svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.plugin / org.gvsig.app / org.gvsig.app.mainplugin / src / main / java / org / gvsig / app / extension / FiltroExtension.java @ 41258
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 3 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us at info AT
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* gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.app.extension; |
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import java.util.Iterator; |
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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.app.ApplicationLocator; |
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import org.gvsig.app.ApplicationManager; |
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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.view.ViewDocument; |
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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.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureSelection; |
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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.fmap.mapcontext.layers.FLayer; |
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import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect; |
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import org.gvsig.i18n.Messages; |
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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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private String filterTitle; |
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public void initialize() { |
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IconThemeHelper.registerIcon("action", "layer-filter", this); |
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} |
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public void execute(String actionCommand) { |
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if ("layer-filter".equalsIgnoreCase(actionCommand)) { |
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ApplicationManager application = ApplicationLocator.getManager(); |
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ViewDocument document = (ViewDocument) application.getActiveDocument(ViewDocument.class); |
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if (document == null) { |
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return;
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} |
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filterTitle = document.getName(); |
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FLayer layer = document.getMapContext().getLayers().getActives()[0];
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featureStore = ((FLyrVect) layer).getFeatureStore(); |
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document.setModified(true);
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doExecute(); |
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} |
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} |
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/**
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* "execute" method action.
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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 true; |
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} |
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public boolean isVisible() { |
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ApplicationManager application = ApplicationLocator.getManager(); |
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ViewDocument document = (ViewDocument) application.getActiveDocument(ViewDocument.class); |
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if (document == null) { |
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return false; |
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} |
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return document.getMapContext().hasActiveVectorLayers();
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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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// throw new RuntimeException("Not a 'where' clause?");
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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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ApplicationLocator.getManager().getRootComponent(), |
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Messages.getText("expresion_error") + ":\n" |
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+ getLastMessage(e), |
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Messages.getText("expresion_error"),
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JOptionPane.ERROR_MESSAGE);
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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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// throw new RuntimeException("Not a 'where' clause?");
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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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FeatureSet set = null;
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set = doSet(expression); |
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if (set == null) { |
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throw new RuntimeException("Not a 'where' clause?"); |
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} |
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FeatureSelection oldSelection |
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= featureStore.getFeatureSelection(); |
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FeatureSelection newSelection |
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= featureStore.createFeatureSelection(); |
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Iterator iterator = set.iterator();
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while (iterator.hasNext()) {
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Feature feature = (Feature) iterator.next(); |
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if (oldSelection.isSelected(feature)) {
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newSelection.select(feature); |
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} |
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} |
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featureStore.setSelection(newSelection); |
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set.dispose(); |
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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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} 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 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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if (expression == null) { |
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return true; |
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} |
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String subExpression = expression.trim();
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if (subExpression.length() == 0) { |
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return true; |
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} |
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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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// + 5 is the length of 'where'
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subExpression = subExpression.substring(pos + 5, subExpression.length()).trim();
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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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private String getLastMessage(Throwable ex) { |
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Throwable p = ex;
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while (p.getCause() != null && p.getCause() != p) { |
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p = p.getCause(); |
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} |
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return p.getMessage();
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} |
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} |