org.jgrapht.experimental.equivalence.UniformEquivalenceComparator Maven / Gradle / Ivy
/* ==========================================
* JGraphT : a free Java graph-theory library
* ==========================================
*
* Project Info: http://jgrapht.sourceforge.net/
* Project Creator: Barak Naveh (http://sourceforge.net/users/barak_naveh)
*
* (C) Copyright 2003-2008, by Barak Naveh and Contributors.
*
* This program and the accompanying materials are dual-licensed under
* either
*
* (a) the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation, or (at your option) any
* later version.
*
* or (per the licensee's choosing)
*
* (b) the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation.
*/
/* -----------------
* UniformEquivalenceComparator.java
* -----------------
* (C) Copyright 2005-2008, by Assaf Lehr and Contributors.
*
* Original Author: Assaf Lehr
* Contributor(s): -
*
* $Id$
*
* Changes
* -------
*/
package org.jgrapht.experimental.equivalence;
/**
* This Equivalence comparator acts as if all elements are in one big global
* equivalence class. Useful when a comparator is needed, but there is no
* important difference between the elements. equivalenceCompare() always return
* true; equivalenceHashcode() always returns 0.
*
* @author Assaf
* @since Jul 21, 2005
*/
public class UniformEquivalenceComparator
implements EquivalenceComparator
{
/**
* Always returns true.
*
* @see EquivalenceComparator#equivalenceCompare(Object, Object, Object,
* Object)
*/
public boolean equivalenceCompare(
E arg1,
E arg2,
C context1,
C context2)
{
return true;
}
/**
* Always returns 0.
*
* @see EquivalenceComparator#equivalenceHashcode(Object, Object)
*/
public int equivalenceHashcode(E arg1, C context)
{
return 0;
}
}
// End UniformEquivalenceComparator.java