org.sat4j.minisat.constraints
Class CardinalityDataStructure

java.lang.Object
  org.sat4j.minisat.constraints.AbstractDataStructureFactory
      org.sat4j.minisat.constraints.AbstractCardinalityDataStructure
          org.sat4j.minisat.constraints.CardinalityDataStructure

All Implemented Interfaces:

Serializable, DataStructureFactory

public class CardinalityDataStructure
extends AbstractCardinalityDataStructure

Author:

leberre To change the template for this generated type comment go to Window - Preferences - Java - Code Generation - Code and Comments

See Also:

Serialized Form

Field Summary

Fields inherited from class org.sat4j.minisat.constraints.AbstractDataStructureFactory

learner, lits, solver

Constructor Summary

CardinalityDataStructure()

Method Summary

Constr	createCardinalityConstraint(IVecInt literals, int degree) Create a cardinality constraint of the form sum li >= degree.
Constr	createClause(IVecInt literals)
Constr	createUnregisteredClause(IVecInt literals)

Methods inherited from class org.sat4j.minisat.constraints.AbstractCardinalityDataStructure

createLits

Methods inherited from class org.sat4j.minisat.constraints.AbstractDataStructureFactory

conflictDetectedInWatchesFor, getVocabulary, getWatchesFor, learnConstraint, reset, setLearner, setUnitPropagationListener

Methods inherited from class java.lang.Object

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

Constructor Detail

CardinalityDataStructure

public CardinalityDataStructure()

Method Detail

createUnregisteredClause

public Constr createUnregisteredClause(IVecInt literals)

createClause

public Constr createClause(IVecInt literals)
                    throws ContradictionException

Parameters:

literals - a set of literals using Dimacs format (signed non null integers).

Returns:

null if the constraint is a tautology.

Throws:

ContradictionException - the constraint is trivially unsatisfiable.

createCardinalityConstraint

public Constr createCardinalityConstraint(IVecInt literals,
                                          int degree)
                                   throws ContradictionException

Description copied from interface: DataStructureFactory

Create a cardinality constraint of the form sum li >= degree.

Specified by:

createCardinalityConstraint in interface DataStructureFactory

Overrides:

createCardinalityConstraint in class AbstractDataStructureFactory

Parameters:

literals - a set of literals.

degree - the degree of the cardinality constraint.

Returns:

a constraint stating that at least degree literals are satisfied.

Throws:

ContradictionException