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;

import java.awt.Component;

import java.awt.Dimension;

import javax.swing.JOptionPane;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataTypes;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.DisposableIterator;

import org.gvsig.fmap.dal.feature.Feature;

import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor;

import org.gvsig.fmap.dal.feature.FeatureQuery;

import org.gvsig.fmap.dal.feature.FeatureSelection;

import org.gvsig.fmap.dal.feature.FeatureSet;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.project.document.table.FeatureTableDocument;

import org.gvsig.project.document.table.FeatureTableDocumentFactory;

import org.gvsig.project.document.table.gui.FeatureTableDocumentPanel;

import org.opengis.feature.FeatureCollection;

import com.iver.andami.PluginServices;

import com.iver.andami.messages.NotificationManager;

import com.iver.andami.plugins.Extension;

import com.iver.andami.ui.mdiManager.IWindow;

import com.iver.cit.gvsig.gui.filter.ExpressionListener;

import com.iver.cit.gvsig.project.documents.gui.AndamiWizard;

import com.iver.cit.gvsig.project.documents.gui.ObjectSelectionStep;

import com.iver.cit.gvsig.project.documents.table.FieldSelectionModel;

import com.iver.cit.gvsig.project.documents.table.TableSelectionModel;

import com.iver.utiles.swing.objectSelection.SelectionException;

import com.iver.utiles.swing.wizard.WizardControl;

import com.iver.utiles.swing.wizard.WizardEvent;

import com.iver.utiles.swing.wizard.WizardListener;

/**

 * Extensi?n que controla las operaciones realizadas sobre las tablas.

 *

 * @author Fernando Gonz?lez Cort?s

 */

public class TableOperations extends Extension implements ExpressionListener {

        private FeatureStore featureStore = null;

        /**

         * @see com.iver.mdiApp.plugins.IExtension#updateUI(java.lang.String)

         */

        public void execute(String actionCommand) {

                ProjectExtension pe = (ProjectExtension) PluginServices.getExtension(ProjectExtension.class);

                com.iver.cit.gvsig.project.Project project=pe.getProject();

                FeatureTableDocument[] pts = project.getDocumentsByType(FeatureTableDocumentFactory.registerName)

                .toArray(new FeatureTableDocument[0]);

                if ("LINK".equals(actionCommand)) {

                        try {

                                final ObjectSelectionStep sourceTable = new ObjectSelectionStep();

                                sourceTable.setModel(new TableSelectionModel(pts,

                                                PluginServices.getText(this, "seleccione_tabla_origen")));

                                final ObjectSelectionStep targetTable = new ObjectSelectionStep();

                                targetTable.setModel(new TableSelectionModel(pts,

                                                PluginServices.getText(this, "seleccione_tabla_a_enlazar")));

                                final ObjectSelectionStep firstTableField = new ObjectSelectionStep();

                                final ObjectSelectionStep secondTableField = new ObjectSelectionStep();

                                final AndamiWizard wiz = new AndamiWizard(PluginServices.getText(this, "back"), PluginServices.getText(this, "next"), PluginServices.getText(this, "finish"), PluginServices.getText(this, "cancel"));

                                wiz.setSize(new Dimension(450,200));

                                wiz.addStep(sourceTable);

                                wiz.addStep(firstTableField);

                                wiz.addStep(targetTable);

                                wiz.addStep(secondTableField);

                                wiz.addWizardListener(new WizardListener() {

                                        public void cancel(WizardEvent w) {

                                                PluginServices.getMDIManager().closeWindow(wiz);

                                        }

                                        public void finished(WizardEvent w) {

                                                PluginServices.getMDIManager().closeWindow(wiz);

                                                FeatureTableDocument sourceProjectTable = (FeatureTableDocument) sourceTable.getSelected();

                                                FeatureStore sds1 = sourceProjectTable.getStore();

                                                FeatureTableDocument targetProjectTable = (FeatureTableDocument) targetTable.getSelected();

                                                FeatureStore sds2 = targetProjectTable.getStore();

                                                String field1 = (String) firstTableField.getSelected();

                                                String field2 = (String) secondTableField.getSelected();

