root / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / layers / SelectableDataSource.java @ 31228
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package com.iver.cit.gvsig.fmap.layers; |
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import java.io.IOException; |
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import org.apache.log4j.Logger; |
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import org.xml.sax.SAXException; |
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import com.hardcode.driverManager.Driver; |
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import com.hardcode.driverManager.DriverLoadException; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.hardcode.gdbms.driver.exceptions.ReloadDriverException; |
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import com.hardcode.gdbms.driver.exceptions.WriteDriverException; |
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import com.hardcode.gdbms.engine.data.DataSource; |
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import com.hardcode.gdbms.engine.data.DataSourceFactory; |
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import com.hardcode.gdbms.engine.data.IDataSourceListener; |
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import com.hardcode.gdbms.engine.data.NoSuchTableException; |
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import com.hardcode.gdbms.engine.data.SourceInfo; |
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import com.hardcode.gdbms.engine.data.driver.DriverException; |
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import com.hardcode.gdbms.engine.data.edition.DataWare; |
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import com.hardcode.gdbms.engine.data.persistence.Memento; |
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import com.hardcode.gdbms.engine.data.persistence.MementoContentHandler; |
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import com.hardcode.gdbms.engine.data.persistence.MementoException; |
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import com.hardcode.gdbms.engine.instruction.EvaluationException; |
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import com.hardcode.gdbms.engine.instruction.FieldNotFoundException; |
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import com.hardcode.gdbms.engine.instruction.SemanticException; |
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import com.hardcode.gdbms.engine.values.Value; |
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import com.hardcode.gdbms.engine.values.ValueCollection; |
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import com.hardcode.gdbms.parser.ParseException; |
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import com.iver.cit.gvsig.fmap.drivers.FieldDescription; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.Selectable; |
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import com.iver.utiles.NumberUtilities; |
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import com.iver.utiles.XMLEntity; |
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/**
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* DataSource seleccionable.
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*
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* @author Fernando Gonz?lez Cort?s
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*/
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public class SelectableDataSource implements DataSource,Selectable { |
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private static Logger logger = Logger.getLogger(SelectableDataSource.class.getName()); |
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private SelectionSupport selectionSupport = new SelectionSupport(); |
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private DataSource dataSource; |
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private int[] mapping = null; |
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private String[] alias = null; |
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/**
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* Crea un nuevo SelectableDataSource.
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*
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* @param name
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* @param ds
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* @throws ReadDriverException TODO
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*/
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public SelectableDataSource(DataSource ds) throws ReadDriverException { |
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dataSource = ds; |
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dataSource.start(); |
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// Creamos el mapping de campos externos que no muestran el PK.
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mapExternalFields(); |
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alias = new String[mapping.length]; |
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for (int i=0; i < mapping.length; i++) |
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{ |
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alias[i] = getFieldName(i); |
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} |
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} |
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/**
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* Maps real fields or "external" fields. We don't want to see virtual fields.
