Class OrBoolVector

All Implemented Interfaces:
SatisfiedPresent, StoreAware

public class OrBoolVector extends PrimitiveConstraint
If at least one variable from the list is equal 1 then result variable is equal 1 too. Otherwise, result variable is equal to zero. It restricts the domain of all x as well as result to be between 0 and 1.
Version:
4.10
  • Field Details

    • idNumber

      static AtomicInteger idNumber
    • list

      public IntVar[] list
      It specifies a list of variables among which one must be equal to 1 to set result variable to 1.
    • result

      public IntVar result
      It specifies variable result, storing the result of or function performed a list of variables.
    • l

      final int l
      It specifies the length of the list of variables.
    • position

      private TimeStamp<Integer> position
    • constraints

      List<Constraint> constraints
  • Constructor Details

    • OrBoolVector

      public OrBoolVector(IntVar[] list, IntVar result)
      It constructs orBool.
      Parameters:
      list - list of x's which one of them must be equal 1 to make result equal 1.
      result - variable which is equal 0 if none of x is equal to zero.
    • OrBoolVector

      public OrBoolVector(List<? extends IntVar> list, IntVar result)
      It constructs orBool.
      Parameters:
      list - list of x's which one of them must be equal 1 to make result equal 1.
      result - variable which is equal 0 if none of x is equal to zero.
  • Method Details

    • checkInvariants

      public String checkInvariants()
      It checks invariants required by the constraint. Namely that boolean variables have boolean domain.
      Returns:
      the string describing the violation of the invariant, null otherwise.
    • getDefaultNestedNotConsistencyPruningEvent

      protected int getDefaultNestedNotConsistencyPruningEvent()
      Overrides:
      getDefaultNestedNotConsistencyPruningEvent in class PrimitiveConstraint
    • getDefaultNestedConsistencyPruningEvent

      protected int getDefaultNestedConsistencyPruningEvent()
      Overrides:
      getDefaultNestedConsistencyPruningEvent in class PrimitiveConstraint
    • getDefaultConsistencyPruningEvent

      public int getDefaultConsistencyPruningEvent()
      Specified by:
      getDefaultConsistencyPruningEvent in class Constraint
    • getDefaultNotConsistencyPruningEvent

      protected int getDefaultNotConsistencyPruningEvent()
      Specified by:
      getDefaultNotConsistencyPruningEvent in class PrimitiveConstraint
    • include

      public void include(Store store)
      Description copied from interface: StoreAware
      It provide store for constraints that are not imposed but called from other constraints.
      Specified by:
      include in interface StoreAware
      Overrides:
      include in class PrimitiveConstraint
      Parameters:
      store - the constraint store in which context the constraint is executed.
    • consistency

      public void consistency(Store store)
      Description copied from class: Constraint
      It is a (most probably incomplete) consistency function which removes the values from variables domains. Only values which do not have any support in a solution space are removed.
      Specified by:
      consistency in class Constraint
      Parameters:
      store - constraint store within which the constraint consistency is being checked.
    • swap

      private void swap(int i, int j)
    • notConsistency

      public void notConsistency(Store store)
      Description copied from class: PrimitiveConstraint
      It makes pruning in such a way that constraint is notConsistent. It removes values which always belong to a solution.
      Specified by:
      notConsistency in class PrimitiveConstraint
      Parameters:
      store - the constraint store in which context the notConsistency technique is evaluated.
    • satisfied

      public boolean satisfied()
      Description copied from interface: SatisfiedPresent
      It checks if the constraint is satisfied. It can return false even if constraint is satisfied but not all variables in its scope are grounded. It needs to return true if all variables in its scope are grounded and constraint is satisfied.

      Implementations of this interface for constraints that are not PrimitiveConstraint may require constraint imposition and consistency check as a requirement to work correctly.

      Returns:
      true if constraint is possible to verify that it is satisfied.
    • notSatisfied

      public boolean notSatisfied()
      Description copied from class: PrimitiveConstraint
      It checks if constraint would be always not satisfied.
      Specified by:
      notSatisfied in class PrimitiveConstraint
      Returns:
      true if constraint must be notSatisfied, false otherwise.
    • toString

      public String toString()
      Description copied from class: Constraint
      It produces a string representation of a constraint state.
      Overrides:
      toString in class Constraint
    • decompose

      public List<Constraint> decompose(Store store)
      Description copied from class: Constraint
      It returns an array list of constraint which are used to decompose this constraint. It actually creates a decomposition (possibly also creating variables), but it does not impose the constraint.
      Overrides:
      decompose in class Constraint
      Parameters:
      store - the constraint store in which context the decomposition takes place.
      Returns:
      an array list of constraints used to decompose this constraint.
    • imposeDecomposition

      public void imposeDecomposition(Store store)
      Description copied from class: Constraint
      It imposes the decomposition of the given constraint in a given store.
      Overrides:
      imposeDecomposition in class Constraint
      Parameters:
      store - the constraint store to which the constraint is imposed to.