org.apache.beam.runners.flink.translation.functions

Interface AbstractFlinkCombineRunner.FlinkCombiner<K,InputT,AccumT,OutputT>

All Known Implementing Classes:

AbstractFlinkCombineRunner.CompleteFlinkCombiner, AbstractFlinkCombineRunner.FinalFlinkCombiner, AbstractFlinkCombineRunner.PartialFlinkCombiner

Enclosing class:

AbstractFlinkCombineRunner<K,InputT,AccumT,OutputT,W extends org.apache.beam.sdk.transforms.windowing.BoundedWindow>

public static interface AbstractFlinkCombineRunner.FlinkCombiner<K,InputT,AccumT,OutputT>

Adapter interface that allows using a CombineFnBase.GlobalCombineFn to either produce the AccumT as output or to combine several accumulators into an OutputT. The former would be used for a partial combine while the latter is used for the final merging of accumulators.

Method Summary

Modifier and Type	Method and Description
AccumT	addInput(K key, AccumT accumulator, InputT value, org.apache.beam.sdk.options.PipelineOptions options, org.apache.beam.runners.core.SideInputReader sideInputReader, java.util.Collection<? extends org.apache.beam.sdk.transforms.windowing.BoundedWindow> windows)
OutputT	extractOutput(K key, AccumT accumulator, org.apache.beam.sdk.options.PipelineOptions options, org.apache.beam.runners.core.SideInputReader sideInputReader, java.util.Collection<? extends org.apache.beam.sdk.transforms.windowing.BoundedWindow> windows)
AccumT	firstInput(K key, InputT value, org.apache.beam.sdk.options.PipelineOptions options, org.apache.beam.runners.core.SideInputReader sideInputReader, java.util.Collection<? extends org.apache.beam.sdk.transforms.windowing.BoundedWindow> windows)

Method Detail

firstInput

AccumT firstInput(K key,
                  InputT value,
                  org.apache.beam.sdk.options.PipelineOptions options,
                  org.apache.beam.runners.core.SideInputReader sideInputReader,
                  java.util.Collection<? extends org.apache.beam.sdk.transforms.windowing.BoundedWindow> windows)

addInput

AccumT addInput(K key,
                AccumT accumulator,
                InputT value,
                org.apache.beam.sdk.options.PipelineOptions options,
                org.apache.beam.runners.core.SideInputReader sideInputReader,
                java.util.Collection<? extends org.apache.beam.sdk.transforms.windowing.BoundedWindow> windows)

extractOutput

OutputT extractOutput(K key,
                      AccumT accumulator,
                      org.apache.beam.sdk.options.PipelineOptions options,
                      org.apache.beam.runners.core.SideInputReader sideInputReader,
                      java.util.Collection<? extends org.apache.beam.sdk.transforms.windowing.BoundedWindow> windows)