org.apache.druid.query.aggregation

Class ObjectAggregateCombiner<T>

java.lang.Object

org.apache.druid.segment.ObjectColumnSelector<T>

org.apache.druid.query.aggregation.ObjectAggregateCombiner<T>

All Implemented Interfaces:

AggregateCombiner<T>, HotLoopCallee, BaseDoubleColumnValueSelector, BaseFloatColumnValueSelector, BaseLongColumnValueSelector, BaseNullableColumnValueSelector, BaseObjectColumnValueSelector<T>, ColumnValueSelector<T>

Direct Known Subclasses:

HyperLogLogCollectorAggregateCombiner, StringFirstAggregateCombiner, StringLastAggregateCombiner

public abstract class ObjectAggregateCombiner<T>
extends ObjectColumnSelector<T>
implements AggregateCombiner<T>

Specialization of AggregateCombiner for object aggregations.

Field Summary

Fields inherited from interface org.apache.druid.segment.ColumnValueSelector

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor and Description
ObjectAggregateCombiner()

Method Summary

Methods inherited from class org.apache.druid.segment.ObjectColumnSelector

getDouble, getFloat, getLong, isNull

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.query.aggregation.AggregateCombiner

fold, inspectRuntimeShape, isNull, reset

Methods inherited from interface org.apache.druid.segment.BaseLongColumnValueSelector

getLong

Methods inherited from interface org.apache.druid.segment.BaseDoubleColumnValueSelector

getDouble

Methods inherited from interface org.apache.druid.segment.BaseFloatColumnValueSelector

getFloat

Methods inherited from interface org.apache.druid.segment.BaseObjectColumnValueSelector

classOfObject, getObject

Constructor Detail

ObjectAggregateCombiner

public ObjectAggregateCombiner()