Package org.apache.beam.runners.dataflow

Class DataflowRunner.StreamingPCollectionViewWriterFn<T>

java.lang.Object

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

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

All Implemented Interfaces:

Serializable, HasDisplayData

Enclosing class:

DataflowRunner

public static class DataflowRunner.StreamingPCollectionViewWriterFn<T>
extends DoFn<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

DoFn.AlwaysFetched, DoFn.BoundedPerElement, DoFn.BundleFinalizer, DoFn.Element, DoFn.FieldAccess, DoFn.FinishBundle, DoFn.FinishBundleContext, DoFn.GetInitialRestriction, DoFn.GetInitialWatermarkEstimatorState, DoFn.GetRestrictionCoder, DoFn.GetSize, DoFn.GetWatermarkEstimatorStateCoder, DoFn.Key, DoFn.MultiOutputReceiver, DoFn.NewTracker, DoFn.NewWatermarkEstimator, DoFn.OnTimer, DoFn.OnTimerContext, DoFn.OnTimerFamily, DoFn.OnWindowExpiration, DoFn.OnWindowExpirationContext, DoFn.OutputReceiver<T>, DoFn.ProcessContext, DoFn.ProcessContinuation, DoFn.ProcessElement, DoFn.RequiresStableInput, DoFn.RequiresTimeSortedInput, DoFn.Restriction, DoFn.Setup, DoFn.SideInput, DoFn.SplitRestriction, DoFn.StartBundle, DoFn.StartBundleContext, DoFn.StateId, DoFn.Teardown, DoFn.TimerFamily, DoFn.TimerId, DoFn.Timestamp, DoFn.TruncateRestriction, DoFn.UnboundedPerElement, DoFn.WatermarkEstimatorState, DoFn.WindowedContext

Method Summary

Modifier and Type	Method	Description
static <T> DataflowRunner.StreamingPCollectionViewWriterFn<T>	create(PCollectionView<?> view, Coder<T> dataCoder)
Coder<T>	getDataCoder()
PCollectionView<?>	getView()
void	processElement(DoFn<Iterable<T>,T>.ProcessContext c, 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 Details

create

public static <T>
DataflowRunner.StreamingPCollectionViewWriterFn<T> create(PCollectionView<?> view,
 Coder<T> dataCoder)

getView

public PCollectionView<?> getView()

getDataCoder

public Coder<T> getDataCoder()

processElement

@ProcessElement
public void processElement(DoFn<Iterable<T>,T>.ProcessContext c,
 BoundedWindow w)
                    throws Exception

Throws:

Exception