1 /*******************************************************************************
2 * SAT4J: a SATisfiability library for Java Copyright (C) 2004, 2012 Artois University and CNRS
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
15 * the provisions above and replace them with the notice and other provisions
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 * Based on the original MiniSat specification from:
20 *
21 * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
22 * Sixth International Conference on Theory and Applications of Satisfiability
23 * Testing, LNCS 2919, pp 502-518, 2003.
24 *
25 * See www.minisat.se for the original solver in C++.
26 *
27 * Contributors:
28 * CRIL - initial API and implementation
29 *******************************************************************************/
30
31 package org.sat4j.pb.constraints;
32
33 import java.math.BigInteger;
34
35 import org.sat4j.core.Vec;
36 import org.sat4j.core.VecInt;
37 import org.sat4j.minisat.constraints.card.MinWatchCard;
38 import org.sat4j.minisat.core.Constr;
39 import org.sat4j.minisat.core.ILits;
40 import org.sat4j.minisat.core.UnitPropagationListener;
41 import org.sat4j.pb.constraints.pb.IDataStructurePB;
42 import org.sat4j.specs.ContradictionException;
43 import org.sat4j.specs.IVec;
44 import org.sat4j.specs.IVecInt;
45
46 public class MinCardConstructor implements ICardConstructor {
47
48 public Constr constructCard(UnitPropagationListener solver, ILits voc,
49 IVecInt theLits, int degree) throws ContradictionException {
50 return MinWatchCard.minWatchCardNew(solver, voc, theLits,
51 MinWatchCard.ATLEAST, degree);
52 }
53
54 public Constr constructLearntCard(ILits voc, IDataStructurePB dspb) {
55 IVecInt resLits = new VecInt();
56 IVec<BigInteger> resCoefs = new Vec<BigInteger>();
57 dspb.buildConstraintFromConflict(resLits, resCoefs);
58 return new MinWatchCard(voc, resLits, true, dspb.getDegree().intValue());
59 }
60
61 }