Application: gvSIG desktop » gvSIG geoprocess

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007,2012 gvSIG Association.

 *

 * 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.geoprocess.algorithm.merge;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.dataObjects.IVectorLayer;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.EditableFeature;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

import org.gvsig.geoprocess.algorithm.base.core.GeometryOperation;

import org.gvsig.geoprocess.lib.sextante.dataObjects.FlyrVectIVectorLayer;

/**

 * Builds a geometry with the intersection between two layers

 * 

 * @author <a href="mailto:nachobrodin@gmail.com">Nacho Brodin</a>

 */

public class MergeOperation extends GeometryOperation {

        private IVectorLayer                     layer            = null;

        public MergeOperation(IVectorLayer layer) {

                this.layer = layer;

        }

        /**

         * Computes intersection between the geometry and the overlay layer. The fields of the

         * intersected features will be added.

         * @param g

         * @param featureInput

         * @return

         */

        public EditableFeature invoke(org.gvsig.fmap.geom.Geometry g, Feature featureInput) {

                if(g == null)

                        return lastEditFeature;

                try {

                        if(inFeatureStore == ((FlyrVectIVectorLayer)layer).getFeatureStore())

                                lastEditFeature = persister.addFeature(featureInput, g);

                        else

                                lastEditFeature = persister.addDifferentFieldFeature(featureInput, g);

                } catch (CreateGeometryException e) {

                        Sextante.addErrorToLog(e);

                } catch (DataException e) {

                        Sextante.addErrorToLog(e);

                }

                return lastEditFeature;

        }

        /**

         * clips feature's geometry with the clipping geometry, preserving

         * feature's original attributes.

         * If feature's geometry doesn't touch clipping geometry, it will be

         * ignored.

         */

        public void invoke(org.gvsig.fmap.geom.Geometry g, EditableFeature featureInput) {

                try {

                        lastEditFeature = persister.addGeometryToExistingFeature(featureInput, g);

                } catch (CreateGeometryException e) {

                        Sextante.addErrorToLog(e);

                } catch (DataException e) {

                        Sextante.addErrorToLog(e);

                }

        }

}