Application: gvSIG desktop

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

 *

 * Copyright (C) 2005 IVER T.I. and 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.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.data.vectorial;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import org.gvsig.data.exception.InitializeException;

import org.gvsig.data.exception.ReadException;

import org.gvsig.data.vectorial.expansionadapter.IExpansionAdapter;

/**

 * DOCUMENT ME!

 *

 * @author Vicente Caballero Navarro

 */

public class FeatureManager {

    protected HashMap relations = new HashMap();//<IFeatureID,Integer>

    protected IExpansionAdapter expansionAdapter;

    protected ArrayList deletedFeatures = new ArrayList();//<IFeatureID>

    protected int num=0;

    public FeatureManager(IExpansionAdapter expansionAdapter){

            this.expansionAdapter=expansionAdapter;

    }

    public void deleteFeature(IFeatureID id) {

        deletedFeatures.add(id);

        num--;

    }

    /**

     * DOCUMENT ME!

     *

     * @param feature DOCUMENT ME!

     */

    public void addFeature(IFeature feature) {

        int pos = expansionAdapter.addObject(feature);

        relations.put(feature.getID(), new Integer(pos));

        num++;

    }

    /**

     * DOCUMENT ME!

     *

     * @param id DOCUMENT ME!

     */

    public void deleteLastFeature(IFeatureID id) {

        expansionAdapter.deleteLastObject();

        relations.remove(id);

        num--;

    }

    /**

     * DOCUMENT ME!

     *

     * @param id DOCUMENT ME!

     *

     * @return DOCUMENT ME!

     */

    public boolean contains(IFeatureID id) {

        return relations.containsKey(id);

    }

    /**

     * DOCUMENT ME!

     *

     * @param id DOCUMENT ME!

     *

     * @return DOCUMENT ME!

     * @throws IsNotFeatureSettingException

     */

    public IFeature getFeature(IFeatureID id,IFeatureStore store) throws InitializeException {

        int num = ((Integer) relations.get(id)).intValue();

        IFeature feature=(IFeature)expansionAdapter.getObject(num);

               return getCorrectFeature(feature, store);

    }

    private IFeature getCorrectFeature(IFeature feature,IFeatureStore store) throws InitializeException {

             Iterator iterator=store.getDefaultFeatureType().iterator();

         IFeature newFeature=store.createFeature(store.getDefaultFeatureType());

         ((Feature)newFeature).loading();

         while (iterator.hasNext()) {

                         IFeatureAttributeDescriptor fad = (IFeatureAttributeDescriptor) iterator.next();

                         int i=((AttributeDescriptor)fad).originalPosition();

                         try {

                                 if (i<feature.size()){

                                         newFeature.set(i,feature.get(i));

                                 }else{

                                         newFeature.set(i,fad.getDefaultValue());

                                 }

                         } catch (IsNotFeatureSettingException e) {

                                 throw new InitializeException("FeatureManager",e);

                         }

                 }

         ((Feature)newFeature).stopLoading();

         return newFeature;

        }

        /**

     * DOCUMENT ME!

     *

     * @param feature DOCUMENT ME!

     * @param oldFeature DOCUMENT ME!

     */

    public void updateFeature(IFeature feature, IFeature oldFeature) {

        deletedFeatures.add(oldFeature.getID());

        int num = expansionAdapter.updateObject(feature);

        /*

         * Actualiza la relaci?n del ?ndice de la geometr?a al ?ndice en el

         * fichero de expansi?n.

         */

        relations.put(feature.getID(), new Integer(num));

    }

    /**

     * DOCUMENT ME!

     *

     * @param id DOCUMENT ME!

     */

    public void restoreFeature(IFeatureID id) {

        deletedFeatures.remove(id);

        num++;

    }

    public int getNum(){

            return num;

    }

    public IFeature getFeature(int i,IFeatureStore store) throws ReadException{

            IFeature feature=(IFeature)expansionAdapter.getObject(i);

            return getCorrectFeature(feature,store);

    }

    public boolean isDeleted(IFeature feature){

            return deletedFeatures.contains(feature.getID());

    }

        public void clear() {

                relations.clear();//<IFeatureID,Integer>

            expansionAdapter.close();

            deletedFeatures.clear();//<IFeatureID>

            num=0;

        }

//        public IFeatureCollection getDataCollection(IDataCollection originalCollection, IFeatureType type, String filter, String order) {

//                MemoryFeatureCollection memoryCollection=new MemoryFeatureCollection();

////                TODO Filtrar y ordenar, quedar? tambi?n pendiente el IFeatureType que se pasa como

//                //par?metro ya que aqu? lo ?nico que introducimos al DataCollection son IFeatureID,

//                //todav?a no creamos IFeatures

//                for (int i=0;i<relations.size();i++){

//                        IFeature feature=(IFeature)expansionAdapter.getObject(i);

//                        if (!deletedFeatures.contains(feature.getID())){

//                                memoryCollection.add(feature);

//                        }

//                }

//                Iterator iter=originalCollection.iterator();

//                int i=0;

//                featureStore.open();

//                while (iter.hasNext()) {

//                        IFeature feature = (IFeature) iter.next();

//                        if (!deletedFeatures.contains(feature.getID())){

//                                memoryCollection.add(feature);

//                        }

//                        i++;

//                }

//

//                //TODO en el filtro de las features originales hay que a?adir, que no muestre las que est?n el el HashMap deletedFeatures

////                IFeatureCollection featureCollection=(IFeatureCollection)featureStore.getDataCollection(type,filter,order);

//

//

//                EditingFeatureCollection collection=new EditingFeatureCollection(originalCollection, memoryCollection,type);

////                collection.

////                MemoryFeatureCollection collection=new MemoryFeatureCollection();

//                //TODO Filtrar y ordenar, quedar? tambi?n pendiente el IFeatureType que se pasa como

//                //par?metro ya que aqu? lo ?nico que introducimos al DataCollection son IFeatureID,

//                //todav?a no creamos IFeatures

////                featureStore.createDefaultFeature()

////                for (int i=0;i<driver.getFeatureCount();i++){

////                        MemoryFeatureID id=new MemoryFeatureID(driver.getFeatureByPosition(type,i));

////                        collection.add(id);

////                }

//                return collection;

//

//        }

}