org.apache.beam.runners.spark.aggregators

Class NamedAggregators.CombineFunctionState<InputT,InterT,OutputT>

java.lang.Object

org.apache.beam.runners.spark.aggregators.NamedAggregators.CombineFunctionState<InputT,InterT,OutputT>

Type Parameters:

InputT - Input data type

InterT - Intermediate data type (useful for averages)

OutputT - Output data type

All Implemented Interfaces:

Serializable, NamedAggregators.State<InputT,InterT,OutputT>

Enclosing class:

NamedAggregators

public static class NamedAggregators.CombineFunctionState<InputT,InterT,OutputT>
extends Object
implements NamedAggregators.State<InputT,InterT,OutputT>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CombineFunctionState(Combine.CombineFn<InputT,InterT,OutputT> combineFn, Coder<InputT> inCoder, SparkRuntimeContext ctxt)

Method Summary

Modifier and Type	Method and Description
InterT	current()
Combine.CombineFn<InputT,InterT,OutputT>	getCombineFn()
NamedAggregators.State<InputT,InterT,OutputT>	merge(NamedAggregators.State<InputT,InterT,OutputT> other)
OutputT	render()
void	update(InputT element)

Methods inherited from class java.lang.Object

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

Constructor Detail

CombineFunctionState

public CombineFunctionState(Combine.CombineFn<InputT,InterT,OutputT> combineFn,
                            Coder<InputT> inCoder,
                            SparkRuntimeContext ctxt)

Method Detail

update

public void update(InputT element)

Specified by:

update in interface NamedAggregators.State<InputT,InterT,OutputT>

Parameters:

element - new element to update state

merge

public NamedAggregators.State<InputT,InterT,OutputT> merge(NamedAggregators.State<InputT,InterT,OutputT> other)

Specified by:

merge in interface NamedAggregators.State<InputT,InterT,OutputT>

current

public InterT current()

Specified by:

current in interface NamedAggregators.State<InputT,InterT,OutputT>

render

public OutputT render()

Specified by:

render in interface NamedAggregators.State<InputT,InterT,OutputT>

getCombineFn

public Combine.CombineFn<InputT,InterT,OutputT> getCombineFn()

Specified by:

getCombineFn in interface NamedAggregators.State<InputT,InterT,OutputT>