org.apache.beam.runners.dataflow

Class DataflowRunner.StreamingPCollectionViewWriterFn<T>

java.lang.Object

org.apache.beam.sdk.transforms.DoFn<java.lang.Iterable<T>,T>

org.apache.beam.runners.dataflow.DataflowRunner.StreamingPCollectionViewWriterFn<T>

All Implemented Interfaces:

java.io.Serializable, org.apache.beam.sdk.transforms.display.HasDisplayData

Enclosing class:

DataflowRunner

@Internal
public static class DataflowRunner.StreamingPCollectionViewWriterFn<T>
extends org.apache.beam.sdk.transforms.DoFn<java.lang.Iterable<T>,T>

A marker DoFn for writing the contents of a PCollection to a streaming PCollectionView backend implementation.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.beam.sdk.transforms.DoFn

org.apache.beam.sdk.transforms.DoFn.BoundedPerElement, org.apache.beam.sdk.transforms.DoFn.BundleFinalizer, org.apache.beam.sdk.transforms.DoFn.Element, org.apache.beam.sdk.transforms.DoFn.FieldAccess, org.apache.beam.sdk.transforms.DoFn.FinishBundle, org.apache.beam.sdk.transforms.DoFn.FinishBundleContext, org.apache.beam.sdk.transforms.DoFn.GetInitialRestriction, org.apache.beam.sdk.transforms.DoFn.GetRestrictionCoder, org.apache.beam.sdk.transforms.DoFn.GetSize, org.apache.beam.sdk.transforms.DoFn.MultiOutputReceiver, org.apache.beam.sdk.transforms.DoFn.NewTracker, org.apache.beam.sdk.transforms.DoFn.OnTimer, org.apache.beam.sdk.transforms.DoFn.OnTimerContext, org.apache.beam.sdk.transforms.DoFn.OnWindowExpiration, org.apache.beam.sdk.transforms.DoFn.OutputReceiver<T>, org.apache.beam.sdk.transforms.DoFn.ProcessContext, org.apache.beam.sdk.transforms.DoFn.ProcessContinuation, org.apache.beam.sdk.transforms.DoFn.ProcessElement, org.apache.beam.sdk.transforms.DoFn.RequiresStableInput, org.apache.beam.sdk.transforms.DoFn.Setup, org.apache.beam.sdk.transforms.DoFn.SideInput, org.apache.beam.sdk.transforms.DoFn.SplitRestriction, org.apache.beam.sdk.transforms.DoFn.StartBundle, org.apache.beam.sdk.transforms.DoFn.StartBundleContext, org.apache.beam.sdk.transforms.DoFn.StateId, org.apache.beam.sdk.transforms.DoFn.Teardown, org.apache.beam.sdk.transforms.DoFn.TimerId, org.apache.beam.sdk.transforms.DoFn.Timestamp, org.apache.beam.sdk.transforms.DoFn.UnboundedPerElement, org.apache.beam.sdk.transforms.DoFn.WindowedContext

Method Summary

Modifier and Type	Method and Description
static <T> DataflowRunner.StreamingPCollectionViewWriterFn<T>	create(org.apache.beam.sdk.values.PCollectionView<?> view, org.apache.beam.sdk.coders.Coder<T> dataCoder)
org.apache.beam.sdk.coders.Coder<T>	getDataCoder()
org.apache.beam.sdk.values.PCollectionView<?>	getView()
void	processElement(org.apache.beam.sdk.transforms.DoFn.ProcessContext c, org.apache.beam.sdk.transforms.windowing.BoundedWindow w)

Methods inherited from class org.apache.beam.sdk.transforms.DoFn

getAllowedTimestampSkew, getInputTypeDescriptor, getOutputTypeDescriptor, populateDisplayData, prepareForProcessing

Methods inherited from class java.lang.Object

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

Method Detail

create

public static <T> DataflowRunner.StreamingPCollectionViewWriterFn<T> create(org.apache.beam.sdk.values.PCollectionView<?> view,
                                                                            org.apache.beam.sdk.coders.Coder<T> dataCoder)

getView

public org.apache.beam.sdk.values.PCollectionView<?> getView()

getDataCoder

public org.apache.beam.sdk.coders.Coder<T> getDataCoder()

processElement

@DoFn.ProcessElement
public void processElement(org.apache.beam.sdk.transforms.DoFn.ProcessContext c,
                                                org.apache.beam.sdk.transforms.windowing.BoundedWindow w)
                                         throws java.lang.Exception

Throws:

java.lang.Exception