Application: gvSIG desktop

/**********************************************************************

 * $Id: OGRDataSource.java 915 2005-01-12 08:21:15Z igbrotru $

 *

 * Name:     OGRDataSource.java

 * Project:  JGDAL. Interface java to gdal (Frank Warmerdam).

 * Purpose:   

 * Author:   Nacho Brodin, brodin_ign@gva.es

 *

 **********************************************************************/

/*Copyright (C) 2004  Nacho Brodin <brodin_ign@gva.es>

 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.

 */

package es.gva.cit.jgdal;

/** 

 * Esta clase representa a una fuente de datos

 * 

 * @author Nacho Brodin <brodin_ign@gva.es>.<BR> Equipo de desarrollo gvSIG.<BR> http://www.gvsig.gva.es

 * @version 0.0

 * @link http://www.gvsig.gva.es

 */

public class OGRDataSource extends JNIBase{

        public native String getNameNat(long cPtr);

        public native long getLayerNat(long cPtr, int i);

        /**

         * Constructor

         * @param cPtr        direcci?n de memoria al objeto OGRDataSource de C. 

         */

        public OGRDataSource(long cPtr){

                this.cPtr=cPtr;

        }

        /**

         * Obtiene el nombre del datasource

         * @throws GdalException

         * @return Nombre del datasource

         */

        public String getName()throws GdalException{

                if(cPtr <= 0)

                        throw new GdalException("Error en getName(). El constructor ha fallado.");

                String name = getNameNat(cPtr);

                if(name==null)

                        throw new GdalException("Error en getName(). No se ha podido obtener el nombre del datasource.");

                return name;

        }

        /**

         * Obtiene el n?mero de capas

         * @throws GdalException

         * @return N?mero de capas

         */

         public int getLayerCount()throws GdalException{

                String msg1="Error en getLayerCount. El constructor no tuvo exito.";

                String msg2="Error en el conteo de capas.";

                return baseSimpleFunctions(11,msg1,msg2);

         }

         /**

         * Obtiene la capa indicada por el ?ndice

         * @throws GdalException

         * @return una capa

         */

         public OGRLayer getLayer(int i)throws GdalException{

                 if(cPtr <= 0)

                        throw new GdalException("Error en getLayer(). El constructor no tuvo exito");

                long layer = getLayerNat(cPtr, i);

                if(layer<=0)

                        throw new GdalException("Error en getLayer(). No se ha podido obtener la capa indicada.");

                return new OGRLayer(layer);

         }

}