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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 pseudo boolean algorithms described in:
20  * A fast pseudo-Boolean constraint solver Chai, D.; Kuehlmann, A.
21  * Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on
22  * Volume 24, Issue 3, March 2005 Page(s): 305 - 317
23  * 
24  * and 
25  * Heidi E. Dixon, 2004. Automating Pseudo-Boolean Inference within a DPLL 
26  * Framework. Ph.D. Dissertation, University of Oregon.
27  *******************************************************************************/
28  package org.sat4j.pb.constraints;
29  
30  import java.math.BigInteger;
31  
32  import org.sat4j.pb.constraints.pb.IDataStructurePB;
33  import org.sat4j.pb.constraints.pb.MinWatchPb;
34  import org.sat4j.pb.constraints.pb.PBConstr;
35  import org.sat4j.specs.ContradictionException;
36  import org.sat4j.specs.IVec;
37  import org.sat4j.specs.IVecInt;
38  
39  /**
40   * @author leberre To change the template for this generated type comment go to
41   *         Window - Preferences - Java - Code Generation - Code and Comments
42   */
43  public class PBMinDataStructure extends AbstractPBDataStructureFactory {
44  
45      private static final long serialVersionUID = 1L;
46  
47      /*
48       * (non-Javadoc)
49       * 
50       * @see org.sat4j.minisat.constraints.AbstractPBDataStructureFactory#constraintFactory(org.sat4j.specs.VecInt,
51       *      org.sat4j.specs.VecInt, boolean, int)
52       */
53      @Override
54      protected PBConstr constraintFactory(IVecInt literals, IVecInt coefs,
55              boolean moreThan, int degree) throws ContradictionException {
56          return MinWatchPb.minWatchPbNew(solver, getVocabulary(), literals,
57                  coefs, moreThan, degree);
58      }
59  
60      /*
61       * (non-Javadoc)
62       * 
63       * @see org.sat4j.minisat.constraints.AbstractPBDataStructureFactory#constraintFactory(org.sat4j.specs.VecInt,
64       *      org.sat4j.specs.VecInt, int)
65       */
66      @Override
67      protected PBConstr constraintFactory(IVecInt literals, IVecInt coefs,
68              int degree) {
69          return MinWatchPb.watchPbNew(getVocabulary(), literals, coefs, true,
70                  degree);
71      }
72  
73      /*
74       * (non-Javadoc)
75       * 
76       * @see org.sat4j.minisat.constraints.AbstractPBDataStructureFactory#constraintFactory(org.sat4j.specs.VecInt,
77       *      org.sat4j.specs.VecInt, boolean, int)
78       */
79      @Override
80      protected PBConstr constraintFactory(IVecInt literals,
81              IVec<BigInteger> coefs, boolean moreThan, BigInteger degree)
82              throws ContradictionException {
83          return MinWatchPb.minWatchPbNew(solver, getVocabulary(), literals,
84                  coefs, moreThan, degree);
85      }
86  
87      /*
88       * (non-Javadoc)
89       * 
90       * @see org.sat4j.minisat.constraints.AbstractPBDataStructureFactory#constraintFactory(org.sat4j.specs.VecInt,
91       *      org.sat4j.specs.VecInt, int)
92       */
93      @Override
94      protected PBConstr constraintFactory(IVecInt literals,
95              IVec<BigInteger> coefs, BigInteger degree) {
96          return MinWatchPb.watchPbNew(getVocabulary(), literals, coefs, true,
97                  degree);
98      }
99  
100     /*
101      * (non-Javadoc)
102      * 
103      * @see org.sat4j.minisat.constraints.AbstractPBDataStructureFactory#constraintFactory(org.sat4j.specs.VecInt,
104      *      org.sat4j.specs.VecInt, int)
105      */
106     @Override
107     protected PBConstr constraintFactory(IDataStructurePB dspb) {
108         return MinWatchPb.normalizedWatchPbNew(getVocabulary(), dspb);
109     }
110 
111 }