/*______________________________________________________________________________ * * Copyright 2005 Arnaud Bailly - NORSYS/LIFL * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * (1) Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * (2) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * (3) The name of the author may not be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * * Created on 1 avr. 2005 * */ package rationals.transformations; import java.util.Set; public class StatesCouple { public final Set sa; public final Set sb; final int hash; public StatesCouple(Set sa, Set sb) { this.sa = sa; this.sb = sb; this.hash = sa.hashCode() + sb.hashCode(); } /* * (non-Javadoc) * * @see java.lang.Object#equals(java.lang.Object) */ public boolean equals(Object obj) { StatesCouple sc = (StatesCouple) obj; return sc.sa.equals(sa) && sc.sb.equals(sb); } /* * (non-Javadoc) * * @see java.lang.Object#hashCode() */ public int hashCode() { return hash; } /* * (non-Javadoc) * * @see java.lang.Object#toString() */ public String toString() { return " < " + sa.toString() + "," + sb.toString() + " >"; } }