Application: gvSIG desktop

/* 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.layers;

import java.awt.geom.Rectangle2D;

import org.cresques.cts.IProjection;

import com.hardcode.driverManager.DriverLoadException;

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

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

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

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

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

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

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

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

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

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

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

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

/**

 * Adapta un driver de base de datos vectorial a la interfaz vectorial,

 * manteniendo adem?s el estado necesario por una capa vectorial de base de

 * datos (par?metros de la conexi?n)

 */

public class VectorialDBAdapter extends VectorialAdapter implements ISpatialDB {

    private int numReg=-1;

    private SelectableDataSource ds = null;

        /**

         * incrementa el contador de las veces que se ha abierto el fichero.

         * Solamente cuando el contador est? a cero pide al driver que conecte con

         * la base de datos

         */

        public void start() throws ReadDriverException {

        ((IVectorialDatabaseDriver)driver).open();

    }

        /**

         * decrementa el contador de n?mero de aperturas y cuando llega a cero pide

         * al driver que cierre la conexion con el servidor de base de datos

         */

        public void stop() throws ReadDriverException {

            ((IVectorialDatabaseDriver)driver).close();

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.ISpatialDB#getFeatureIterator(java.awt.geom.Rectangle2D, java.lang.String)

         */

        /* public Connection getConnection()

        {

            return ((VectorialDatabaseDriver)driver).getConnection();

        }*/

        /* public IFeatureIterator getFeatureIterator(String sql) throws DriverException

        {

            return ((VectorialDatabaseDriver)driver).getFeatureIterator(sql);

        }*/

        public IFeatureIterator getFeatureIterator(Rectangle2D r, String strEPSG) throws ReadDriverException

        {

            return ((IVectorialDatabaseDriver)driver).getFeatureIterator(r, strEPSG);

        }

    /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.ISpatialDB#getFeatureIterator(java.awt.geom.Rectangle2D, java.lang.String, java.lang.String[])

         */

    public IFeatureIterator getFeatureIterator(Rectangle2D r, String strEPSG, String[] alphaNumericFieldsNeeded) throws ReadDriverException

    {

        return ((IVectorialDatabaseDriver)driver).getFeatureIterator(r, strEPSG, alphaNumericFieldsNeeded);

    }

    /**

     * Overwrites the policy of VectorialAdapter because databases dont have external

     * spatial indices (spatial index is internal to the database)

     * */

        public IFeatureIterator getFeatureIterator(Rectangle2D rect,

                                                                                                String[] fields,

                                                                                                IProjection newProjection,

                                                                                                boolean fastIterator) throws ReadDriverException{

                //TODO ver como incluir el concepto de fastIteration en bbdd

                //TODO Est? delegando la reproyecci?n en la bbdd, mientras que los drivers

                //de extJdbc no reproyecta ninguno

                return getFeatureIterator(rect, newProjection.getAbrev(), fields);

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.ISpatialDB#getFields()

         */

        public String[] getFields()

        {

            return ((IVectorialDatabaseDriver)driver).getFields();

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.ISpatialDB#getWhereClause()

         */

        public String getWhereClause()

        {

            return ((IVectorialDatabaseDriver)driver).getWhereClause();

        }

        /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.ISpatialDB#getTableName()

         */

        public String getTableName()

        {

            return ((IVectorialDatabaseDriver)driver).getTableName();

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.ReadableVectorial#getShape(int)

         */

        public IGeometry getShape(int index) throws ReadDriverException {

            IGeometry geom = null;

            geom = ((IVectorialDatabaseDriver)driver).getShape(index);

        return geom;

        }

        /**

         * @see com.iver.cit.gvsig.fmap.layers.ReadableVectorial#getShapeType()

         */

        public int getShapeType() throws ReadDriverException {

                return ((IVectorialDatabaseDriver)driver).getShapeType();

        }

        /**

         * @throws ReadDriverException

         * @see com.iver.cit.gvsig.fmap.layers.VectorialAdapter#getRecordset()

         */

        public SelectableDataSource getRecordset() throws ReadDriverException {

            if (driver instanceof ObjectDriver)

            {

            if (ds == null)

            {

                            String name = LayerFactory.getDataSourceFactory().addDataSource((ObjectDriver)driver);

                            try {

                    ds = new SelectableDataSource(LayerFactory.getDataSourceFactory().createRandomDataSource(name, DataSourceFactory.AUTOMATIC_OPENING));

                } catch (NoSuchTableException e) {

                    throw new RuntimeException(e);

                            } catch (DriverLoadException e) {

                                        throw new ReadDriverException(name,e);

                                }

            }

            }

                return ds;

        }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.fmap.layers.VectorialAdapter#getFeature(int)

     */

    public IFeature getFeature(int numReg) throws ReadDriverException {

        IGeometry geom;

        IFeature feat = null;

        geom = getShape(numReg);

        DataSource rs = getRecordset();

        int idFieldID = getLyrDef().getIdFieldID();

        Value[] regAtt = new Value[rs.getFieldCount()];

        String theID = null;

        for (int fieldId=0; fieldId < rs.getFieldCount(); fieldId++ )

        {

            regAtt[fieldId] =  rs.getFieldValue(numReg, fieldId);

            if (fieldId == idFieldID)

               theID = regAtt[fieldId].toString();

        }

        feat = new DefaultFeature(geom, regAtt, theID);

        return feat;

    }

    /* (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.layers.ISpatialDB#getLyrDef()

         */

    public DBLayerDefinition getLyrDef()

    {

        return ((IVectorialDatabaseDriver)driver).getLyrDef();

    }

        public int getRowIndexByFID(IFeature feat) {

                return ((IVectorialDatabaseDriver) driver).getRowIndexByFID(feat);

        }

}