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
12 * of those above. If you wish to allow use of your version of this file only
13 * under the terms of the LGPL, and not to allow others to use your version of
14 * this file under the terms of the EPL, indicate your decision by deleting
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16 * required by the LGPL. If you do not delete the provisions above, a recipient
17 * may use your version of this file under the terms of the EPL or the LGPL.
18 *******************************************************************************/
19 package org.sat4j.csp.constraints;
20
21 import org.sat4j.csp.Encoding;
22 import org.sat4j.csp.Var;
23 import org.sat4j.csp.encodings.BinarySupportEncoding;
24 import org.sat4j.csp.encodings.DirectEncoding;
25 import org.sat4j.specs.IVec;
26
27 public class GentSupports extends Supports {
28
29 public GentSupports(int arity, int nbtuples) {
30 super(arity, nbtuples);
31 }
32
33 @Override
34 protected Encoding chooseEncoding(IVec<Var> scope) {
35 if (scope.size() == 2) {
36 return BinarySupportEncoding.instance();
37 }
38 return DirectEncoding.instance();
39 }
40
41 }