| gvSIG desktop 1

/*

 * Created on 10-abr-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: 

 * $Log: 

 */

package com.iver.cit.gvsig.drivers;

import java.awt.geom.Rectangle2D;

import java.sql.Types;

import org.geotools.referencefork.referencing.operation.builder.MappedPosition;

import org.gvsig.referencing.MappedPositionContainer;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.hardcode.gdbms.driver.exceptions.ReloadDriverException;

import com.hardcode.gdbms.driver.exceptions.WriteDriverException;

import com.hardcode.gdbms.engine.data.DataSourceFactory;

import com.hardcode.gdbms.engine.data.driver.ObjectDriver;

import com.hardcode.gdbms.engine.data.edition.DataWare;

import com.hardcode.gdbms.engine.values.Value;

import com.hardcode.gdbms.engine.values.ValueFactory;

import com.iver.cit.gvsig.exceptions.expansionfile.ExpansionFileReadException;

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

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

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

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

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

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

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

/**

 * Memory driver to adapt MappedPositionContainer (which contains MappedPosition)

 * to fmap driver interfaces. It only returns geometries (no fields)

 * 

 * @author Alvaro Zabala

 *

 */

public class VectorErrorMemoryDriver implements VectorialDriver, ObjectDriver,

                BoundedShapes {

        public static final Rectangle2D EMPTY_FULL_EXTENT = new Rectangle2D.Double();

        private DriverAttributes attr = new DriverAttributes();

        /**

         * Name of the data source of this driver

         */

        String name;

        /**

         * Container of MappedPosition

         */

        MappedPositionContainer mappedPositionContainer;

        /**

         * Full extent of all features

         */

        Rectangle2D fullExtent;

        /**

         * Constructor

         * 

         * @param name

         *            descriptive name of the data source

         * @param features

         *            collection of features in memory

         * @param definition

         *            definition of the layer of these features

         */

        public VectorErrorMemoryDriver(String name,

                        MappedPositionContainer mappedPositionContainer) {

                this.name = name;

                this.mappedPositionContainer = mappedPositionContainer;

                attr.setLoadedInMemory(true);

                try {

                        computeFullExtent();

                } catch (ExpansionFileReadException e) {

                        e.printStackTrace();

                } catch (ReadDriverException e) {

                        e.printStackTrace();

                }

        }

        public int getShapeType() {

                return FShape.LINE;

        }

        public String getName() {

                return name;

        }

        public int getShapeCount() throws ReadDriverException {

                return mappedPositionContainer.getCount();

        }

        public Rectangle2D getFullExtent() throws ReadDriverException,

                        ExpansionFileReadException {

                if (fullExtent == null) {

                        // collection is empty

                        return EMPTY_FULL_EXTENT;

                }

                return fullExtent;

        }

        public IGeometry getShape(int index) throws ReadDriverException {

                if (index < mappedPositionContainer.getCount()){

                        MappedPosition mappedPosition = mappedPositionContainer.getMappedPosition(index);

                        double[] sourceCoords = mappedPosition.getSource().getCoordinates();

                        double[] targetCoords = mappedPosition.getTarget().getCoordinates();

                        GeneralPathX gpx = new GeneralPathX();

                        gpx.moveTo(sourceCoords[0], sourceCoords[1]);

                        gpx.lineTo(targetCoords[0], targetCoords[1]);

                        return ShapeFactory.createPolyline2D(gpx);

                }

                else

                        return null;

        }

        public void reload() throws ReloadDriverException {

        }

        public DriverAttributes getDriverAttributes() {

                return attr;

        }

        public boolean isWritable() {

                return false;

        }

        public int[] getPrimaryKeys() throws ReadDriverException {

                return null;

        }

        public void write(DataWare dataWare) throws WriteDriverException,

                        ReadDriverException {

        }

        public void setDataSourceFactory(DataSourceFactory dsf) {

        }

        public Value getFieldValue(long rowIndex, int fieldId)

                        throws ReadDriverException {

                if(fieldId == 0)

                        return ValueFactory.createValue(rowIndex);

                else

                        return ValueFactory.createNullValue();

        }

        public int getFieldCount() throws ReadDriverException {

                return 1;

        }

        public String getFieldName(int fieldId) throws ReadDriverException {

                if(fieldId == 0)

                        return "fid";

                else

                        return "";

        }

        public long getRowCount() throws ReadDriverException {

                return getShapeCount();

        }

        public int getFieldType(int i) throws ReadDriverException {

                if(i == 0)

                        return Types.NUMERIC;

                else

                        return -1;

        }

        public int getFieldWidth(int i) throws ReadDriverException {

                return 20;

        }

        public Rectangle2D getShapeBounds(int index) throws ReadDriverException,

                        ExpansionFileReadException {

                IGeometry geometry = getShape(index);

                return geometry.getBounds2D();

        }

        public int getShapeType(int index) throws ReadDriverException {

                IGeometry geometry = getShape(index);

                return geometry.getGeometryType();

        }

        private void computeFullExtent() throws ExpansionFileReadException, ReadDriverException {

                 for (int i = 0; i < getRowCount(); i++) {

                         Rectangle2D rAux = getShapeBounds(i);

                         if (fullExtent == null)

                                 fullExtent = rAux;

                         else

                                 fullExtent.add(rAux);

                 }//for

        }

        public MappedPositionContainer getMappedPositionContainer() {

                return mappedPositionContainer;

        }

}