Application: gvSIG desktop » gvSIG projections

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

 *

 * Copyright (C) 2006 Instituto de Desarrollo Regional 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

 *

 *   Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha

 *   Campus Universitario s/n

 *   02071 Alabacete

 *   Spain

 *

 *   +34 967 599 200

 */

package org.gvsig.crs.repository;

import java.sql.ResultSet;

import java.sql.SQLException;

import es.idr.teledeteccion.connection.EpsgConnection;

import es.idr.teledeteccion.connection.Query;

import java.util.logging.Level;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.crs.Crs;

import org.gvsig.crs.CrsException;

import org.gvsig.crs.ICrs;

import org.gvsig.crs.ogr.CrsEPSG;

import org.gvsig.crs.ogr.Epsg2wkt;

import org.gvsig.tools.dispose.Disposable;

/**

 * Repositorio de CRSs de EPSG

 * 

 * @author Diego Guerrero Sevilla (diego.guerrero@uclm.es)

 *

 */

public class EpsgRepository implements ICrsRepository, Disposable {

        private static final Logger logger =

        LoggerFactory.getLogger(EpsgRepository.class);

        public EpsgConnection connection = null;

        public EpsgRepository() {

                connection = new EpsgConnection();

        }

        /**

         * Obtiene un CRS a partir de su c?digo EPSG.

         * 

         * @param code Codigo EPSG del CRS. 

         * @return ICrs 

         */

        public ICrs getCrs(String code) {

                int epsg_code  = Integer.parseInt(code);

                boolean source_yn = false;

                int source_cod = 0;

                int datum_code = 0;

                int projection_conv_code = 0;

                String crs_kind = null;

                Epsg2wkt wkt = null;

                Crs crs = null;

                ResultSet result = null;

                String sentence = "SELECT source_geogcrs_code, projection_conv_code, "

                        + "coord_ref_sys_kind, datum_code "

                        + "FROM epsg_coordinatereferencesystem "

                        + "WHERE coord_ref_sys_code = " + code;

                connection.setConnectionEPSG();

                result = Query.select(sentence,connection.getConnection());        

                /*try {

                        connection.shutdown();

                } catch (SQLException e) {

                        // TODO Auto-generated catch block

                        logger....

                }*/

                try {

                        if (!result.next())

                                return null;

                        source_cod = result.getInt("source_geogcrs_code");

                        projection_conv_code = result.getInt("projection_conv_code");

                        crs_kind = result.getString("coord_ref_sys_kind");

                        datum_code = result.getInt("datum_code");

                } catch (SQLException e1) {

                    logger.warn("Error executing the SQL", e1);

                    return null;

                }

                if (datum_code != 0){

                        source_yn = true;

                }

                else if (source_cod != 0){

                        source_yn = false;

                }

                else source_yn = true;

                CrsEPSG ep = new CrsEPSG(epsg_code, source_yn, source_cod, projection_conv_code, connection);

                if (crs_kind.equals("geographic 2D") || crs_kind.equals("geographic 3D")){

                        wkt = new Epsg2wkt(ep , "geog");                        

                }

                else if (crs_kind.equals("projected")){

                        wkt = new Epsg2wkt(ep, "proj");

                }

                else if (crs_kind.equals("compound")){

                        wkt = new Epsg2wkt(ep,"comp");

                }

                else if (crs_kind.equals("geocentric")){

                        wkt = new Epsg2wkt(ep,"geoc");

                }

                try {

                        crs = new Crs(Integer.parseInt(code),wkt.getWKT());

                } catch (CrsException e) {

                    logger.warn("Impossible to parse the CRS", e);

                    return null;

                }

                return crs;

        }

        public void dispose() {

            try {

                this.connection.shutdown();

                this.connection = null;

            } catch (SQLException ex) {

                logger.warn("Can't shutdown the connection.",ex);

            }

        }

}