org.sat4j.pb.constraints.pb
Class MinWatchCardPB

java.lang.Object
  org.sat4j.minisat.constraints.card.MinWatchCard
      org.sat4j.pb.constraints.pb.MinWatchCardPB

All Implemented Interfaces:

Serializable, Constr, Propagatable, Undoable, PBConstr, IConstr

public final class MinWatchCardPB
extends MinWatchCard
implements PBConstr

See Also:

Serialized Form

Field Summary

Fields inherited from class org.sat4j.minisat.constraints.card.MinWatchCard

ATLEAST, ATMOST, degree, watchCumul

Constructor Summary

MinWatchCardPB(ILits voc, IVecInt ps, boolean moreThan, int degree)

MinWatchCardPB(ILits voc, IVecInt ps, int degree)

Method Summary

void	assertConstraint(UnitPropagationListener s) Method called when the constraint is to be asserted.
IVecInt	computeAnImpliedClause()
BigInteger	getCoef(int literal)
BigInteger[]	getCoefs()
BigInteger	getDegree()
boolean	learnt() D?
static PBConstr	minWatchCardPBNew(UnitPropagationListener s, ILits voc, IVecInt ps, boolean moreThan, int degree) Permet la cr?
static PBConstr	normalizedMinWatchCardPBNew(UnitPropagationListener s, ILits voc, IVecInt ps, int degree) Permet la cr?
void	register() Register the constraint to the solver.
void	setLearnt() Mark a constraint as learnt.

Methods inherited from class org.sat4j.minisat.constraints.card.MinWatchCard

calcReason, canBePropagatedMultipleTimes, computePropagation, computeWatches, equals, forwardActivity, get, getActivity, getLits, getVocabulary, hashCode, incActivity, linearisation, locked, minWatchCardNew, normalize, propagate, remove, rescaleBy, simplify, size, toString, undo

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.sat4j.pb.constraints.pb.PBConstr

getLits, getVocabulary

Methods inherited from interface org.sat4j.minisat.core.Constr

calcReason, forwardActivity, incActivity, locked, remove, rescaleBy, simplify

Methods inherited from interface org.sat4j.minisat.core.Propagatable

propagate

Methods inherited from interface org.sat4j.specs.IConstr

canBePropagatedMultipleTimes, get, getActivity, size

Constructor Detail

MinWatchCardPB

public MinWatchCardPB(ILits voc,
                      IVecInt ps,
                      boolean moreThan,
                      int degree)

MinWatchCardPB

public MinWatchCardPB(ILits voc,
                      IVecInt ps,
                      int degree)

Method Detail

getCoef

public BigInteger getCoef(int literal)

Specified by:

getCoef in interface PBConstr

getDegree

public BigInteger getDegree()

Specified by:

getDegree in interface PBConstr

getCoefs

public BigInteger[] getCoefs()

Specified by:

getCoefs in interface PBConstr

normalizedMinWatchCardPBNew

public static PBConstr normalizedMinWatchCardPBNew(UnitPropagationListener s,
                                                   ILits voc,
                                                   IVecInt ps,
                                                   int degree)
                                            throws ContradictionException

Permet la cr?ation de contrainte de cardinalit? ? observation minimale

Parameters:

s - outil pour la propagation des litt?raux

voc - vocabulaire utilis? par la contrainte

ps - liste des litt?raux de la nouvelle contrainte

degree - fournit le degr? de la contrainte

Returns:

une nouvelle clause si tout va bien, null sinon

Throws:

ContradictionException

minWatchCardPBNew

public static PBConstr minWatchCardPBNew(UnitPropagationListener s,
                                         ILits voc,
                                         IVecInt ps,
                                         boolean moreThan,
                                         int degree)
                                  throws ContradictionException

Permet la cr?ation de contrainte de cardinalit? ? observation minimale

Parameters:

s - outil pour la propagation des litt?raux

voc - vocabulaire utilis? par la contrainte

ps - liste des litt?raux de la nouvelle contrainte

moreThan - d?termine si c'est une sup?rieure ou ?gal ? l'origine

degree - fournit le degr? de la contrainte

Returns:

une nouvelle clause si tout va bien, null sinon

Throws:

ContradictionException

learnt

public boolean learnt()

D?termine si la contrainte est apprise

Specified by:

learnt in interface IConstr

Overrides:

learnt in class MinWatchCard

Returns:

true si la contrainte est apprise, false sinon

See Also:

IConstr.learnt()

setLearnt

public void setLearnt()

Description copied from interface: Constr

Mark a constraint as learnt.

Specified by:

setLearnt in interface Constr

Overrides:

setLearnt in class MinWatchCard

register

public void register()

Description copied from interface: Constr

Register the constraint to the solver.

Specified by:

register in interface Constr

Overrides:

register in class MinWatchCard

assertConstraint

public void assertConstraint(UnitPropagationListener s)

Description copied from interface: Constr

Method called when the constraint is to be asserted. It means that the constraint was learnt during the search and it should now propagate some truth values. In the clausal case, only one literal should be propagated. In other cases, it might be different.

Specified by:

assertConstraint in interface Constr

Overrides:

assertConstraint in class MinWatchCard

Parameters:

s - a UnitPropagationListener to use for unit propagation.

computeAnImpliedClause

public IVecInt computeAnImpliedClause()

Specified by:

computeAnImpliedClause in interface PBConstr