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