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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;
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
45  		IPBSolver {
46  
47  	/**
48       * 
49       */
50  	private static final long serialVersionUID = 1L;
51  
52  	public PBSolverDecorator(IPBSolver solver) {
53  		super(solver);
54  	}
55  
56  	public IConstr addPseudoBoolean(IVecInt lits, IVec<BigInteger> coeffs,
57  			boolean moreThan, BigInteger d) throws ContradictionException {
58  		return decorated().addPseudoBoolean(lits, coeffs, moreThan, d);
59  	}
60  
61  	public void setObjectiveFunction(ObjectiveFunction obj) {
62  		decorated().setObjectiveFunction(obj);
63  	}
64  
65  	public ObjectiveFunction getObjectiveFunction() {
66  		return decorated().getObjectiveFunction();
67  	}
68  
69  	public IConstr addAtMost(IVecInt literals, IVecInt coeffs, int degree)
70  			throws ContradictionException {
71  		return decorated().addAtMost(literals, coeffs, degree);
72  	}
73  
74  	public IConstr addAtMost(IVecInt literals, IVec<BigInteger> coeffs,
75  			BigInteger degree) throws ContradictionException {
76  		return decorated().addAtMost(literals, coeffs, degree);
77  	}
78  
79  	public IConstr addAtLeast(IVecInt literals, IVecInt coeffs, int degree)
80  			throws ContradictionException {
81  		return decorated().addAtLeast(literals, coeffs, degree);
82  	}
83  
84  	public IConstr addAtLeast(IVecInt literals, IVec<BigInteger> coeffs,
85  			BigInteger degree) throws ContradictionException {
86  		return decorated().addAtLeast(literals, coeffs, degree);
87  	}
88  
89  	public IConstr addExactly(IVecInt literals, IVecInt coeffs, int weight)
90  			throws ContradictionException {
91  		return decorated().addExactly(literals, coeffs, weight);
92  	}
93  
94  	public IConstr addExactly(IVecInt literals, IVec<BigInteger> coeffs,
95  			BigInteger weight) throws ContradictionException {
96  		return decorated().addExactly(literals, coeffs, weight);
97  	}
98  
99  }