org.apache.beam.runners.apex

Class ApexRunner.CreateApexPCollectionView<ElemT,ViewT>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<ElemT>,PCollection<ElemT>>

org.apache.beam.runners.apex.ApexRunner.CreateApexPCollectionView<ElemT,ViewT>

Type Parameters:

ElemT - The type of the elements of the input PCollection

ViewT - The type associated with the PCollectionView used as a side input

All Implemented Interfaces:

java.io.Serializable, HasDisplayData

Enclosing class:

ApexRunner

public static class ApexRunner.CreateApexPCollectionView<ElemT,ViewT>
extends PTransform<PCollection<ElemT>,PCollection<ElemT>>

Creates a primitive PCollectionView.

For internal use only by runner implementors.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.beam.sdk.transforms.PTransform

name

Method Summary

Modifier and Type	Method and Description
PCollection<ElemT>	expand(PCollection<ElemT> input) Override this method to specify how this PTransform should be expanded on the given InputT.
PCollectionView<ViewT>	getView()
static <ElemT,ViewT> ApexRunner.CreateApexPCollectionView<ElemT,ViewT>	of(PCollectionView<ViewT> view)

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

compose, getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, populateDisplayData, toString, validate

Methods inherited from class java.lang.Object

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

Method Detail

of

public static <ElemT,ViewT> ApexRunner.CreateApexPCollectionView<ElemT,ViewT> of(PCollectionView<ViewT> view)

expand

public PCollection<ElemT> expand(PCollection<ElemT> input)

Description copied from class: PTransform

Override this method to specify how this PTransform should be expanded on the given InputT.

NOTE: This method should not be called directly. Instead apply the PTransform should be applied to the InputT using the apply method.

Composite transforms, which are defined in terms of other transforms, should return the output of one of the composed transforms. Non-composite transforms, which do not apply any transforms internally, should return a new unbound output and register evaluators (via backend-specific registration methods).

Specified by:

expand in class PTransform<PCollection<ElemT>,PCollection<ElemT>>

getView

public PCollectionView<ViewT> getView()