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* @throws ReadDriverException
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*/
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public void mapExternalFields() throws ReadDriverException { |
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int numExternalFields = 0; |
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// this.dataSource.start();
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int fieldCount=dataSource.getFieldCount();
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for (int i=0; i < fieldCount; i++) |
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{ |
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if (!dataSource.isVirtualField(i))
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numExternalFields++; |
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} |
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mapping = new int[numExternalFields]; |
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int j=0; |
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for (int i=0; i < fieldCount; i++) |
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{ |
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if (!dataSource.isVirtualField(i)) {
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mapping[j] = i; |
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j++; |
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} |
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} |
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// this.dataSource.stop();
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} |
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public static SelectableDataSource createSelectableDataSource(XMLEntity xml) throws DriverLoadException, XMLException{ |
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SelectionSupport ss = new SelectionSupport();
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ss.setXMLEntity(xml.getChild(0));
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XMLEntity xmlDS = xml.getChild(1);
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GDBMSParser parser = new GDBMSParser(xmlDS);
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MementoContentHandler gdbmsHandler = new MementoContentHandler();
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parser.setContentHandler(gdbmsHandler); |
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try {
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parser.parse(); |
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} catch (SAXException e) {
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throw new XMLException(e); |
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} |
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SelectableDataSource sds; |
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try {
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sds = new SelectableDataSource(gdbmsHandler.getDataSource(LayerFactory.getDataSourceFactory(), DataSourceFactory.AUTOMATIC_OPENING));
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} catch (EvaluationException e1) {
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throw new XMLException(e1); |
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} catch (ReadDriverException e) {
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throw new XMLException(e); |
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} catch (DriverLoadException e) {
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throw new XMLException(e); |
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} catch (SemanticException e) {
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throw new XMLException(e); |
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} catch (ParseException e) { |
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throw new XMLException(e); |
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} catch (NoSuchTableException e) {
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throw new XMLException(e); |
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} |
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sds.selectionSupport=ss; |
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return sds;
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} |
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public void setDataSourceFactory(DataSourceFactory dsf) { |
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dataSource.setDataSourceFactory(dsf); |
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} |
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public void setSourceInfo(SourceInfo sourceInfo) { |
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dataSource.setSourceInfo(sourceInfo); |
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} |
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/**
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* A?ade el soporte para la selecci?n.
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*
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* @param selectionSupport
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*/
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public void setSelectionSupport(SelectionSupport selectionSupport) { |
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this.selectionSupport = selectionSupport;
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} |
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/**
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* Devuelve el n?mero de campos.
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*
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* @return N?mero de campos.
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*
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* @throws DriverException
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*/
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public int getFieldCount() throws ReadDriverException { |
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// return dataSource.getFieldCount()-numVirtual;
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// if (mapping.length != dataSource.getFieldCount())
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// {
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// mapExternalFields();
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// RuntimeException e = new RuntimeException("Recalculamos los campos de recordset!!");
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// e.printStackTrace();
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// }
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if (mapping.length!=dataSource.getFieldCount()){
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mapExternalFields(); |
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} |
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return mapping.length;
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} |
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/**
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* Return index field searching by its name
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*
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* @param arg0 field name.
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*
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* @return field index. -1 if not found
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*
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* @throws DriverException
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* @throws FieldNotFoundException
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*/
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public int getFieldIndexByName(String arg0) |
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throws ReadDriverException {
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// int internal = dataSource.getFieldIndexByName(arg0);
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// for (int i=0; i < mapping.length; i++)
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// {
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// if (mapping[i] == internal)
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// return i;
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// }
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// //OJO Parche para rodear poblema de gdbms + FileDriver
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// // Cuando en le fichero existe un campo de nombre 'PK'
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// if (arg0.equalsIgnoreCase("pk")){
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// for (int i=0; i < mapping.length; i++)
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// {
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// if (dataSource.getFieldName(mapping[i]).equalsIgnoreCase(arg0)){
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// return i;
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// }
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// }
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//
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// }
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for (int i=0; i < getFieldCount(); i++) { |
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// Buscamos en los alias. Si no hay alias, cada alias es igual al fieldname
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if (getFieldAlias(i).compareTo(arg0) == 0) |
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return i;
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} |
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for (int i=0; i < getFieldCount(); i++) { |
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// Por compatibilidad con posibles leyendas guardadas
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if (getFieldName(i).compareTo(arg0) == 0) |
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return i;
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} |
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return -1; |
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} |
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/**
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* Devuelve el nombre del campo a partir del ?ndice.
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*
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* @param arg0 ?ndice.
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*
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* @return nombre del campo.
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*
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* @throws DriverException
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*/
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public String getFieldName(int arg0) throws ReadDriverException { |
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// return dataSource.getFieldName(arg0);
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return dataSource.getFieldName(mapping[arg0]);
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} |
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/**
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* Devuelve el valor a partir del n?mro de fila y columna.
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*
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* @param arg0 n?mero de registro.
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* @param arg1 n?mero de campo.
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*
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* @return Valor.
