercent() {

                return (stats != null) ? stats.getPercent() : 0;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gui.beans.incrementabletask.IIncrementable#getTitle()

         */

        public String getTitle() {

                return PluginServices.getText(this, "increase_statistics");

        }

}