    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/framework/util/Pair.java $
    002    /*----------------------------------------------------------------------------
    003     This file is part of deegree, http://deegree.org/
    004     Copyright (C) 2001-2009 by:
    005       Department of Geography, University of Bonn
    006     and
    007       lat/lon GmbH
    008
    009     This library is free software; you can redistribute it and/or modify it under
    010     the terms of the GNU Lesser General Public License as published by the Free
    011     Software Foundation; either version 2.1 of the License, or (at your option)
    012     any later version.
    013     This library is distributed in the hope that it will be useful, but WITHOUT
    014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
    016     details.
    017     You should have received a copy of the GNU Lesser General Public License
    018     along with this library; if not, write to the Free Software Foundation, Inc.,
    019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    020
    021     Contact information:
    022
    023     lat/lon GmbH
    024     Aennchenstr. 19, 53177 Bonn
    025     Germany
    026     http://lat-lon.de/
    027
    028     Department of Geography, University of Bonn
    029     Prof. Dr. Klaus Greve
    030     Postfach 1147, 53001 Bonn
    031     Germany
    032     http://www.geographie.uni-bonn.de/deegree/
    033
    034     e-mail: info@deegree.org
    035    ----------------------------------------------------------------------------*/
    036
    037    package org.deegree.framework.util;
    038
    039    /**
    040     * <code>Pair</code> is a convenience class, which pairs two objects.
    041     *
    042     * @author <a href="mailto:bezema@lat-lon.de">Rutger Bezema</a>
    043     *
    044     * @author last edited by: $Author: mschneider $
    045     *
    046     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    047     * @param <T>
    048     *            the first Object of the pair
    049     * @param <U>
    050     *            the second Object of the pair
    051     *
    052     */
    053
    054    public class Pair<T, U> {
    055        /**
    056         * first value of the pair.
    057         */
    058        public T first;
    059
    060        /**
    061         * second value of the pair.
    062         */
    063        public U second;
    064
    065        /**
    066         * @param first
    067         *            value of the pair.
    068         * @param second
    069         *            value of the pair.
    070         */
    071        public Pair( T first, U second ) {
    072            this.first = first;
    073            this.second = second;
    074        }
    075
    076        /**
    077         * Create a pair with null objects.
    078         */
    079        public Pair() {
    080            // nothing to do here
    081        }
    082
    083        @SuppressWarnings("unchecked")
    084        @Override
    085        public boolean equals( Object other ) {
    086            if ( other != null && other instanceof Pair ) {
    087                // what ever, unchecked.
    088                final Pair that = (Pair) other;
    089                return ( first == null ? that.first == null : first.equals( that.first ) )
    090                       && ( second == null ? that.second == null : second.equals( that.second ) );
    091            }
    092            return false;
    093        }
    094
    095        @Override
    096        public String toString() {
    097            return "<" + first + ", " + second + ">";
    098        }
    099
    100    }