                                                sourceProjectTable.setLinkTable(sds2.getName(),field1,field2);

                                                ((ProjectExtension)PluginServices.getExtension(ProjectExtension.class)).getProject().setLinkTable();

                                        }

                                        public void next(WizardEvent w) {

                                                WizardControl wiz = w.wizard;

                                                wiz.enableBack(true);

                                                wiz.enableNext(((ObjectSelectionStep) wiz.getCurrentStep()).getSelectedItem() != null);

                                                if (w.currentStep == 1) {

                                                        FeatureTableDocument pt = (FeatureTableDocument) sourceTable.getSelected();

                                                        try {

                                                                firstTableField.setModel(new FieldSelectionModel(

                                                                                pt.getStore(),

                                                                                PluginServices.getText(this, "seleccione_campo_enlace"),

                                                                                DataTypes.STRING));

                                                        } catch (SelectionException e) {

                                                                NotificationManager.addError("Error obteniendo los campos de la tabla",

                                                                                e);

                                                        }

                                                } else if (w.currentStep == 3) {

                                                        try {

                                                                //tabla

                                                                FeatureTableDocument pt = (FeatureTableDocument) sourceTable.getSelected();

                                                                //?ndice del campo

                                                                FeatureStore fs = pt.getStore();

                                                                String fieldName = (String) firstTableField.getSelected();

                                                                int type = ((FeatureAttributeDescriptor)fs.getDefaultFeatureType().get(fieldName)).getDataType();

                                                                secondTableField.setModel(new FieldSelectionModel(

                                                                                ((FeatureTableDocument) targetTable

                                                                                                .getSelected())

                                                                                                .getStore(),

                                                                                                PluginServices.getText(this, "seleccione_campo_enlace"),

                                                                                                type));

                                                        } catch (SelectionException e) {

                                                                NotificationManager.addError("Error obteniendo los campos de la tabla",

                                                                                e);

                                                        } catch (DataException e) {

                                                                NotificationManager.addError("Error obteniendo los campos de la tabla",

                                                                                e);

                                                        }

                                                }

                                        }

                                        public void back(WizardEvent w) {

                                                WizardControl wiz = w.wizard;

                                                wiz.enableBack(true);

                                                wiz.enableNext(((ObjectSelectionStep) wiz.getCurrentStep()).getSelectedItem() != null);

                                        }

                                });

                                project.setModified(true);

                                PluginServices.getMDIManager().addWindow(wiz);

                        } catch (SelectionException e) {

                                NotificationManager.addError("Error abriendo el asistente", e);

                        }

                }

        }

        /**

         * @see com.iver.cit.gvsig.gui.filter.ExpressionListener#newSet(java.lang.String)

         */

        public void newSet(String expression) throws DataException {

                // By Pablo: if no filter expression -> no element selected

                if (! this.filterExpressionFromWhereIsEmpty(expression)) {

                        try {

                                FeatureSet set = doSet(expression);

                                if (set == null) {

                                        throw new RuntimeException("Not a 'where' clause?");

                                }

                                FeatureSelection newSel =featureStore.createFeatureSelection();

                                newSel.select(set);

                                featureStore.setSelection(newSel);

                                set.dispose();

                        }catch(Exception e){

                                JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(), "Asegurate de que la consulta es correcta.");

                        }

                }

                else {

                        // By Pablo: if no expression -> no element selected

                        featureStore.getFeatureSelection().deselectAll();

                }

        }

        /**

         * @see com.iver.cit.gvsig.gui.filter.ExpressionListener#newSet(java.lang.String)

         */

        private FeatureSet doSet(String expression) throws DataException {

                FeatureQuery query = featureStore.createFeatureQuery();

                query

                .setFilter(DALLocator.getDataManager().createExpresion(

                                expression));

                return featureStore.getFeatureSet(query);

        }

        /**

         * @see com.iver.cit.gvsig.gui.filter.ExpressionListener#addToSet(java.lang.String)

         */

        public void addToSet(String expression) throws DataException {

                // By Pablo: if no filter expression -> don't add more elements to set

                if (! this.filterExpressionFromWhereIsEmpty(expression)) {

                        FeatureSet set = null;

                        set = doSet(expression);

