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.io.IOException;

import org.apache.log4j.Logger;

import org.xml.sax.SAXException;

import com.hardcode.driverManager.DriverLoadException;

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.DriverException;

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

import com.hardcode.gdbms.engine.data.persistence.Handler;

import com.hardcode.gdbms.engine.data.persistence.Memento;

import com.hardcode.gdbms.engine.data.persistence.MementoContentHandler;

import com.hardcode.gdbms.engine.data.persistence.MementoException;

import com.hardcode.gdbms.engine.instruction.FieldNotFoundException;

import com.hardcode.gdbms.engine.instruction.SemanticException;

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

import com.hardcode.gdbms.parser.ParseException;

import com.iver.utiles.XMLEntity;

/**

 * DataSource seleccionable.

 *

 * @author Fernando Gonz?lez Cort?s

 */

public class SelectableDataSource implements DataSource {

        private static Logger logger = Logger.getLogger(SelectableDataSource.class.getName());

        private SelectionSupport selectionSupport = new SelectionSupport();

        private DataSource dataSource;

        /**

         * Crea un nuevo SelectableDataSource.

         *

         * @param name

         * @param ds

         */

        public SelectableDataSource(DataSource ds) {

                dataSource = ds;

        }

        public static SelectableDataSource createSelectableDataSource(XMLEntity xml) throws NoSuchTableException, ParseException, DriverLoadException, DriverException, SemanticException, IOException, XMLException{

                SelectionSupport ss = new SelectionSupport();

                ss.setXMLEntity(xml.getChild(0));

                XMLEntity xmlDS = xml.getChild(1);

                GDBMSParser parser = new GDBMSParser(xmlDS);

                MementoContentHandler gdbmsHandler = new MementoContentHandler();

                parser.setContentHandler(gdbmsHandler);

                try {

                        parser.parse();

                } catch (SAXException e) {

                        throw new XMLException(e);

                }

                return new SelectableDataSource(gdbmsHandler.getDataSource(LayerFactory.getDataSourceFactory(), DataSourceFactory.AUTOMATIC_MODE));

        }

        public void setDataSourceFactory(DataSourceFactory dsf) {

                dataSource.setDataSourceFactory(dsf);

        }

        public void setSourceInfo(DriverInfo sourceInfo) {

                dataSource.setSourceInfo(sourceInfo);

        }

        /**

         * A?ade el soporte para la selecci?n.

         *

         * @param selectionSupport

         */

        public void setSelectionSupport(SelectionSupport selectionSupport) {

                this.selectionSupport = selectionSupport;

        }

        /**

         * Devuelve el DBMS.

         *

         * @return String.

         */

        public String getDBMS() {

                return dataSource.getDBMS();

        }

        /**

         * Devuelve el n?mero de campos.

         *

         * @return N?mero de campos.

         *

         * @throws DriverException

         */

        public int getFieldCount() throws DriverException {

                return dataSource.getFieldCount();

        }

        /**

         * Devuelve el ?ndice del campo a partir de su nombre.

         *

         * @param arg0 nombre del campo.

         *

         * @return ?ndice.

         *

         * @throws DriverException

         * @throws FieldNotFoundException

         */

        public int getFieldIndexByName(String arg0)

                throws DriverException {

                return dataSource.getFieldIndexByName(arg0);

        }

        /**

         * Devuelve el nombre del campo a partir del ?ndice.

         *

         * @param arg0 ?ndice.

         *

         * @return nombre del campo.

         *

         * @throws DriverException

         */

        public String getFieldName(int arg0) throws DriverException {

                return dataSource.getFieldName(arg0);

        }

        /**

         * Devuelve el valor a partir del n?mro de fila y columna.

         *

         * @param arg0 n?mero de registro.

         * @param arg1 n?mero de campo.

         *

         * @return Valor.

         *

         * @throws DriverException

         */

        public Value getFieldValue(long arg0, int arg1) throws DriverException {

                return dataSource.getFieldValue(arg0, arg1);

        }

        /**

         * Devuelve el nombre del DataSource.

         *

         * @return Nombre.

         */

        public String getName() {

                return dataSource.getName();

        }

        /**

         * Devuelve el n?mro de filas en total.

         *

         * @return n?mero de filas.

         *

         * @throws DriverException

         */

        public long getRowCount() throws DriverException {

                return dataSource.getRowCount();

        }

        /**

         * Inicializa el dataSource.

         *

         * @throws DriverException

         */

        public void start() throws DriverException {

                logger.debug("dataSource.start()");

                dataSource.start();

        }

        /**

         * Finaliza el DataSource.

