/* ==========================================
* 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.
*/
/* -----------------
* IntegerVertexFactory.java
* -----------------
* (C) Copyright 2005-2008, by Assaf Lehr and Contributors.
*
* Original Author: Assaf Lehr
* Contributor(s): -
*
* $Id$
*
* Changes
* -------
*/
package org.jgrapht.experimental.isomorphism;
import org.jgrapht.*;
/**
* Implements createVertex() by producing a sequence of Integers; their values
* start with the successor to the constructor value.
*
* <p>for example : IntegerVertexFactory(10); the first createVertex() will
* return Integer=11
*
* @author Assaf
* @since May 25, 2005
*/
public class IntegerVertexFactory
implements VertexFactory<Integer>
{
//~ Instance fields --------------------------------------------------------
private int counter;
//~ Constructors -----------------------------------------------------------
/**
* Equivalent to IntegerVertexFactory(0);
*
* @author Assaf
* @since Aug 6, 2005
*/
public IntegerVertexFactory()
{
this(0);
}
public IntegerVertexFactory(int oneBeforeFirstValue)
{
this.counter = oneBeforeFirstValue;
}
//~ Methods ----------------------------------------------------------------
public Integer createVertex()
{
this.counter++;
return new Integer(this.counter);
}
}
// End IntegerVertexFactory.java