org.sat4j.minisat.constraints.pb
Class WLClausePB

java.lang.Object
  org.sat4j.minisat.constraints.cnf.WLClause
      org.sat4j.minisat.constraints.cnf.DefaultWLClause
          org.sat4j.minisat.constraints.pb.WLClausePB

All Implemented Interfaces:

java.io.Serializable, PBConstr, Constr, Propagatable, IConstr

public class WLClausePB
extends DefaultWLClause
implements PBConstr

See Also:

Serialized Form

Field Summary

Fields inherited from class org.sat4j.minisat.constraints.cnf.WLClause

lits, voc

Constructor Summary

WLClausePB(IVecInt ps, ILits voc)

Method Summary

void	assertConstraint(UnitPropagationListener s) Method called when the constraint is to be asserted.
static WLClausePB	brandNewClause(UnitPropagationListener s, ILits voc, IVecInt literals) Creates a brand new clause, presumably from external data.
IVecInt	computeAnImpliedClause()
java.math.BigInteger	getCoef(int literal)
java.math.BigInteger[]	getCoefs()
java.math.BigInteger	getDegree()

Methods inherited from class org.sat4j.minisat.constraints.cnf.DefaultWLClause

learnt, register, setLearnt

Methods inherited from class org.sat4j.minisat.constraints.cnf.WLClause

calcReason, get, getActivity, getLits, getVocabulary, incActivity, locked, propagate, remove, rescaleBy, sanityCheck, simplify, size, toString

Methods inherited from class java.lang.Object

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

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

getLits, getVocabulary

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

calcReason, getActivity, incActivity, locked, register, remove, rescaleBy, setLearnt, simplify

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

propagate

Methods inherited from interface org.sat4j.specs.IConstr

get, learnt, size

Constructor Detail

WLClausePB

public WLClausePB(IVecInt ps,
                  ILits voc)

Method Detail

getCoef

public java.math.BigInteger getCoef(int literal)

Specified by:

getCoef in interface PBConstr

getDegree

public java.math.BigInteger getDegree()

Specified by:

getDegree in interface PBConstr

getCoefs

public java.math.BigInteger[] getCoefs()

Specified by:

getCoefs in interface PBConstr

brandNewClause

public static WLClausePB brandNewClause(UnitPropagationListener s,
                                        ILits voc,
                                        IVecInt literals)

Creates a brand new clause, presumably from external data. Performs all sanity checks.

Parameters:

s - the object responsible for unit propagation

voc - the vocabulary

literals - the literals to store in the clause

Returns:

the created clause or null if the clause should be ignored (tautology for example)

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 WLClause

Parameters:

s - a UnitPropagationListener to use for unit propagation.

computeAnImpliedClause

public IVecInt computeAnImpliedClause()

Specified by:

computeAnImpliedClause in interface PBConstr