Application: gvSIG desktop

/*

 * Created on 08-mar-2005

 *

 * 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

 */

package com.iver.cit.gvsig.fmap.operations.strategies;

import java.awt.Graphics2D;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import java.awt.image.BufferedImage;

import java.sql.SQLException;

import java.util.BitSet;

import org.cresques.cts.ICoordTrans;

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

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

import com.iver.cit.gvsig.fmap.core.IGeometry;

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

import com.iver.cit.gvsig.fmap.drivers.jdbc.GeometryIterator;

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

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

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

import com.iver.cit.gvsig.fmap.layers.layerOperations.ClassifiableVectorial;

import com.iver.cit.gvsig.fmap.layers.layerOperations.SingleLayer;

import com.iver.cit.gvsig.fmap.operations.Cancellable;

import com.iver.cit.gvsig.fmap.rendering.VectorialLegend;

/**

 * @author FJP

 *

 * TODO To change the template for this generated type comment go to

 * Window - Preferences - Java - Code Generation - Code and Comments

 */

public class DBStrategy extends DefaultStrategy {

        public DBStrategy(FLayer capa) {

                super(capa);

        }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.operations.strategies.Strategy#draw(java.awt.image.BufferedImage, java.awt.Graphics2D, com.iver.cit.gvsig.fmap.ViewPort, com.iver.cit.gvsig.fmap.operations.Cancellable)

     */

    public void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, Cancellable cancel) throws DriverException {

        // Nos aprovechamos del SQL para lanzar la consulta

        // teniendo en cuenta el boundingbox que toca.

        FLayer capa = getCapa();

        VectorialDBAdapter dbAdapter = (VectorialDBAdapter) ((SingleLayer) capa).getSource();

        String sqlOrig = "SELECT " + dbAdapter.getFields() + " FROM " + 

                                dbAdapter.getTableName() + " " + dbAdapter.getWhereClause();

        double xMin = viewPort.getAdjustedExtent().getMinX();

        double yMin = viewPort.getAdjustedExtent().getMinY();

        double xMax = viewPort.getAdjustedExtent().getMaxX();

        double yMax = viewPort.getAdjustedExtent().getMaxY();

        String strEPSG = viewPort.getProjection().getAbrev().substring(5);

        System.out.println(strEPSG);

        String wktBox = "GeometryFromText('LINESTRING(" + xMin + " " + yMin + ", "

                                        + xMax + " " + yMin + ", "

                                        + xMax + " " + yMax + ", "

                                        + xMin + " " + yMax + ")', "

                                        + strEPSG + ");";

        String sqlAux;

        if (dbAdapter.getWhereClause().startsWith("WHERE")) 

            sqlAux = sqlOrig + " the_geom && " + wktBox;

        else

            sqlAux = sqlOrig + "WHERE the_geom && " + wktBox;

        GeometryIterator geomIt = dbAdapter.getGeometryIterator(sqlAux);

        VectorialLegend l = (VectorialLegend) ((ClassifiableVectorial) capa).getLegend();

        try {

            while (geomIt.hasNext())

            {

                    if (cancel.isCanceled()) {

                        // TODO: Deber?amos cerrar el resulset que va dentro del iterator

                            break;

                    }

                IGeometry geom = geomIt.next();

                // TODO: CORREGIR LO DE LOS SIMBOLOS

                // Es probable que necesitemos generar un Feature

                // (Geometr?a + Atributos) para que opere con esa feature

                // el gestor de leyendas. A la leyenda le pasar?amos un

                // feature, y nos devolver? la colecci?n de s?mbolos a 

                // aplicar. Similar a lo de "processStylers" de GT2 

                geom.draw(g,viewPort,l.getDefaultSymbol());

            }

        } catch (SQLException e) {

            e.printStackTrace();

            throw new DriverException(e);

        }

    }

}