Class CumulativeBasic

  • Direct Known Subclasses:
    Cumulative

    public class CumulativeBasic
    extends Constraint
    CumulativeBasic implements the cumulative constraint using time tabling algorithm.
    Version:
    4.8
    • Field Detail

      • idNumber

        private static final java.util.concurrent.atomic.AtomicInteger idNumber
      • taskNormal

        final TaskView[] taskNormal
        All tasks of the constraint
      • limit

        public final IntVar limit
        It specifies the limit of the profile of cumulative use of resources.
      • possibleZeroTasks

        boolean possibleZeroTasks
        It specifies whether there possibly exist tasks that have duration or resource variable min value equal zero.
    • Constructor Detail

      • CumulativeBasic

        public CumulativeBasic​(IntVar[] starts,
                               IntVar[] durations,
                               IntVar[] resources,
                               IntVar limit)
        It creates a cumulative constraint.
        Parameters:
        starts - variables denoting starts of the tasks.
        durations - variables denoting durations of the tasks.
        resources - variables denoting resource usage of the tasks.
        limit - the overall limit of resources which has to be used.
      • CumulativeBasic

        public CumulativeBasic​(java.util.List<? extends IntVar> starts,
                               java.util.List<? extends IntVar> durations,
                               java.util.List<? extends IntVar> resources,
                               IntVar limit)
        It creates a cumulative constraint.
        Parameters:
        starts - variables denoting starts of the tasks.
        durations - variables denoting durations of the tasks.
        resources - variables denoting resource usage of the tasks.
        limit - the overall limit of resources which has to be used.
    • 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.
      • profileProp

        void profileProp​(Store store)
      • updateTasksRes

        private void updateTasksRes​(Store store)
      • 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
      • sweepPruning

        private void sweepPruning​(Store store)