NumericalFieldsComboBox.java

/**
 * 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.view.toc.actions.cui.legend.components;

import org.orbisgis.corejdbc.MetaData;
import org.orbisgis.legend.LookupFieldName;

import javax.sql.DataSource;

/**
 * A JComboBox containing the numerical fields of the given {@link DataSource}.
 *
 * @author Adam Gouge
 */
public class NumericalFieldsComboBox extends AbsFieldsComboBox {

    protected NumericalFieldsComboBox(DataSource ds,String table,
                                      final LookupFieldName legend) {
        super(ds,table, legend);
    }

    @Override
    protected boolean canAddField(int index, int fieldTypeCode, String fieldTypeName) {
        return MetaData.isNumeric(fieldTypeCode);
    }

    /**
     * Create and initialize a new {@link NumericalFieldsComboBox}. This method
     * must be used rather than a standard constructor because we can't call the
     * {@link #init()} method in the constructor since this class is subclassed.
     *
     * @param ds     DataSource
     * @param legend Legend
     * @return A newly initialized numerical fields combo box (for Interval
     *         Classifications)
     */
    public static NumericalFieldsComboBox createInstance(
            DataSource ds,String table,
            final LookupFieldName legend) {
        NumericalFieldsComboBox box = new NumericalFieldsComboBox(ds,table, legend);
        box.init();
        return box;
    }
}