Application: gvSIG desktop » gvSIG projections

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 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 3

 * 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.

 */

/*

 * AUTHORS (In addition to CIT):

 * 2009 {DiSiD Technologies}  {{Task}}

 */

package org.gvsig.fmap.crs.persistence;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.crs.CRSFactory;

import org.gvsig.tools.dataTypes.DataTypes;

import org.gvsig.tools.dynobject.DynStruct;

import org.gvsig.tools.persistence.AbstractSinglePersistenceFactory;

import org.gvsig.tools.persistence.PersistenceManager;

import org.gvsig.tools.persistence.PersistentState;

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

/**

 * Factory to persist {@link IProjection} objects. The information about the

 * {@link IProjection} which will be persisted is its full code, containing all

 * required information to be able to reconstruct the {@link IProjection} object

 * through the {@link CRSFactory#getCRS(String)} method.

 * <p>

 * <strong>NOTE:</strong>To activate this factory, it must be instanced and

 * registered in the {@link PersistenceManager}. This will be usually performed

 * from the project Library.

 * </p>

 * 

 * @author 2009- <a href="cordinyana@gvsig.org">C?sar Ordi?ana</a> - gvSIG team

 * @author 2010- <a href="jjdelcerro@gvsig.org">Joaquin Jose del Cerro</a> -

 *         gvSIG team

 */

public class ProjectionPersistenceFactory extends

                AbstractSinglePersistenceFactory {

        private static final String FIELD_FULLCODE = "fullcode";

        private static final String DESCRIPTION_FULLCODE = "Projection abbreviature";

        private static final String DYNCLASS_NAME = "Projection";

        private static final String DYNCLASS_DESCRIPTION = "Projection";

        /**

         * Creates a new {@link ProjectionPersistenceFactory}.

         */

        public ProjectionPersistenceFactory() {

                super(IProjection.class, DYNCLASS_NAME, DYNCLASS_DESCRIPTION, null,

                                null);

                DynStruct definition = this.getDefinition();

                definition.addDynField(FIELD_FULLCODE).setDescription(

                                DESCRIPTION_FULLCODE).setMandatory(true).setType(

                                DataTypes.STRING);

        }

        public Object createFromState(PersistentState state)

                        throws PersistenceException {

                return CRSFactory.getCRS(state.getString(FIELD_FULLCODE));

        }

        public void saveToState(PersistentState state, Object obj)

                        throws PersistenceException {

                state.set(FIELD_FULLCODE, ((IProjection) obj).getFullCode());

        }

}