Package org.apache.calcite.profile

Class ProfilerImpl.SurpriseQueue

  • Enclosing class:
    ProfilerImpl
    static class ProfilerImpl.SurpriseQueue
extends java.lang.Object
    A priority queue of the last N surprise values. Accepts a new value if the queue is not yet full, or if its value is greater than the median value over the last N.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) int count  
      (package private) java.util.Deque<java.lang.Double> deque  
      (package private) java.util.PriorityQueue<java.lang.Double> priorityQueue  
      private int size  
      private int warmUpCount  

    • Constructor Summary

      Constructors 
      Constructor Description
      SurpriseQueue​(int warmUpCount, int size)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      (package private) boolean isValid()  
      (package private) boolean offer​(double d)  
      java.lang.String toString()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • warmUpCount

        private final int warmUpCount

      • size

        private final int size

      • count

        int count

      • deque

        final java.util.Deque<java.lang.Double> deque

      • priorityQueue

        final java.util.PriorityQueue<java.lang.Double> priorityQueue

    • Constructor Detail

      • SurpriseQueue

        SurpriseQueue​(int warmUpCount,
              int size)

    • Method Detail

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object

      • isValid

        boolean isValid()

      • offer

        boolean offer​(double d)