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*
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* @throws DriverException
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*/
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public Value getFieldValue(long arg0, int arg1) throws ReadDriverException { |
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if (arg1==-1) |
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return null; |
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return dataSource.getFieldValue(arg0, mapping[arg1]);
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// return dataSource.getFieldValue(arg0, arg1);
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} |
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/**
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* Devuelve el nombre del DataSource.
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*
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* @return Nombre.
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*/
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public String getName() { |
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return dataSource.getName();
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} |
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/**
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* Devuelve el n?mero de filas en total.
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*
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* @return n?mero de filas.
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*
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* @throws DriverException
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*/
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public long getRowCount() throws ReadDriverException { |
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return dataSource.getRowCount();
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} |
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/**
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* Inicializa el dataSource.
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*
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* @throws DriverException
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*/
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public void start() throws ReadDriverException { |
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// logger.debug("dataSource.start()");
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dataSource.start(); |
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} |
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/**
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* Finaliza el DataSource.
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*
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* @throws DriverException
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*/
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public void stop() throws ReadDriverException { |
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// logger.debug("dataSource.stop()");
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dataSource.stop(); |
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} |
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/**
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* A partir del XMLEntity se rellenan los atributos del DataSource.
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*
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* @param child
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*/
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public void setXMLEntity03(XMLEntity child) { |
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selectionSupport.setXMLEntity(child.getChild(0));
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} |
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/**
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* Cuando ocurre un evento de cambio en la selecci?n, ?ste puede ser uno de
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* una gran cantidad de eventos. Con el fin de no propagar todos estos
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* eventos, se realiza la propagaci?n de manera manual al final de la
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* "r?faga" de eventos
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*/
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public void fireSelectionEvents() { |
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selectionSupport.fireSelectionEvents(); |
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} |
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/**
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* A?ade un nuevo Listener al SelectionSupport.
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*
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* @param listener SelectionListener.
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*/
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public void addSelectionListener(SelectionListener listener) { |
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selectionSupport.addSelectionListener(listener); |
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} |
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/**
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* Borra un Listener al SelectionSupport.
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*
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* @param listener Listener a borrar.
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*/
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public void removeSelectionListener(SelectionListener listener) { |
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selectionSupport.removeSelectionListener(listener); |
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} |
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/**
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* Borra la selecci?n.
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*/
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public void clearSelection() { |
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selectionSupport.clearSelection(); |
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} |
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/**
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* Develve un FBitSet con los ?ndices de los elementos seleccionados.
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*
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* @return FBitset con los elementos seleccionados.
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*/
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public FBitSet getSelection() {
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return selectionSupport.getSelection();
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} |
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/**
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* Devuelve el SelectionSupport.
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*
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* @return SelectinSuport.
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*/
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public SelectionSupport getSelectionSupport() {
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return selectionSupport;
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} |
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/**
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* Devuelve true si el elemento est? seleccionado.
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*
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* @param recordIndex ?ndice del registro.
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*
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* @return True si el registro est? seleccionado.
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*/
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public boolean isSelected(int recordIndex) { |
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return selectionSupport.isSelected(recordIndex);
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} |
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/**
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* Inserta una nueva selecci?n.
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*
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* @param selection FBitSet.
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*/
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public void setSelection(FBitSet selection) { |
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selectionSupport.setSelection(selection); |
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} |
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private void putMemento(XMLEntity xml) throws XMLException { |
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try {
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GDBMSHandler handler = new GDBMSHandler();
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Memento m = getMemento(); |
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m.setContentHandler(handler); |
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m.getXML(); |
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XMLEntity child = handler.getXMLEntity(); |
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xml.addChild(child); |
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} catch (MementoException e) {
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throw new XMLException(e); |
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} catch (SAXException e) {
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throw new XMLException(e); |
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} |
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} |
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/**
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* Devuelve el XMLEntity con la informaci?n necesaria para reproducir el
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* DataSource.
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*
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* @return XMLEntity.
