svn-gvsig-desktop / tags / v2_0_0_Build_2056 / extensions / org.gvsig.app.document.table.app / org.gvsig.app.document.table.app.mainplugin / src / main / java / org / gvsig / app / extension / FiltroExtension.java @ 39030
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.app.extension; |
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import java.awt.Component; |
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import javax.swing.JOptionPane; |
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import org.gvsig.andami.IconThemeHelper; |
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import org.gvsig.andami.PluginServices; |
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import org.gvsig.andami.messages.NotificationManager; |
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import org.gvsig.andami.plugins.Extension; |
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import org.gvsig.andami.ui.mdiManager.IWindow; |
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import org.gvsig.app.gui.filter.ExpressionListener; |
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import org.gvsig.app.gui.filter.FilterDialog; |
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import org.gvsig.app.project.documents.table.gui.FeatureTableDocumentPanel; |
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import org.gvsig.fmap.dal.DALLocator; |
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import org.gvsig.fmap.dal.DataManager; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureSet; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.utils.exceptionHandling.ExceptionListener; |
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/**
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* Extensi?n que abre un di?logo para poder hacer un filtro de una capa o tabla.
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*
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* @author Vicente Caballero Navarro
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*/
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public class FiltroExtension extends Extension implements ExpressionListener { |
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protected FeatureStore featureStore = null; |
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protected FeatureTableDocumentPanel table;
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private String filterTitle; |
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public void initialize() { |
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registerIcons(); |
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} |
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private void registerIcons() { |
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IconThemeHelper.registerIcon("action", "table-filter", this); |
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} |
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public void execute(String actionCommand) { |
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if ("table-filter".equals(actionCommand)) { |
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IWindow v = PluginServices.getMDIManager().getActiveWindow(); |
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if (v instanceof FeatureTableDocumentPanel) { |
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table = (FeatureTableDocumentPanel) v; |
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featureStore = table.getModel().getStore(); |
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filterTitle = table.getModel().getName(); |
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table.getModel().setModified(true);
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} |
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doExecute(); |
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} |
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} |
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protected void doExecute() { |
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FilterDialog dlg = new FilterDialog(filterTitle);
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dlg.addExpressionListener(this);
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dlg.addExceptionListener(new ExceptionListener() { |
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public void exceptionThrown(Throwable t) { |
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NotificationManager.addError(t.getMessage(), t); |
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} |
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}); |
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dlg.setModel(featureStore); |
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PluginServices.getMDIManager().addWindow(dlg); |
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} |
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public boolean isEnabled() { |
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return isVisible();
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} |
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public boolean isVisible() { |
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IWindow v = PluginServices.getMDIManager().getActiveWindow(); |
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return (v instanceof FeatureTableDocumentPanel); |
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} |
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// By Pablo: if no filter expression -> no element selected
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public void newSet(String expression) throws DataException { |
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if (!this.filterExpressionFromWhereIsEmpty(expression)) { |
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FeatureSet set = null;
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try {
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set = doSet(expression); |
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if (set == null) { |
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return;
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} |
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featureStore.setSelection(set); |
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} catch (Exception e) { |
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JOptionPane.showMessageDialog(
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(Component) PluginServices.getMainFrame(),
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"Asegurate de que la consulta es correcta.");
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} finally {
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if (set != null) { |
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set.dispose(); |
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} |
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} |
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} else {
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// By Pablo: if no expression -> no element selected
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featureStore.getFeatureSelection().deselectAll(); |
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} |
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} |
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private FeatureSet doSet(String expression) throws DataException { |
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FeatureQuery query = featureStore.createFeatureQuery(); |
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DataManager manager = DALLocator.getDataManager(); |
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query.setFilter(manager.createExpresion(expression)); |
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return featureStore.getFeatureSet(query);
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} |
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public void addToSet(String expression) throws DataException { |
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// By Pablo: if no filter expression -> don't add more elements to set
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if (!this.filterExpressionFromWhereIsEmpty(expression)) { |
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FeatureSet set = null;
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try {
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set = doSet(expression); |
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if (set == null) { |
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return;
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} |
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featureStore.getFeatureSelection().select(set); |
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} finally {
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if (set != null) { |
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set.dispose(); |
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} |
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} |
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} |
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} |
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public void fromSet(String expression) throws DataException { |
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// By Pablo: if no filter expression -> no element selected
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try {
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if (!this.filterExpressionFromWhereIsEmpty(expression)) { |
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NotificationManager.showMessageInfo("Falta por implementar",
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null);
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} else {
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// By Pablo: if no expression -> no element selected
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featureStore.getFeatureSelection().deselectAll(); |
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} |
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} catch (DataException e) {
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NotificationManager.addError(e); |
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} |
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} |
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/**
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* Returns true if the WHERE subconsultation of the filterExpression is
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* empty ("")
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*
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* @author Pablo Piqueras Bartolom? (p_queras@hotmail.com)
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* @param expression
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* An string
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* @return A boolean value
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*/
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private boolean filterExpressionFromWhereIsEmpty(String expression) { |
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String subExpression = expression.trim();
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int pos;
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// Remove last ';' if exists
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if (subExpression.charAt(subExpression.length() - 1) == ';') { |
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subExpression = |
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subExpression.substring(0, subExpression.length() - 1).trim(); |
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} |
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// If there is no 'where' clause
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if ((pos = subExpression.indexOf("where")) == -1) { |
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return false; |
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} |
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// If there is no subexpression in the WHERE clause -> true
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subExpression = |
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subExpression.substring(pos + 5, subExpression.length()).trim(); // + |
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// 5
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// is
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// the
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// length
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// of
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// 'where'
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if (subExpression.length() == 0) { |
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return true; |
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} else {
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return false; |
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} |
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} |
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} |