001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_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    }