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* @throws XMLException
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*/
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public XMLEntity getXMLEntity() throws XMLException { |
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XMLEntity xml = new XMLEntity();
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xml.putProperty("className",this.getClass().getName()); |
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xml.addChild(selectionSupport.getXMLEntity()); |
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putMemento(xml); |
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return xml;
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} |
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/**
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* @see com.hardcode.gdbms.engine.data.DataSource#getWhereFilter()
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*/
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public long[] getWhereFilter() throws IOException { |
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return dataSource.getWhereFilter();
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} |
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/*
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* @see com.hardcode.gdbms.engine.data.ReadDriver#getFieldType(int)
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*/
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public int getFieldType(int i) throws ReadDriverException { |
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// return dataSource.getFieldType(i);
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if (i>mapping.length-1) |
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return dataSource.getFieldType(i);
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return dataSource.getFieldType(mapping[i]);
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} |
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getDataSourceFactory()
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*/
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public DataSourceFactory getDataSourceFactory() {
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return dataSource.getDataSourceFactory();
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} |
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|
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getAsString()
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*/
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public String getAsString() throws ReadDriverException { |
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return dataSource.getAsString();
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} |
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/*
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* @throws DriverException
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* @see com.hardcode.gdbms.engine.data.DataSource#remove()
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*/
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public void remove() throws WriteDriverException { |
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dataSource.remove(); |
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} |
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getMemento()
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*/
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public Memento getMemento() throws MementoException { |
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return dataSource.getMemento();
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} |
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|
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getSourceInfo()
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*/
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public SourceInfo getSourceInfo() {
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return dataSource.getSourceInfo();
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} |
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|
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getPrimaryKeys()
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*/
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public int[] getPrimaryKeys() throws ReadDriverException { |
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return dataSource.getPrimaryKeys();
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} |
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|
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getPKValue(long)
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*/
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public ValueCollection getPKValue(long rowIndex) throws ReadDriverException { |
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return dataSource.getPKValue(rowIndex);
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} |
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getPKName(int)
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*/
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public String getPKName(int fieldId) throws ReadDriverException { |
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return dataSource.getPKName(fieldId);
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} |
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getPKType(int)
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*/
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public int getPKType(int i) throws ReadDriverException { |
