1 /*******************************************************************************
2 * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2008 Daniel Le Berre
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 *******************************************************************************/
28 package org.sat4j.minisat.constraints;
29
30 import org.sat4j.minisat.constraints.cnf.CBClause;
31 import org.sat4j.minisat.constraints.cnf.Clauses;
32 import org.sat4j.minisat.constraints.cnf.Lits;
33 import org.sat4j.minisat.core.Constr;
34 import org.sat4j.minisat.core.ILits;
35 import org.sat4j.minisat.core.Propagatable;
36 import org.sat4j.specs.ContradictionException;
37 import org.sat4j.specs.IVec;
38 import org.sat4j.specs.IVecInt;
39
40 /**
41 * @author parrain To change the template for this generated type comment go to
42 * Window - Preferences - Java - Code Generation - Code and Comments
43 */
44 public class ClausalDataStructureCB extends AbstractDataStructureFactory {
45
46 private static final long serialVersionUID = 1L;
47
48 /*
49 * (non-Javadoc)
50 *
51 * @see org.sat4j.minisat.core.DataStructureFactory#conflictDetectedInWatchesFor(int,
52 * int)
53 */
54 @Override
55 public void conflictDetectedInWatchesFor(int p, int i) {
56 // to nothing
57 }
58
59 /*
60 * (non-Javadoc)
61 *
62 * @see org.sat4j.minisat.core.DataStructureFactory#getWatchesFor(int)
63 */
64 @Override
65 public IVec<Propagatable> getWatchesFor(int p) {
66 return getVocabulary().watches(p);
67 }
68
69 /*
70 * (non-Javadoc)
71 *
72 * @see org.sat4j.minisat.core.DataStructureFactory#createClause(org.sat4j.specs.VecInt)
73 */
74 public Constr createClause(IVecInt literals) throws ContradictionException {
75 IVecInt v = Clauses.sanityCheck(literals, getVocabulary(), solver);
76 if (v == null)
77 return null;
78 return CBClause.brandNewClause(solver, getVocabulary(), v);
79 }
80
81 /*
82 * (non-Javadoc)
83 *
84 * @see org.sat4j.minisat.core.DataStructureFactory#createUnregisteredClause(org.sat4j.specs.VecInt)
85 */
86 public Constr createUnregisteredClause(IVecInt literals) {
87 return new CBClause(literals, getVocabulary());
88 }
89
90 @Override
91 protected ILits createLits() {
92 return new Lits();
93 }
94
95 }