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The pb library contains algorithms for solving pseudo boolean optimization problems.

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/*******************************************************************************
 * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2008 Daniel Le Berre
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU Lesser General Public License Version 2.1 or later (the
 * "LGPL"), in which case the provisions of the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of the LGPL, and not to allow others to use your version of
 * this file under the terms of the EPL, indicate your decision by deleting
 * the provisions above and replace them with the notice and other provisions
 * required by the LGPL. If you do not delete the provisions above, a recipient
 * may use your version of this file under the terms of the EPL or the LGPL.
 * 
 * Based on the original MiniSat specification from:
 * 
 * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
 * Sixth International Conference on Theory and Applications of Satisfiability
 * Testing, LNCS 2919, pp 502-518, 2003.
 *
 * See www.minisat.se for the original solver in C++.
 * 
 *******************************************************************************/
package org.sat4j.pb.constraints;

import java.math.BigInteger;

import org.sat4j.core.Vec;
import org.sat4j.core.VecInt;
import org.sat4j.minisat.constraints.card.AtLeast;
import org.sat4j.minisat.core.Constr;
import org.sat4j.minisat.core.ILits;
import org.sat4j.minisat.core.UnitPropagationListener;
import org.sat4j.pb.constraints.pb.IDataStructurePB;
import org.sat4j.specs.ContradictionException;
import org.sat4j.specs.IVec;
import org.sat4j.specs.IVecInt;

public class AtLeastCardConstructor implements ICardConstructor {

	public Constr constructCard(UnitPropagationListener solver, ILits voc,
			IVecInt theLits, int degree) throws ContradictionException {
		return AtLeast.atLeastNew(solver, voc, theLits, degree);
	}

	public Constr constructLearntCard(ILits voc, IDataStructurePB dspb) {
		IVecInt resLits = new VecInt();
		IVec resCoefs = new Vec();
		dspb.buildConstraintFromConflict(resLits, resCoefs);
		// return AtLeast.atLeastNew(voc, resLits, dspb.getDegree().intValue());
		return null;
	}

}