| gvSIG desktop 1

/*

 * Created on 16-feb-2006

 *

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

 *

 * Copyright (C) 2004 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

 */

/* CVS MESSAGES:

*

* $Id: AbstractGeoprocess.java 8212 2006-10-20 14:28:30Z azabala $

* $Log$

* Revision 1.9  2006-10-20 14:28:30  azabala

* changed visibility of createLayerFrom method to protected

*

* Revision 1.8  2006/09/15 10:42:54  caballero

* extensibilidad de documentos

*

* Revision 1.7  2006/08/29 07:56:30  cesar

* Rename the *View* family of classes to *Window* (ie: SingletonView to SingletonWindow, ViewInfo to WindowInfo, etc)

*

* Revision 1.6  2006/08/29 07:21:09  cesar

* Rename com.iver.cit.gvsig.fmap.Fmap class to com.iver.cit.gvsig.fmap.MapContext

*

* Revision 1.5  2006/06/29 07:33:57  fjp

* Cambios ISchemaManager y IFieldManager por terminar

*

* Revision 1.4  2006/06/20 18:19:43  azabala

* refactorizaci?n para que todos los nuevos geoprocesos cuelguen del paquete impl

*

* Revision 1.3  2006/06/12 19:15:38  azabala

* cambios para poder trabajar en geoprocessing con capas MULTI (dxf, jdbc, etc)

*

* Revision 1.2  2006/05/31 09:10:12  fjp

* Ubicaci?n de IWriter

*

* Revision 1.1  2006/05/24 21:12:16  azabala

* primera version en cvs despues de refactoring orientado a crear un framework extensible de geoprocessing

*

* Revision 1.7  2006/05/01 19:19:10  azabala

* la capa resultado tiene como nombre ahora solo el nombre del fichero (no la ruta completa)

*

* Revision 1.6  2006/03/17 19:52:19  azabala

* *** empty log message ***

*

* Revision 1.5  2006/03/14 19:34:18  azabala

* *** empty log message ***

*

* Revision 1.4  2006/03/14 18:32:46  fjp

* Cambio con LayerDefinition para que sea compatible con la definici?n de tablas tambi?n.

*

* Revision 1.3  2006/03/07 21:01:33  azabala

* *** empty log message ***

*

* Revision 1.2  2006/03/06 19:48:39  azabala

* *** empty log message ***

*

* Revision 1.1  2006/02/17 16:04:28  azabala

* *** empty log message ***

*

*

*/

package com.iver.cit.gvsig.geoprocess.core.fmap;

import java.io.File;

import java.util.Map;

import org.cresques.cts.IProjection;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.fmap.MapContext;

import com.iver.cit.gvsig.fmap.drivers.ILayerDefinition;

import com.iver.cit.gvsig.fmap.drivers.shp.IndexedShpDriver;

import com.iver.cit.gvsig.fmap.edition.EditionException;

import com.iver.cit.gvsig.fmap.edition.ISchemaManager;

import com.iver.cit.gvsig.fmap.edition.IWriter;

import com.iver.cit.gvsig.fmap.edition.writers.shp.MultiShpWriter;

import com.iver.cit.gvsig.fmap.edition.writers.shp.ShpWriter;

import com.iver.cit.gvsig.fmap.layers.FLayer;

import com.iver.cit.gvsig.fmap.layers.FLayers;

import com.iver.cit.gvsig.fmap.layers.FLyrVect;

import com.iver.cit.gvsig.fmap.layers.LayerFactory;

import com.iver.cit.gvsig.project.documents.view.gui.View;

/**

 * Base class with all commong logic to geoprocesses

 * @author azabala

 *

 */

public abstract class AbstractGeoprocess implements IGeoprocess {

        /**

         * Writes result features in a persistent

         * data format.

         */

        protected IWriter writer;

        /**

         * Creates schema of result data format.

         */

        protected ISchemaManager schemaManager;

        /**

         * All geoprocesses at least work with one

         * vectorial layer

         */

        protected FLyrVect firstLayer;

        public abstract void setParameters(Map params) throws GeoprocessException;

        public abstract void checkPreconditions() throws GeoprocessException;

        public abstract void process() throws GeoprocessException;

        public  void cancel(){

                try {

                        schemaManager.removeSchema("");

                } catch (EditionException e) {

                        // TODO Auto-generated catch block

                        e.printStackTrace();

                }

        }

        protected FLayer createLayerFrom(IWriter writer) throws GeoprocessException{

                FLyrVect solution = null;

                //Para evitar todos estos casts, hay que meter la

                //interfaz FileWriter

                String fileName = ((ShpWriter)writer).getShpPath();

                String layerName = null;

                int fileNameStart = fileName.lastIndexOf(File.separator) + 1;

                if(fileNameStart == -1)

                        fileNameStart = 0;

                layerName = fileName.substring(fileNameStart, fileName.length() /*-1*/);                

                File file = new File(fileName);

                IProjection proj = firstLayer.getProjection();

                //TODO La proyeccion se deberia leer del WRITER

                try {

                        IndexedShpDriver driver = new IndexedShpDriver();

                        driver.open(file);

                        driver.initialize();

                        solution = (FLyrVect) LayerFactory.createLayer(layerName,

                                                                        driver,

                                                                        file,

                                                                        proj);

                        return solution; 

                } catch (Exception e) {

                        throw new GeoprocessException("Problemas al cargar la capa resultado", e);

                }         

        }

        /**

         * Creates a new Layer with:

         * a) the same projection than input layer.

         * b) an adapter created to work with writer's persistent store

         * 

         * @return FLyrVect with geoprocess result

         */

        public FLayer getResult() throws GeoprocessException {

                if(! (writer instanceof MultiShpWriter)){

                        return createLayerFrom(writer);

                }else{

                        IWriter[] writers = ((MultiShpWriter)writer).getWriters();

                        if(writers.length > 1){

                                MapContext map = ((View)PluginServices.

                                                        getMDIManager().

                                                        getActiveWindow()).

                                                        getModel().

                                                        getMapContext();

                                FLayers solution = new FLayers(map, null);

                                String name = ((MultiShpWriter)writer).getFileName();

                                int fileNameStart = name.lastIndexOf(File.separator) + 1;

                                if(fileNameStart == -1)

                                        fileNameStart = 0;

                                name = name.substring(fileNameStart, name.length());                

                                solution.setName(name);

                                for(int i = 0; i < writers.length; i++){

                                        solution.addLayer(createLayerFrom(writers[i]));

                                }

                                return solution;

                        }else{

                                return createLayerFrom(writers[0]);

                        }

                }                

        }

        public void setResultLayerProperties(IWriter writer,

                        ISchemaManager schemaManager) {

                this.writer = writer;

                this.schemaManager = schemaManager;

        }

        public abstract ILayerDefinition createLayerDefinition();

}