org.apache.beam.sdk.transforms

Interface DoFnWithContext.ExtraContextFactory<InputT,OutputT>

Enclosing class:

DoFnWithContext<InputT,OutputT>

public static interface DoFnWithContext.ExtraContextFactory<InputT,OutputT>

Interface for runner implementors to provide implementations of extra context information.

The methods on this interface are called by DoFnReflector before invoking an annotated DoFnWithContext.StartBundle, DoFnWithContext.ProcessElement or DoFnWithContext.FinishBundle method that has indicated it needs the given extra context.

In the case of DoFnWithContext.ProcessElement it is called once per invocation of DoFnWithContext.ProcessElement.

Method Summary

Modifier and Type	Method and Description
BoundedWindow	window() Construct the BoundedWindow to use within a DoFnWithContext that needs it.
org.apache.beam.sdk.util.WindowingInternals<InputT,OutputT>	windowingInternals() Construct the WindowingInternals to use within a DoFnWithContext that needs it.

Method Detail

window

BoundedWindow window()

Construct the BoundedWindow to use within a DoFnWithContext that needs it. This is called if the DoFnWithContext.ProcessElement method has a parameter of type BoundedWindow.

Returns:

BoundedWindow of the element currently being processed.

windowingInternals

org.apache.beam.sdk.util.WindowingInternals<InputT,OutputT> windowingInternals()

Construct the WindowingInternals to use within a DoFnWithContext that needs it. This is called if the DoFnWithContext.ProcessElement method has a parameter of type WindowingInternals.