/**
* OrbisGIS is a java GIS application dedicated to research in GIScience.
* OrbisGIS is developed by the GIS group of the DECIDE team of the
* Lab-STICC CNRS laboratory, see <http://www.lab-sticc.fr/>.
*
* The GIS group of the DECIDE team is located at :
*
* Laboratoire Lab-STICC – CNRS UMR 6285
* Equipe DECIDE
* UNIVERSITÉ DE BRETAGNE-SUD
* Institut Universitaire de Technologie de Vannes
* 8, Rue Montaigne - BP 561 56017 Vannes Cedex
*
* OrbisGIS is distributed under GPL 3 license.
*
* Copyright (C) 2007-2014 CNRS (IRSTV FR CNRS 2488)
* Copyright (C) 2015-2017 CNRS (Lab-STICC UMR CNRS 6285)
*
* This file is part of OrbisGIS.
*
* OrbisGIS 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 3 of the License, or (at your option) any later
* version.
*
* OrbisGIS 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
* OrbisGIS. If not, see <http://www.gnu.org/licenses/>.
*
* For more information, please consult: <http://www.orbisgis.org/>
* or contact directly:
* info_at_ orbisgis.org
*/
package org.orbisgis.geocatalogtree.impl.jobs;
import java.awt.Component;
import java.beans.EventHandler;
import java.beans.PropertyChangeListener;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashSet;
import java.util.List;
import javax.sql.DataSource;
import org.h2gis.utilities.JDBCUtilities;
import org.jooq.DSLContext;
import org.jooq.conf.RenderNameStyle;
import org.jooq.conf.Settings;
import org.jooq.impl.DSL;
import org.orbisgis.commons.progress.ProgressMonitor;
import org.orbisgis.commons.progress.SwingWorkerPM;
import org.orbisgis.dbjobs.api.DatabaseView;
import org.orbisgis.sif.components.SQLMessageDialog;
import org.orbisgis.geocatalogtree.impl.nodes.TableAndField;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xnap.commons.i18n.I18n;
import org.xnap.commons.i18n.I18nFactory;
/**
* Drop the selected columns on the same table
* @author Erwan Bocher
*/
public class DropColumn extends SwingWorkerPM{
private static final I18n I18N = I18nFactory.getI18n(DropColumn.class);
private static final Logger LOGGER = LoggerFactory.getLogger(DropColumn.class);
private List<TableAndField> indexIdentifier;
private DatabaseView dbView;
private DataSource dataSource;
public DropColumn(List<TableAndField> indexIdentifier, DatabaseView dbView, DataSource dataSource) {
super(indexIdentifier.size());
this.indexIdentifier = indexIdentifier;
this.dbView = dbView;
this.dataSource = dataSource;
setTaskName(I18N.tr("Drop column"));
}
@Override
protected Object doInBackground() throws Exception {
try (Connection connection = dataSource.getConnection();
Statement st = connection.createStatement()) {
PropertyChangeListener listener = EventHandler.create(PropertyChangeListener.class, st, "cancel");
getProgressMonitor().addPropertyChangeListener(ProgressMonitor.PROP_CANCEL, listener);
try {
String query = getSQLDropColumn(connection, indexIdentifier);
LOGGER.info(I18N.tr("Execute drop index command:\n{0}", query));
st.execute(query);
} finally {
getProgressMonitor().removePropertyChangeListener(listener);
}
} catch (SQLException ex) {
LOGGER.error(ex.getLocalizedMessage(), ex);
}
return null;
}
/**
* Return the SQL representation of drop column
* @param connection
* @param indexIdentifier
* @return
* @throws SQLException
*/
private static String getSQLDropColumn(Connection connection, List<TableAndField> indexIdentifier) throws SQLException {
StringBuilder query = new StringBuilder();
DSLContext dslContext = DSL.using(connection, new Settings().withRenderNameStyle(RenderNameStyle.AS_IS));
boolean isH2 = JDBCUtilities.isH2DataBase(connection.getMetaData());
for (TableAndField tableAndField : indexIdentifier) {
if( query.length()>0 ) {
query.append("\n");
}
query.append(dslContext.alterTable(tableAndField.getTable()).drop(tableAndField.getFieldName()).getSQL());
query.append(";");
}
return query.toString();
}
public static DropColumn onMenuDropColumn(DataSource dataSource, List<TableAndField> indexIdentifier, Component parentComponent, DatabaseView dbView) throws SQLException {
if(indexIdentifier.isEmpty()) {
return null;
}
String query;
try(Connection connection = dataSource.getConnection()) {
query = getSQLDropColumn(connection, indexIdentifier);
}
String message = I18N.tr("Are you sure to drop the selected column ?");
SQLMessageDialog.CHOICE option = SQLMessageDialog.showModal(null,I18N.tr("Drop column"), message, query);
if(option==SQLMessageDialog.CHOICE.OK){
return new DropColumn(indexIdentifier, dbView, dataSource);
}
else{
return null;
}
}
@Override
protected void done() {
HashSet<String> tables = new HashSet<>();
for (TableAndField tableAndField : indexIdentifier) {
tables.add(tableAndField.getTable());
}
dbView.onDatabaseUpdate(DatabaseView.DB_ENTITY.INDEX.toString(),
tables.toArray(new String[tables.size()]));
}
@Override
public String toString() {
return I18N.tr("Dropping column");
}
}