Package org.apache.beam.runners.spark.translation.streaming

Class CreateStreamingSparkView<ElemT,ViewT>

java.lang.Object

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

org.apache.beam.runners.spark.translation.streaming.CreateStreamingSparkView<ElemT,ViewT>

All Implemented Interfaces:

Serializable, HasDisplayData

public class CreateStreamingSparkView<ElemT,ViewT>
extends PTransform<PCollection<ElemT>,PCollection<ElemT>>

Spark streaming overrides for various view (side input) transforms.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CreateStreamingSparkView.CreateSparkPCollectionView<ElemT,ViewT>	Creates a primitive PCollectionView.
static class	CreateStreamingSparkView.Factory<ElemT,ViewT>

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CREATE_STREAMING_SPARK_VIEW_URN

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

annotations, displayData, name, resourceHints

Constructor Summary

Constructors

Constructor	Description
CreateStreamingSparkView(PCollectionView<ViewT> view)

Method Summary

Modifier and Type	Method	Description
PCollection<ElemT>	expand(PCollection<ElemT> input)	Override this method to specify how this PTransform should be expanded on the given InputT.

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

addAnnotation, compose, compose, getAdditionalInputs, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setDisplayData, setResourceHints, toString, validate, validate

Methods inherited from class java.lang.Object

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

Field Details

CREATE_STREAMING_SPARK_VIEW_URN

public static final String CREATE_STREAMING_SPARK_VIEW_URN

See Also:

• Constant Field Values

Constructor Details

CreateStreamingSparkView

public CreateStreamingSparkView(PCollectionView<ViewT> view)

Method Details

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>>