Application: gvSIG desktop » gvSIG geoprocess

/*

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

 *

 * Copyright (C) 2010 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.

 */

package org.gvsig.sextante.app.algorithm.dissolve;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import org.gvsig.fmap.dal.DataSet;

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.dal.feature.FeatureSet;

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

import org.gvsig.fmap.dal.feature.impl.DefaultFeatureSelection;

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

import org.gvsig.sextante.app.algorithm.base.core.GeometryOperation;

import org.gvsig.sextante.app.algorithm.base.util.GeometryUtil;

import org.gvsig.tools.dispose.DisposableIterator;

import com.vividsolutions.jts.geom.Geometry;

import es.unex.sextante.core.Sextante;

/**

 * Dissolve operation

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

 */

public class DissolveOperation extends GeometryOperation {

        private EditableFeature                  lastEditFeature  = null;

        private ArrayList<Geometry>              geometries       = new ArrayList<Geometry>();

        private IDissolveRule                    criteria         = null;

        private AtomicDissolveOperation          atomicOperation  = new AtomicDissolveOperation();

        /**

         * Cada elemento representa una feature del vectorial de entrada. Cuando se hace un dissolve de

         * esa feature con otra su posici?n en el array se pone a false para no volver a procesarla.

         */

        private boolean[]                        analizedFeats    = null;

        public DissolveOperation(IDissolveRule criteria) {

                this.criteria = criteria;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.sextante.app.algorithm.base.core.GeometryOperation#invoke(org.gvsig.fmap.geom.Geometry, org.gvsig.fmap.dal.feature.Feature)

         */

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

                if(g == null)

                        return lastEditFeature;

                atomicOperation.setCriteria(criteria);

                atomicOperation.setGeometryList(geometries);

                atomicOperation.setFeature(feature);

                atomicOperation.setFeatureStore(persister.getOutputFeatureStore(), null);

                atomicOperation.setAnalizedFeatureList(analizedFeats);

                atomicOperation.setFeatureStore(inFeatureStore);

                try {

                        atomicOperation.computesOperation(selectedGeom);

                        Feature feat = (Feature)atomicOperation.getResult();

                        lastEditFeature = persister.addFeature(feat, feat.getDefaultGeometry());

                } catch (DataException e) {

                        Sextante.addErrorToLog(e);

                } catch (CreateGeometryException e) {

                        Sextante.addErrorToLog(e);

                }

                return lastEditFeature;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.sextante.app.algorithm.base.core.GeometryOperation#invoke(org.gvsig.fmap.geom.Geometry, org.gvsig.fmap.dal.feature.EditableFeature)

         */

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

                if(g == null)

                        return;

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.sextante.app.algorithm.base.core.IOperation#getResult()

         */

        public Object getResult() {

                return lastEditFeature;

        }

        /**

         * Computes a complete operation over the input FeatureStore. The result of this operation

         * is stored in the output FeatureStore. 

         * @param inFeatStore

         *        Input FeatureStore

         * @param outFeatStore

         *        Output FeatureStore

         * @param attrNames

         *        List of attributes to build the output feature store

         * @param selectedGeom

         *        If it is true only the selected geometries will be processed

         * @throws DataException

         */

        @SuppressWarnings("unchecked")

        public void computesGeometryOperation(FeatureStore inFeatStore,

                                                                        FeatureStore outFeatStore,

                                                                        String[] attrNames,

                                                                        boolean selectedGeom,

                                                                        boolean closeOutStore) throws DataException {

                this.inFeatureStore = inFeatStore;

                this.selectedGeom = selectedGeom;

                FeatureSet featuresSet = null;

                featuresSet = inFeatStore.getFeatureSet();

                setFeatureStore(outFeatStore, attrNames);

                DisposableIterator it = null;

                if(selectedGeom) {

                        DataSet ds = inFeatStore.getSelection();

                        it = ((DefaultFeatureSelection)ds).iterator();

                        numberOfFeatures = (int)((DefaultFeatureSelection)ds).getSelectedCount();

                } else {

                        it = featuresSet.iterator();

                        numberOfFeatures = (int)featuresSet.getSize();

                }

                if(progressModel != null)

                        progressModel.setTotalNumberOfSteps(numberOfFeatures);

                analizedFeats = new boolean[numberOfFeatures];

                int iCount = 0;

                int featAnalized = 0;

                while( it.hasNext() ) {

                        Feature feature = (Feature)it.next();

                        if(analizedFeats[featAnalized]) {

                                featAnalized ++;

                                continue;

                        }

                        analizedFeats[featAnalized] = true;

                        List geomList = feature.getGeometries();

                        geometries.clear();

                        if(progressModel != null)

                                progressModel.setProgress(iCount);

                        iCount ++;

                        if(geomList == null) {

                                org.gvsig.fmap.geom.Geometry geom = feature.getDefaultGeometry();

                                geometries.add(GeometryUtil.geomToJTS(geom));

                                invoke(geom, feature);

                                featAnalized ++;

                                continue;

                        }

                        Iterator<org.gvsig.fmap.geom.Geometry> itGeom = geomList.iterator();

                        while(itGeom.hasNext()) {

                                org.gvsig.fmap.geom.Geometry g = itGeom.next();

                                geometries.add(GeometryUtil.geomToJTS(g));

                                invoke(g, feature);

                        }

                        featAnalized ++;

                }

                if(closeOutStore && persister != null)

                        persister.end();

        }

}