org.sat4j.minisat.constraints.pb
Class WLClausePB

java.lang.Object
  extended by org.sat4j.minisat.constraints.cnf.WLClause
      extended by org.sat4j.minisat.constraints.cnf.DefaultWLClause
          extended by 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


Copyright © 2007 Centre de Recherche en Informatique de Lens (CRIL). All Rights Reserved.