com.google.cloud.dataflow.sdk.util.state

Interface CombiningValueStateInternal<InputT,AccumT,OutputT>

Type Parameters:

InputT - the type of values added to the state

AccumT - the type of accumulator

OutputT - the type of value extracted from the state

All Superinterfaces:

CombiningValueState<InputT,OutputT>, MergeableState<InputT,OutputT>, State

public interface CombiningValueStateInternal<InputT,AccumT,OutputT>
extends CombiningValueState<InputT,OutputT>

State for a single value that is managed by a Combine.CombineFn. This is an internal extension to CombiningValueState that includes the AccumT type.

Method Summary

Modifier and Type	Method and Description
void	addAccum(AccumT accum) Add an accumulator to this combining value.
StateContents<AccumT>	getAccum() Read the merged accumulator for this combining value.

Methods inherited from interface com.google.cloud.dataflow.sdk.util.state.MergeableState

add, get, isEmpty

Methods inherited from interface com.google.cloud.dataflow.sdk.util.state.State

clear

Method Detail

getAccum

StateContents<AccumT> getAccum()

Read the merged accumulator for this combining value.

addAccum

void addAccum(AccumT accum)

Add an accumulator to this combining value. Depending on implementation this may immediately merge it with the previous accumulator, or may buffer this accumulator for a future merge.