org.sat4j.pb
Class PBSolverDecorator

java.lang.Object
  org.sat4j.tools.SolverDecorator<IPBSolver>
      org.sat4j.pb.PBSolverDecorator

All Implemented Interfaces:

java.io.Serializable, IPBSolver, IProblem, ISolver

Direct Known Subclasses:

OptToPBSATAdapter, PseudoOptDecorator

public class PBSolverDecorator
extends SolverDecorator<IPBSolver>
implements IPBSolver

A decorator for the PB solvers.

Author:

daniel

See Also:

Serialized Form

Constructor Summary

PBSolverDecorator(IPBSolver solver)

Method Summary

IConstr	addPseudoBoolean(IVecInt lits, IVec<java.math.BigInteger> coeffs, boolean moreThan, java.math.BigInteger d) Create a Pseudo-Boolean constraint of the type "at least n of those literals must be satisfied"
ObjectiveFunction	getObjectiveFunction()
void	setObjectiveFunction(ObjectiveFunction obj)

Methods inherited from class org.sat4j.tools.SolverDecorator

addAllClauses, addAtLeast, addAtMost, addBlockingClause, addClause, clearDecorated, clearLearntClauses, decorated, expireTimeout, findModel, findModel, getStat, getTimeout, getTimeoutMs, isDBSimplificationAllowed, isSatisfiable, isSatisfiable, isSatisfiable, isSatisfiable, model, model, nConstraints, newVar, newVar, nextFreeVarId, nVars, printInfos, printStat, printStat, removeConstr, removeSubsumedConstr, reset, setDBSimplificationAllowed, setExpectedNumberOfClauses, setSearchListener, setTimeout, setTimeoutMs, setTimeoutOnConflicts, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.sat4j.specs.ISolver

addAllClauses, addAtLeast, addAtMost, addBlockingClause, addClause, clearLearntClauses, expireTimeout, getStat, getTimeout, getTimeoutMs, isDBSimplificationAllowed, newVar, newVar, nextFreeVarId, printStat, printStat, removeConstr, removeSubsumedConstr, reset, setDBSimplificationAllowed, setExpectedNumberOfClauses, setSearchListener, setTimeout, setTimeoutMs, setTimeoutOnConflicts, toString

Methods inherited from interface org.sat4j.specs.IProblem

findModel, findModel, isSatisfiable, isSatisfiable, isSatisfiable, isSatisfiable, model, model, nConstraints, nVars, printInfos

Constructor Detail

PBSolverDecorator

public PBSolverDecorator(IPBSolver solver)

Method Detail

addPseudoBoolean

public IConstr addPseudoBoolean(IVecInt lits,
                                IVec<java.math.BigInteger> coeffs,
                                boolean moreThan,
                                java.math.BigInteger d)
                         throws ContradictionException

Description copied from interface: IPBSolver

Create a Pseudo-Boolean constraint of the type "at least n of those literals must be satisfied"

Specified by:

addPseudoBoolean in interface IPBSolver

Parameters:

lits - a set of literals. The vector can be reused since the solver is not supposed to keep a reference to that vector.

coeffs - the coefficients of the literals. The vector can be reused since the solver is not supposed to keep a reference to that vector.

moreThan - true if it is a constraint >= degree

d - the degree of the cardinality constraint

Returns:

a reference to the constraint added in the solver, to use in removeConstr().

Throws:

ContradictionException - iff the vector of literals is empty or if the constraint is falsified after unit propagation

See Also:

ISolver.removeConstr(IConstr)

setObjectiveFunction

public void setObjectiveFunction(ObjectiveFunction obj)

Specified by:

setObjectiveFunction in interface IPBSolver

getObjectiveFunction

public ObjectiveFunction getObjectiveFunction()

Specified by:

getObjectiveFunction in interface IPBSolver