org.apache.calcite.profile

Class ProfilerImpl.SurpriseQueue

java.lang.Object

org.apache.calcite.profile.ProfilerImpl.SurpriseQueue

Enclosing class:

ProfilerImpl

static class ProfilerImpl.SurpriseQueue
extends 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 and Description
(package private) int	count
(package private) Deque<Double>	deque
(package private) PriorityQueue<Double>	priorityQueue
private int	size
private int	warmUpCount

Constructor Summary

Constructors

Constructor and Description
SurpriseQueue(int warmUpCount, int size)

Method Summary

Modifier and Type	Method and Description
(package private) boolean	isValid()
(package private) boolean	offer(double d)
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 Deque<Double> deque

priorityQueue

final PriorityQueue<Double> priorityQueue

Constructor Detail

SurpriseQueue

SurpriseQueue(int warmUpCount,
              int size)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

isValid

boolean isValid()

offer

boolean offer(double d)