org.apache.calcite.profile

Class ProfilerImpl.HllCompositeCollector

java.lang.Object

org.apache.calcite.profile.ProfilerImpl.Collector

org.apache.calcite.profile.ProfilerImpl.HllCollector

org.apache.calcite.profile.ProfilerImpl.HllCompositeCollector

Enclosing class:

ProfilerImpl

static class ProfilerImpl.HllCompositeCollector
extends ProfilerImpl.HllCollector

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

Field Summary

Fields

Modifier and Type	Field and Description
private ByteBuffer	buf
private int[]	columnOrdinals

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

NULL_BITS, nullCount, sketch

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

space

Constructor Summary

Constructors

Constructor and Description
HllCompositeCollector(ProfilerImpl.Space space, int[] columnOrdinals)

Method Summary

Modifier and Type	Method and Description
void	add(List<Comparable> row)

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

add, finish

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

create

Methods inherited from class java.lang.Object

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

Field Detail

columnOrdinals

private final int[] columnOrdinals

buf

private final ByteBuffer buf

Constructor Detail

HllCompositeCollector

HllCompositeCollector(ProfilerImpl.Space space,
                      int[] columnOrdinals)

Method Detail

add

public void add(List<Comparable> row)

Specified by:

add in class ProfilerImpl.Collector