Class MinSimple

All Implemented Interfaces:
SatisfiedPresent

public class MinSimple extends Constraint implements SatisfiedPresent
MinSimple constraint implements the minimum/2 constraint. It provides the minimum variable from all variables on the list.

min(x1, x2) = min.

Version:
4.8
  • Field Details

    • idNumber

      static final AtomicInteger idNumber
    • x1

      public final IntVar x1
      It specifies a variables between which a minimum value is being searched for.
    • x2

      public final IntVar x2
      It specifies a variables between which a minimum value is being searched for.
    • min

      public final IntVar min
      It specifies variable min which stores the minimum value present in the list.
  • Constructor Details

    • MinSimple

      public MinSimple(IntVar x1, IntVar x2, IntVar min)
      It constructs min constraint.
      Parameters:
      min - variable denoting the minimum value
      x1 - first variable for which a minimum value is imposed.
      x2 - second variable for which a minimum value is imposed.
  • Method Details

    • 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.
    • getDefaultConsistencyPruningEvent

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

      Specified by:
      satisfied in interface SatisfiedPresent
      Returns:
      true if constraint is possible to verify that it is satisfied.
    • toString

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