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:
    4.7
    • Field Detail

      • idNumber

        static final java.util.concurrent.atomic.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 Detail

      • 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 Detail

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