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;
29
30 import java.math.BigInteger;
31
32 import org.sat4j.specs.ContradictionException;
33 import org.sat4j.specs.IConstr;
34 import org.sat4j.specs.IVec;
35 import org.sat4j.specs.IVecInt;
36 import org.sat4j.tools.SolverDecorator;
37
38 /**
39 * A decorator for the PB solvers.
40 *
41 * @author daniel
42 *
43 */
44 public class PBSolverDecorator extends SolverDecorator<IPBSolver> implements IPBSolver {
45
46 /**
47 *
48 */
49 private static final long serialVersionUID = 1L;
50
51 public PBSolverDecorator(IPBSolver solver) {
52 super(solver);
53 }
54
55 public IConstr addPseudoBoolean(IVecInt lits, IVec<BigInteger> coeffs,
56 boolean moreThan, BigInteger d) throws ContradictionException {
57 return decorated().addPseudoBoolean(lits, coeffs, moreThan, d);
58 }
59
60 public void setListOfVariablesForExplanation(IVecInt varExplain) {
61 decorated().setListOfVariablesForExplanation(varExplain);
62 }
63
64 public String getExplanation(){
65 return decorated().getExplanation();
66 }
67
68 public void setObjectiveFunction(ObjectiveFunction obj) {
69 decorated().setObjectiveFunction(obj);
70 }
71
72 }