001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_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 }