Package org.jacop.constraints

Class Max

java.lang.Object
org.jacop.constraints.DecomposedConstraint<Constraint>
org.jacop.constraints.Constraint
org.jacop.constraints.Max
All Implemented Interfaces:
SatisfiedPresent
public class Max extends Constraint implements SatisfiedPresent
Max constraint implements the Maximum/2 constraint. It provides the maximum variable from all variables on the list.

max(list) = max.

Version:
4.10

  • Field Details

    • idNumber

      static final AtomicInteger idNumber

    • list

      public final IntVar[] list
      It specifies a list of variables among which a maximum value is being searched for.

    • max

      public final IntVar max
      It specifies variable max which stores the maximum value present in the list.

    • l

      final int l
      It specifies length of the list.

    • position

      private TimeStamp<Integer> position
      Defines first position of the variable that needs to be considered

  • Constructor Details

    • Max

      public Max(IntVar[] list, IntVar max)
      It constructs max constraint.
      Parameters:
      list - the array of variables for which the maximum value is imposed.
      max - variable denoting the maximum value

    • Max

      public Max(List<? extends IntVar> variables, IntVar max)
      It constructs max constraint.
      Parameters:
      variables - the array of variables for which the maximum value is imposed.
      max - variable denoting the maximum value

  • 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.

    • swap

      private void swap(int i, int j)

    • getDefaultConsistencyPruningEvent

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

    • impose

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

    • 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