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return dataSource.getPKType(i);
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} |
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|
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/*
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* @throws DriverException
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* @see com.hardcode.gdbms.engine.data.DataSource#getPKCardinality()
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*/
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public int getPKCardinality() throws ReadDriverException { |
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return dataSource.getPKCardinality();
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} |
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|
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/*
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* @see com.hardcode.gdbms.engine.data.DataSource#getRow(long)
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*/
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public Value[] getRow(long rowIndex) throws ReadDriverException { |
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Value[] withoutVirtuals = new Value[mapping.length]; |
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Value[] internal = dataSource.getRow(rowIndex);
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for (int i=0; i < mapping.length; i++) |
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{ |
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if (mapping[i] < internal.length)
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withoutVirtuals[i] = internal[mapping[i]]; |
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537 |
} |
538 |
return withoutVirtuals;
|
539 |
} |
540 |
|
541 |
/*
|
542 |
* @see com.hardcode.gdbms.engine.data.DataSource#getFieldNames()
|
543 |
*/
|
544 |
public String[] getFieldNames() throws ReadDriverException { |
545 |
int fieldCount=getFieldCount();
|
546 |
String[] fieldNames = new String[fieldCount]; |
547 |
// int j=0;
|
548 |
// int fieldCount=dataSource.getFieldCount();
|
549 |
// for (int i=0; i < fieldCount; i++)
|
550 |
// {
|
551 |
// if (!dataSource.isVirtualField(i))
|
552 |
// fieldNames[j++] = dataSource.getFieldName(i);
|
553 |
//
|
554 |
// }
|
555 |
for (int i=0; i < fieldCount; i++) |
556 |
{ |
557 |
fieldNames[i] = getFieldAlias(i); |
558 |
|
559 |
} |
560 |
|
561 |
return fieldNames;
|
562 |
} |
563 |
|
564 |
/*
|
565 |
* @see com.hardcode.gdbms.engine.data.DataSource#getPKNames()
|
566 |
*/
|
567 |
public String[] getPKNames() throws ReadDriverException { |
568 |
return dataSource.getPKNames();
|
569 |
} |
570 |
|
571 |
public void removeLinksSelectionListener() { |
572 |
selectionSupport.removeLinkSelectionListener(); |
573 |
} |
574 |
|
575 |
/*
|
576 |
* @throws DriverException
|
577 |
* @see com.hardcode.gdbms.engine.data.DataSource#getDataWare(int)
|
578 |
*/
|
579 |
public DataWare getDataWare(int arg0) throws ReadDriverException { |
580 |
return dataSource.getDataWare(arg0);
|
581 |
} |
582 |
|
583 |
public int getFieldWidth(int i) throws ReadDriverException { |
584 |
return dataSource.getFieldWidth(mapping[i]);
|
585 |
// return dataSource.getFieldWidth(i);
|
586 |
} |
587 |
|
588 |
public boolean isVirtualField(int fieldId) throws ReadDriverException { |
589 |
return dataSource.isVirtualField(fieldId);
|
590 |
} |
591 |
|
592 |
/**
|
593 |
* Useful to writers, to know the field definitions.
|
594 |
* NOTE: Maximun precision: 6 decimals. (We may need to change this)
|
595 |
* @return Description of non virtual fields
|
596 |
* @throws DriverException
|
597 |
*/
|
598 |
public FieldDescription[] getFieldsDescription() throws ReadDriverException{ |
599 |
int numFields = getFieldCount();
|
600 |
FieldDescription[] fieldsDescrip = new FieldDescription[numFields]; |
601 |
for (int i = 0; i < numFields; i++) { |
602 |
fieldsDescrip[i] = new FieldDescription();
|
603 |
int type = getFieldType(i);
|
604 |
fieldsDescrip[i].setFieldType(type); |
605 |
fieldsDescrip[i].setFieldName(getFieldName(i)); |
606 |
fieldsDescrip[i].setFieldLength(getFieldWidth(i)); |
607 |
fieldsDescrip[i].setFieldAlias(getFieldAlias(i)); |
608 |
if (NumberUtilities.isNumeric(type))
|
609 |
{ |
610 |
if (!NumberUtilities.isNumericInteger(type))
|
611 |
// TODO: If there is a lost in precision, this should be changed.
|
612 |
fieldsDescrip[i].setFieldDecimalCount(6);
|
613 |
} |
614 |
else
|
615 |
fieldsDescrip[i].setFieldDecimalCount(0);
|
616 |
// TODO: ?DEFAULTVALUE?
|
617 |
// fieldsDescrip[i].setDefaultValue(get)
|
618 |
} |
619 |
return fieldsDescrip;
|
620 |
} |
621 |
|
622 |
public String getFieldAlias(int i) { |
623 |
return alias[i];
|
624 |
} |
625 |
public void setFieldAlias(int idField, String aliasName) { |
626 |
alias[idField] = aliasName; |
627 |
} |
628 |
|
629 |
|
630 |
public Driver getDriver() { |
631 |
return this.dataSource.getDriver(); |
632 |
} |
633 |
|
634 |
public void reload() throws ReloadDriverException { |
635 |
dataSource.reload(); |
636 |
try {
|
637 |
mapExternalFields(); |
638 |
} catch (ReadDriverException e) {
|
639 |
throw new ReloadDriverException(getDriver().getName(),e); |
640 |
} |
641 |
|
642 |
} |
643 |
|
644 |
public void addDataSourceListener(IDataSourceListener listener) { |
645 |
dataSource.addDataSourceListener(listener); |
646 |
|
647 |
} |
648 |
|
649 |
public void removeDataSourceListener(IDataSourceListener listener) { |
650 |
dataSource.removeDataSourceListener(listener); |
651 |
|
652 |
} |
653 |
} |