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 package org.sat4j.pb.constraints;
31
32 import java.math.BigInteger;
33
34 import org.sat4j.minisat.core.Constr;
35 import org.sat4j.pb.constraints.pb.IDataStructurePB;
36 import org.sat4j.pb.constraints.pb.MaxWatchPb;
37 import org.sat4j.pb.constraints.pb.WatchPb;
38 import org.sat4j.specs.ContradictionException;
39
40 /**
41 * @author leberre To change the template for this generated type comment go to
42 * Window - Preferences - Java - Code Generation - Code and Comments
43 */
44 public class PBMaxDataStructure extends AbstractPBDataStructureFactory {
45
46 private static final long serialVersionUID = 1L;
47
48 /**
49 * @param literals
50 * @param coefs
51 * @param moreThan
52 * @param degree
53 * @return a counter-based PB constraint.
54 * @throws ContradictionException
55 */
56 @Override
57 protected Constr constraintFactory(int[] literals, BigInteger[] coefs,
58 BigInteger degree) throws ContradictionException {
59 // return MaxWatchPb.maxWatchPbNew(solver, getVocabulary(), literals,
60 // coefs, moreThan, degree);
61 return MaxWatchPb.normalizedMaxWatchPbNew(this.solver, getVocabulary(),
62 literals, coefs, degree,
63 AbstractPBClauseCardConstrDataStructure
64 .sumOfCoefficients(coefs));
65 }
66
67 /**
68 * @param literals
69 * @param weightedLits
70 * @param degree
71 * @return a counter-based PB constraint.
72 */
73 @Override
74 protected WatchPb learntConstraintFactory(IDataStructurePB dspb) {
75 return MaxWatchPb.normalizedWatchPbNew(getVocabulary(), dspb);
76 }
77
78 }