Application: gvSIG desktop

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2016 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.dal.raster.impl;

import java.util.HashMap;

import java.util.Map;

import org.gvsig.fmap.dal.raster.BandDescriptor;

import org.gvsig.fmap.dal.raster.BandQuery;

import org.gvsig.raster.lib.buffer.api.BufferLocator;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

/**

 * Default implementation of {@link BandQuery}.

 *

 * @author <a href="mailto:lmarques@disid.com">Lluis Marques</a>

 *

 */

public class DefaultBandQuery implements BandQuery {

    private static final String PERSISTENCE_NAME = "BandQuery";

    private static final String PERSISTENCE_DESCRIPTION = "";

    private static final String BAND_FIELD_NAME = "band";

    private static final String BAND_DESCRIPTOR_FIELD_NAME = "bandDescriptor";

    private static final String VALUES_FIELD_NAME = "values";

    private int band;

    private BandDescriptor bandDescriptor;

    private Map<String, Object> values;

    /**

     * Empty constructor

     */

    public DefaultBandQuery() {

    }

    /**

     * Default constructor

     *

     * @param band

     *            Band of this BandQuery

     * @param bandDescriptor

     *            Descriptor of band

     */

    public DefaultBandQuery(int band, BandDescriptor bandDescriptor) {

        super();

        this.band = band;

        this.bandDescriptor = bandDescriptor;

        this.values = new HashMap<String, Object>();

    }

    @Override

    public int getBand() {

        return this.band;

    }

    @Override

    public BandDescriptor getDescriptor() {

        return this.bandDescriptor;

    }

    @Override

    public void setValue(String name, Object value) {

        // TODO Validate name and value

        this.values.put(name, value);

    }

    @Override

    public Object getValue(String name) {

        return this.values.get(name);

    }

    public static void registerPersistenceDefinition(){

        PersistenceManager persistenceManager = ToolsLocator.getPersistenceManager();

        DynStruct definition = persistenceManager.getDefinition(PERSISTENCE_NAME);

        if(definition == null){

            definition = persistenceManager.addDefinition(BandQuery.class, PERSISTENCE_NAME,

                PERSISTENCE_DESCRIPTION, null, null);

            definition.addDynFieldInt(BAND_FIELD_NAME);

            definition.addDynFieldObject(BAND_DESCRIPTOR_FIELD_NAME).setClassOfValue(BandDescriptor.class);

            definition.addDynFieldMap(VALUES_FIELD_NAME);

        }

    }

    @Override

    public void saveToState(PersistentState state) throws PersistenceException {

        state.set(BAND_FIELD_NAME, this.getBand());

        state.set(BAND_DESCRIPTOR_FIELD_NAME, this.getDescriptor());

        state.set(VALUES_FIELD_NAME, this.values);

    }

    @Override

    public void loadFromState(PersistentState state) throws PersistenceException {

        this.band = state.getInt(BAND_FIELD_NAME);

        this.bandDescriptor = (BandDescriptor) state.get(BAND_DESCRIPTOR_FIELD_NAME);

        this.values = new HashMap<String, Object>(state.getMap(VALUES_FIELD_NAME));

    }

    @Override

    public Object clone() throws CloneNotSupportedException {

        return new DefaultBandQuery(this.band, (BandDescriptor) this.getDescriptor().clone());

    }

}