Package org.apache.calcite.interpreter

Class AggregateNode.UdaAccumulatorFactory

java.lang.Object

org.apache.calcite.interpreter.AggregateNode.UdaAccumulatorFactory

All Implemented Interfaces:

java.util.function.Supplier<AggregateNode.Accumulator>, AggregateNode.AccumulatorFactory

Enclosing class:

AggregateNode

private static class AggregateNode.UdaAccumulatorFactory
extends java.lang.Object
implements AggregateNode.AccumulatorFactory

Accumulator factory based on a user-defined aggregate function.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) AggregateFunctionImpl	aggFunction
(package private) int	argOrdinal
java.lang.Object	instance
boolean	nullIfEmpty

Constructor Summary

Constructors

Constructor	Description
UdaAccumulatorFactory(AggregateFunctionImpl aggFunction, AggregateCall call, boolean nullIfEmpty)

Method Summary

Modifier and Type	Method	Description
AggregateNode.Accumulator	get()

Methods inherited from class java.lang.Object

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

Field Detail

aggFunction

final AggregateFunctionImpl aggFunction

argOrdinal

final int argOrdinal

instance

public final java.lang.Object instance

nullIfEmpty

public final boolean nullIfEmpty

Constructor Detail

UdaAccumulatorFactory

UdaAccumulatorFactory(AggregateFunctionImpl aggFunction,
                      AggregateCall call,
                      boolean nullIfEmpty)

Method Detail

get

public AggregateNode.Accumulator get()

Specified by:

get in interface java.util.function.Supplier<AggregateNode.Accumulator>