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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.core.Vec;
35  import org.sat4j.core.VecInt;
36  import org.sat4j.minisat.core.Constr;
37  import org.sat4j.minisat.core.ILits;
38  import org.sat4j.pb.constraints.pb.AtLeastPB;
39  import org.sat4j.pb.constraints.pb.IDataStructurePB;
40  import org.sat4j.specs.ContradictionException;
41  import org.sat4j.specs.IVec;
42  import org.sat4j.specs.IVecInt;
43  import org.sat4j.specs.UnitPropagationListener;
44  
45  public class AtLeastCardPBConstructor implements ICardConstructor {
46  
47      public Constr constructCard(UnitPropagationListener solver, ILits voc,
48              IVecInt theLits, int degree) throws ContradictionException {
49          return AtLeastPB.atLeastNew(solver, voc, theLits, degree);
50      }
51  
52      public Constr constructLearntCard(ILits voc, IDataStructurePB dspb) {
53          IVecInt resLits = new VecInt();
54          IVec<BigInteger> resCoefs = new Vec<BigInteger>();
55          dspb.buildConstraintFromConflict(resLits, resCoefs);
56          return AtLeastPB.atLeastNew(voc, resLits, dspb.getDegree().intValue());
57      }
58  
59  }