1 /*******************************************************************************
2 * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2008 Daniel Le Berre
3 *
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
8 *
9 * Alternatively, the contents of this file may be used under the terms of
10 * either the GNU Lesser General Public License Version 2.1 or later (the
11 * "LGPL"), in which case the provisions of the LGPL are applicable instead
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13 * under the terms of the LGPL, and not to allow others to use your version of
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18 *******************************************************************************/
19 package org.sat4j.csp.constraints;
20
21 import org.sat4j.csp.Clausifiable;
22
23 /**
24 * A relation is a formula given in extension.
25 *
26 * @author daniel
27 *
28 */
29 public interface Relation extends Clausifiable {
30 void addTuple(int index, int[] tuple);
31
32 int arity();
33 }