    001package org.cpsolver.ifs;
    002
    003import java.io.IOException;
    004import java.io.InputStream;
    005import java.util.Properties;
    006
    007/**
    008 * IFS common constants. <br>
    009 * <br>
    010 * Build number and release date are to be set by apache ant.
    011 *
    012 * @author  Tomáš Müller
    013 * @version IFS 1.3 (Iterative Forward Search)<br>
    014 *          Copyright (C) 2006 - 2014 Tomáš Müller<br>
    015 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    016 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    017 * <br>
    018 *          This library is free software; you can redistribute it and/or modify
    019 *          it under the terms of the GNU Lesser General Public License as
    020 *          published by the Free Software Foundation; either version 3 of the
    021 *          License, or (at your option) any later version. <br>
    022 * <br>
    023 *          This library is distributed in the hope that it will be useful, but
    024 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    025 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    026 *          Lesser General Public License for more details. <br>
    027 * <br>
    028 *          You should have received a copy of the GNU Lesser General Public
    029 *          License along with this library; if not see
    030 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
    031 */
    032public class Constants {
    033        private static Properties sProperties = null;
    034
    035        private static Properties getProperties() {
    036                if (sProperties == null) {
    037                        sProperties = new Properties();
    038                        InputStream in = Constants.class.getClassLoader().getResourceAsStream("cpsolver.version");
    039                        if (in != null) {
    040                                try {
    041                                        sProperties.load(in);
    042                                        in.close();
    043                                } catch (IOException e) {}
    044                        }
    045                }
    046                return sProperties;
    047        }
    048
    049    /**
    050     * Version
    051     * @return current solver version
    052     */
    053    public static String getVersion() {
    054        return getProperties().getProperty("project.version", "1.3");
    055    }
    056
    057    /**
    058     * Build number
    059     * @return current solver build number
    060     */
    061    public static String getBuildNumber() {
    062        return getProperties().getProperty("cpsolver.build_nbr", "?");
    063    }
    064
    065    /**
    066     * Release date
    067     * @return current solver release date
    068     */
    069    public static String getReleaseDate() {
    070        return getProperties().getProperty("cpsolver.rel_date", "?");
    071    }
    072}