Package org.apache.calcite.profile

Class ProfilerImpl.HllCollector

java.lang.Object

org.apache.calcite.profile.ProfilerImpl.Collector

org.apache.calcite.profile.ProfilerImpl.HllCollector

Direct Known Subclasses:

ProfilerImpl.HllCompositeCollector, ProfilerImpl.HllSingletonCollector

Enclosing class:

ProfilerImpl

abstract static class ProfilerImpl.HllCollector
extends ProfilerImpl.Collector

Collector that collects two or more column values into a HyperLogLog sketch.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static long[]	NULL_BITS
(package private) int	nullCount
(package private) com.yahoo.sketches.hll.HllSketch	sketch

Fields inherited from class org.apache.calcite.profile.ProfilerImpl.Collector

space

Constructor Summary

Constructors

Constructor	Description
HllCollector(ProfilerImpl.Space space)

Method Summary

Modifier and Type	Method	Description
protected void	add(java.lang.Comparable value)
void	finish()

Methods inherited from class org.apache.calcite.profile.ProfilerImpl.Collector

add, create

Methods inherited from class java.lang.Object

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

Field Detail

sketch

final com.yahoo.sketches.hll.HllSketch sketch

nullCount

int nullCount

NULL_BITS

static final long[] NULL_BITS

Constructor Detail

HllCollector

HllCollector(ProfilerImpl.Space space)

Method Detail

add

protected void add(java.lang.Comparable value)

finish

public void finish()

Specified by:

finish in class ProfilerImpl.Collector