         *

         * @throws DriverException

         */

        public void stop() throws DriverException {

                logger.debug("dataSource.stop()");

                dataSource.stop();

        }

        /**

         * Cuando ocurre un evento de cambio en la selecci?n, ?ste puede ser uno de

         * una gran cantidad de eventos. Con el fin de no propagar todos estos

         * eventos, se realiza la propagaci?n de manera manual al final de la

         * "r?faga" de eventos

         */

        public void fireSelectionEvents() {

                selectionSupport.fireSelectionEvents();

        }

        /**

         * A?ade un nuevo Listener al SelectionSupport.

         *

         * @param listener SelectionListener.

         */

        public void addSelectionListener(SelectionListener listener) {

                selectionSupport.addSelectionListener(listener);

        }

        /**

         * Borra un Listener al SelectionSupport.

         *

         * @param listener Listener a borrar.

         */

        public void removeSelectionListener(SelectionListener listener) {

                selectionSupport.removeSelectionListener(listener);

        }

        /**

         * Borra la selecci?n.

         */

        public void clearSelection() {

                selectionSupport.clearSelection();

        }

        /**

         * Develve un FBitSet con los ?ndices de los elementos seleccionados.

         *

         * @return FBitset con los elementos seleccionados.

         */

        public FBitSet getSelection() {

                return selectionSupport.getSelection();

        }

        /**

         * Devuelve el SelectionSupport.

         *

         * @return SelectinSuport.

         */

        public SelectionSupport getSelectionSupport() {

                return selectionSupport;

        }

        /**

         * Devuelve true si el elemento est? seleccionado.

         *

         * @param recordIndex ?ndice del registro.

         *

         * @return True si el registro est? seleccionado.

         */

        public boolean isSelected(int recordIndex) {

                return selectionSupport.isSelected(recordIndex);

        }

        /**

         * Inserta una nueva selecci?n.

         *

         * @param selection FBitSet.

         */

        public void setSelection(FBitSet selection) {

                selectionSupport.setSelection(selection);

        }

        /**

         * Inserta un nuevo nombre para el dataSource.

         *

         * @param name Nuevo nombre del DataSource.

         *

         * @throws RuntimeException

         */

        public void setName(String name) {

                try {

                        LayerFactory.getDataSourceFactory().changeDataSourceName(dataSource.getName(), name);

                } catch (NoSuchTableException e) {

                        throw new RuntimeException("No se encuentra la tabla????");

                }

        }

        private void putMemento(XMLEntity xml) throws XMLException {

                try {

                        GDBMSHandler handler = new GDBMSHandler();

                        Memento m = getMemento();

                        m.setContentHandler(handler);

                        m.getXML();

                        XMLEntity child = handler.getXMLEntity();

                        xml.addChild(child);

                } catch (MementoException e) {

                        throw new XMLException(e);

                } catch (SAXException e) {

                        throw new XMLException(e);

                }

        }

        /**

         * Devuelve el XMLEntity con la informaci?n necesaria para reproducir el

         * DataSource.

         *

         * @return XMLEntity.

         * @throws XMLException

         */

        public XMLEntity getXMLEntity() throws XMLException {

                XMLEntity xml = new XMLEntity();

                xml.putProperty("className",this.getClass().getName());

                xml.addChild(selectionSupport.getXMLEntity());

                putMemento(xml);

                return xml;

        }

        /**

         * @see com.hardcode.gdbms.engine.data.DataSource#getWhereFilter()

         */

        public long[] getWhereFilter() throws IOException {

                return dataSource.getWhereFilter();

        }

        /**

         * @see com.hardcode.gdbms.engine.data.ReadDriver#getFieldType(int)

         */

        public int getFieldType(int i) throws DriverException {

                return dataSource.getFieldType(i);

        }

        /**

         * @see com.hardcode.gdbms.engine.data.DataSource#getDataSourceFactory()

         */

        public DataSourceFactory getDataSourceFactory() {

                return dataSource.getDataSourceFactory();

        }

        /**

         * @see com.hardcode.gdbms.engine.data.HasProperties#getProperty(java.lang.String)

         */

        public String getProperty(String propertyName) {

                return dataSource.getProperty(propertyName);

        }

        /**

         * @see com.hardcode.gdbms.engine.data.DataSource#getAsString()

         */

        public String getAsString() throws DriverException {

                return dataSource.getAsString();

        }

        /**

         * @see com.hardcode.gdbms.engine.data.DataSource#remove()

         */

        public void remove() {

                dataSource.remove();

        }

        /**

         * @see com.hardcode.gdbms.engine.data.DataSource#getMemento()

         */

        public Memento getMemento() throws MementoException {

                return dataSource.getMemento();

        }

        /**

         * @see com.hardcode.gdbms.engine.data.DataSource#getSourceInfo()

         */

        public DriverInfo getSourceInfo() {

                return dataSource.getSourceInfo();

        }

}