/* Triple.java * * Copyright (c) 2003, Tuomas J. Lukka * * This file is part of Gzz. * * Gzz is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * Gzz is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General * Public License for more details. * * You should have received a copy of the GNU Lesser General * Public License along with Gzz; if not, write to the Free * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * * */ /* * Written by Tuomas J. Lukka */ package org.fenfire.util; /** A Triple, useful as a hash key. */ public class Triple { public final Object first; public final Object second; public final Object third; public Triple(Object first, Object second, Object third) { this.first = first; this.second = second; this.third = third; } public int hashCode() { return (first == null ? 23472861 : first.hashCode()*317501) ^ (second == null ? 97124109 : second.hashCode()*1941) ^ (third == null ? 1875919 : third.hashCode()*87156) ; } public boolean equals(Object o) { if(!(o instanceof Triple)) return false; Triple p = (Triple)o; if((first == null && p.first != null) || !first.equals(p.first) || (second == null && p.second != null)|| !second.equals(p.second) || (third == null && p.third != null) || !third.equals(p.third) ) return false; return true; } }