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1   /*
2    * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2006 Daniel Le Berre
3    * 
4    * Based on the original minisat specification from:
5    * 
6    * An extensible SAT solver. Niklas E?n and Niklas S?rensson. Proceedings of the
7    * Sixth International Conference on Theory and Applications of Satisfiability
8    * Testing, LNCS 2919, pp 502-518, 2003.
9    * 
10   * This library is free software; you can redistribute it and/or modify it under
11   * the terms of the GNU Lesser General Public License as published by the Free
12   * Software Foundation; either version 2.1 of the License, or (at your option)
13   * any later version.
14   * 
15   * This library is distributed in the hope that it will be useful, but WITHOUT
16   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
18   * details.
19   * 
20   * You should have received a copy of the GNU Lesser General Public License
21   * along with this library; if not, write to the Free Software Foundation, Inc.,
22   * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23   * 
24   */
25  
26  package org.sat4j.minisat.constraints;
27  
28  import org.sat4j.minisat.constraints.cnf.LearntWLClause;
29  import org.sat4j.minisat.constraints.cnf.Lits;
30  import org.sat4j.minisat.constraints.cnf.OriginalWLClause;
31  import org.sat4j.minisat.constraints.cnf.WLClause;
32  import org.sat4j.minisat.core.Constr;
33  import org.sat4j.minisat.core.ILits;
34  import org.sat4j.specs.ContradictionException;
35  import org.sat4j.specs.IVecInt;
36  
37  /**
38   * @author leberre To change the template for this generated type comment go to
39   *         Window - Preferences - Java - Code Generation - Code and Comments
40   */
41  public class ClausalDataStructureWL extends AbstractDataStructureFactory<ILits> {
42  
43      private static final long serialVersionUID = 1L;
44  
45      /*
46       * (non-Javadoc)
47       * 
48       * @see org.sat4j.minisat.DataStructureFactory#createClause(org.sat4j.datatype.VecInt)
49       */
50      public Constr createClause(IVecInt literals) throws ContradictionException {
51          IVecInt v = WLClause.sanityCheck(literals, getVocabulary(), solver);
52          if (v == null)
53              return null;
54          return OriginalWLClause.brandNewClause(solver, getVocabulary(), v);
55      }
56  
57      public Constr createUnregisteredClause(IVecInt literals) {
58          return new LearntWLClause(literals, getVocabulary());
59      }
60  
61      @Override
62      protected ILits createLits() {
63          return new Lits();
64      }
65  }