                        featureStore.getFeatureSelection().select(set);

                        set.dispose();

                }

        }

        /**

         * @see com.iver.cit.gvsig.gui.filter.ExpressionListener#fromSet(java.lang.String)

         */

        public void fromSet(String expression) throws DataException {

                // By Pablo: if no filter expression -> no element selected

                if (!this.filterExpressionFromWhereIsEmpty(expression)) {

                        FeatureSet set = null;

                        DisposableIterator iterator = null;

                        try {

                                set = doSet(expression);

                                if (set == null) {

                                        throw new RuntimeException("Not a 'where' clause?");

                                }

                                FeatureCollection oldSelection = (FeatureCollection) featureStore

                                .getSelection();

                                FeatureSelection newSelection = featureStore

                                .createFeatureSelection();

                                iterator = set.iterator();

                                while (iterator.hasNext()) {

                                        Feature feature = (Feature) iterator.next();

                                        if (oldSelection.contains(feature)) {

                                                newSelection.select(feature);

                                        }

                                }

                                featureStore.setSelection(newSelection);

                        } finally {

                                if (iterator != null){

                                        iterator.dispose();

                                }

                                if (set != null){

                                        set.dispose();

                                }

                        }

                } else {

                        // By Pablo: if no expression -> no element selected

                        featureStore.setSelection(featureStore.createSelection());

                }

        }

        /**

         * Returns true if the WHERE subconsultation of the filterExpression is empty ("")

         *

         * @author Pablo Piqueras Bartolom? (p_queras@hotmail.com)

         * @param expression An string

         * @return A boolean value

         */

        private boolean filterExpressionFromWhereIsEmpty(String expression) {

                String subExpression = expression.trim();

                int pos;

                // Remove last ';' if exists

                if (subExpression.charAt(subExpression.length() -1) == ';') {

                        subExpression = subExpression.substring(0, subExpression.length() -1).trim();

                }

                // If there is no 'where' clause

                if ((pos = subExpression.indexOf("where")) == -1) {

                        return false;

                }

                // If there is no subexpression in the WHERE clause -> true

                subExpression = subExpression.substring(pos + 5, subExpression.length()).trim(); // + 5 is the length of 'where'

                if ( subExpression.length() == 0 ) {

                        return true;

                } else {

                        return false;

                }

        }

        /**

         * @see com.iver.mdiApp.plugins.IExtension#isVisible()

         */

        public boolean isVisible() {

                IWindow v = PluginServices.getMDIManager().getActiveWindow();

                if (v == null) {

                        return false;

                }

                if (v instanceof FeatureTableDocumentPanel) {

                        return true;

                } /*else {

                        if (v instanceof com.iver.cit.gvsig.gui.View) {

                                com.iver.cit.gvsig.gui.View view = (com.iver.cit.gvsig.gui.View) v;

                                ProjectView pv = view.getModel();

                                FLayer[] seleccionadas = pv.getMapContext().getLayers()

                                                                                   .getActives();

                                if (seleccionadas.length == 1) {

                                        if (seleccionadas[0] instanceof AlphanumericData) {

                                                return true;

                                        }

                                }

                        }

                 */

                return false;

                //}

        }

        /**

         * @see com.iver.andami.plugins.IExtension#initialize()

         */

        public void initialize() {

                registerIcons();

                //                FIXME

                //                org.gvsig.fmap.data.feature.joinstore.Register.selfRegister();

        }

        private void registerIcons(){

                PluginServices.getIconTheme().registerDefault(

                                "table-join",

                                this.getClass().getClassLoader().getResource("images/tablejoin.png")

                );

                PluginServices.getIconTheme().registerDefault(

                                "table-link",

                                this.getClass().getClassLoader().getResource("images/tablelink.png")

                );

        }

        /**

         * @see com.iver.andami.plugins.IExtension#isEnabled()

         */

        public boolean isEnabled() {

                return true;

        }

        /**

         * Ensure that field name only has 'safe' characters

         * (no spaces, special characters, etc).

         */

        public String sanitizeFieldName(String fieldName) {

                return fieldName.replaceAll("\\W", "_"); // replace any non-word character by an underscore

        }

}