org.apache.beam.sdk.transforms

Class CombineFns.ComposeKeyedCombineFnBuilder

java.lang.Object

org.apache.beam.sdk.transforms.CombineFns.ComposeKeyedCombineFnBuilder

Enclosing class:

CombineFns

public static class CombineFns.ComposeKeyedCombineFnBuilder
extends Object

A builder class to construct a composed CombineFnBase.PerKeyCombineFn.

Constructor Summary

Constructors

Constructor and Description
ComposeKeyedCombineFnBuilder()

Method Summary

Modifier and Type	Method and Description
<K,DataT,InputT,OutputT> CombineFns.ComposedKeyedCombineFn<DataT,K>	with(SimpleFunction<DataT,InputT> extractInputFn, Combine.CombineFn<InputT,?,OutputT> combineFn, TupleTag<OutputT> outputTag) Returns a CombineFns.ComposedKeyedCombineFn that can take additional PerKeyCombineFns and apply them as a single combine function.
<K,DataT,InputT,OutputT> CombineFns.ComposedKeyedCombineFn<DataT,K>	with(SimpleFunction<DataT,InputT> extractInputFn, Combine.KeyedCombineFn<K,InputT,?,OutputT> keyedCombineFn, TupleTag<OutputT> outputTag) Returns a CombineFns.ComposedKeyedCombineFn that can take additional PerKeyCombineFns and apply them as a single combine function.
<K,DataT,InputT,OutputT> CombineFns.ComposedKeyedCombineFnWithContext<DataT,K>	with(SimpleFunction<DataT,InputT> extractInputFn, CombineWithContext.CombineFnWithContext<InputT,?,OutputT> combineFnWithContext, TupleTag<OutputT> outputTag) Returns a CombineFns.ComposedKeyedCombineFnWithContext that can take additional PerKeyCombineFns and apply them as a single combine function.
<K,DataT,InputT,OutputT> CombineFns.ComposedKeyedCombineFnWithContext<DataT,K>	with(SimpleFunction<DataT,InputT> extractInputFn, CombineWithContext.KeyedCombineFnWithContext<K,InputT,?,OutputT> keyedCombineFnWithContext, TupleTag<OutputT> outputTag) Returns a CombineFns.ComposedKeyedCombineFnWithContext that can take additional PerKeyCombineFns and apply them as a single combine function.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComposeKeyedCombineFnBuilder

public ComposeKeyedCombineFnBuilder()

Method Detail

with

public <K,DataT,InputT,OutputT> CombineFns.ComposedKeyedCombineFn<DataT,K> with(SimpleFunction<DataT,InputT> extractInputFn,
                                                                                Combine.KeyedCombineFn<K,InputT,?,OutputT> keyedCombineFn,
                                                                                TupleTag<OutputT> outputTag)

Returns a CombineFns.ComposedKeyedCombineFn that can take additional PerKeyCombineFns and apply them as a single combine function.

The CombineFns.ComposedKeyedCombineFn extracts inputs from DataT with the extractInputFn and combines them with the keyedCombineFn, and then it outputs each combined value with a TupleTag to a CombineFns.CoCombineResult.

with

public <K,DataT,InputT,OutputT> CombineFns.ComposedKeyedCombineFnWithContext<DataT,K> with(SimpleFunction<DataT,InputT> extractInputFn,
                                                                                           CombineWithContext.KeyedCombineFnWithContext<K,InputT,?,OutputT> keyedCombineFnWithContext,
                                                                                           TupleTag<OutputT> outputTag)

Returns a CombineFns.ComposedKeyedCombineFnWithContext that can take additional PerKeyCombineFns and apply them as a single combine function.

The CombineFns.ComposedKeyedCombineFnWithContext extracts inputs from DataT with the extractInputFn and combines them with the keyedCombineFnWithContext, and then it outputs each combined value with a TupleTag to a CombineFns.CoCombineResult.

with

public <K,DataT,InputT,OutputT> CombineFns.ComposedKeyedCombineFn<DataT,K> with(SimpleFunction<DataT,InputT> extractInputFn,
                                                                                Combine.CombineFn<InputT,?,OutputT> combineFn,
                                                                                TupleTag<OutputT> outputTag)

Returns a CombineFns.ComposedKeyedCombineFn that can take additional PerKeyCombineFns and apply them as a single combine function.

with

public <K,DataT,InputT,OutputT> CombineFns.ComposedKeyedCombineFnWithContext<DataT,K> with(SimpleFunction<DataT,InputT> extractInputFn,
                                                                                           CombineWithContext.CombineFnWithContext<InputT,?,OutputT> combineFnWithContext,
                                                                                           TupleTag<OutputT> outputTag)

Returns a CombineFns.ComposedKeyedCombineFnWithContext that can take additional PerKeyCombineFns and apply them as a single combine function.