| gvSIG desktop 1

/* 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.fmap.dal.feature.impl;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

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

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

import org.gvsig.fmap.dal.feature.impl.expansionadapter.ExpansionAdapter;

/**

 * DOCUMENT ME!

 *

 * @author Vicente Caballero Navarro

 */

public class FeatureTypeManager {

    private ExpansionAdapter expansionAdapter;

    private ArrayList deleted = new ArrayList();//<FeatureID>

    private int deltaSize=0;

        private HashMap added=new HashMap();

        private HashMap modifiedFromOriginal=new HashMap();

    public FeatureTypeManager(ExpansionAdapter expansionAdapter){

            this.expansionAdapter=expansionAdapter;

    }

    public FeatureType delete(String id) {

        deleted.add(id);

        FeatureType type=(FeatureType)added.remove(id);

        if (type==null) {

                        type=(FeatureType)modifiedFromOriginal.remove(id);

                }

        deltaSize--;

        return type;

    }

    /**

     * DOCUMENT ME!

     *

     * @param feature DOCUMENT ME!

     */

    public void add(FeatureType type) {

        int pos = expansionAdapter.addObject(type);

        added.put(type.getId(),new Integer(pos));

        deltaSize++;

    }

    /**

     * DOCUMENT ME!

     *

     * @param id DOCUMENT ME!

     */

    public void deleteLastFeature() {

        expansionAdapter.deleteLastObject();

        FeatureType type=(FeatureType)expansionAdapter.getObject(expansionAdapter.getSize()-1);

        added.remove(type.getId());

        modifiedFromOriginal.remove(type.getId());

        deltaSize--;

    }

    /**

     * DOCUMENT ME!

     *

     * @param id DOCUMENT ME!

     *

     * @return DOCUMENT ME!

     * @throws IsNotFeatureSettingException

     */

    public FeatureType getType(String id) throws DataException {

            Integer intNum =((Integer) added.get(id));

            if (intNum == null){

                    intNum =((Integer) modifiedFromOriginal.get(id));

                if (intNum == null){

                        return null;

                }

            }

        int num = intNum.intValue();

        FeatureType type=(FeatureType)expansionAdapter.getObject(num);

        return type;

    }

        /**

     * DOCUMENT ME!

     *

     * @param feature DOCUMENT ME!

     * @param oldFeature DOCUMENT ME!

     */

    public int update(FeatureType type, FeatureType oldType) {

//        deleted.add(oldType.getId());

            int oldNum=-1;

        int num = expansionAdapter.addObject(type);

        String id=type.getId();

        if (added.containsKey(id)){

                oldNum=((Integer)added.get(id)).intValue();

                added.put(id,new Integer(num));

        }else{

                oldNum=((Integer)modifiedFromOriginal.get(id)).intValue();

                modifiedFromOriginal.put(id,new Integer(num));

        }

        return oldNum;

    }

    /**

     * DOCUMENT ME!

     *

     * @param id DOCUMENT ME!

     */

    public void restore(String id) {

        deleted.remove(id);

        deltaSize++;

    }

    public void restore(String id,int num){

            if (added.containsKey(id)){

                added.put(id,new Integer(num));

        }else{

                modifiedFromOriginal.put(id,new Integer(num));

        }

    }

    public boolean isDeleted(FeatureType type){

            return deleted.contains(type.getId());

    }

    public boolean isDeleted(String id) {

                return deleted.contains(id);

        }

        public void clear() {

                added.clear();

                modifiedFromOriginal.clear();

            expansionAdapter.close();

            deleted.clear();//<FeatureID>

            deltaSize=0;

        }

        public boolean hasChanges() {

                return added.size()>0 || modifiedFromOriginal.size() > 0 || deleted.size() > 0;

        }

        public Iterator newsIterator() {

                return added.values().iterator();

        }

        public boolean hasNews() {

                return !added.isEmpty();

        }

        public long getDeltaSize() {

                return deltaSize;

        }

}