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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.minisat.constraints;
31  
32  import org.sat4j.minisat.constraints.card.AtLeast;
33  import org.sat4j.minisat.constraints.cnf.LearntWLClause;
34  import org.sat4j.minisat.core.Constr;
35  import org.sat4j.specs.ContradictionException;
36  import org.sat4j.specs.IVecInt;
37  
38  /**
39   * @author leberre To change the template for this generated type comment go to
40   *         Window - Preferences - Java - Code Generation - Code and Comments
41   */
42  public class CardinalityDataStructure extends AbstractCardinalityDataStructure {
43  
44      private static final long serialVersionUID = 1L;
45  
46      public Constr createUnregisteredClause(IVecInt literals) {
47          return new LearntWLClause(literals, getVocabulary());
48      }
49  
50      /*
51       * (non-Javadoc)
52       * 
53       * @see
54       * org.sat4j.minisat.DataStructureFactory#createClause(org.sat4j.datatype
55       * .VecInt)
56       */
57      public Constr createClause(IVecInt literals) throws ContradictionException {
58          return AtLeast.atLeastNew(this.solver, getVocabulary(), literals, 1);
59      }
60  
61      /*
62       * (non-Javadoc)
63       * 
64       * @see
65       * org.sat4j.minisat.DataStructureFactory#createCardinalityConstraint(org
66       * .sat4j.datatype.VecInt, int)
67       */
68      @Override
69      public Constr createCardinalityConstraint(IVecInt literals, int degree)
70              throws ContradictionException {
71          return AtLeast.atLeastNew(this.solver, getVocabulary(), literals,
72                  degree);
73      }
74  
75      public Constr createUnregisteredCardinalityConstraint(IVecInt literals,
76              int degree) {
77          return new AtLeast(getVocabulary(), literals, degree);
78      }
79  
80  }