Package org.apache.beam.runners.dataflow

Class PrimitiveParDoSingleFactory.ParDoSingle<InputT,OutputT>

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<? extends InputT>,PCollection<OutputT>>

org.apache.beam.sdk.util.construction.ForwardingPTransform<PCollection<? extends InputT>,PCollection<OutputT>>

org.apache.beam.runners.dataflow.PrimitiveParDoSingleFactory.ParDoSingle<InputT,OutputT>

All Implemented Interfaces:

Serializable, HasDisplayData

Enclosing class:

PrimitiveParDoSingleFactory<InputT,OutputT>

public static class PrimitiveParDoSingleFactory.ParDoSingle<InputT,OutputT>
extends org.apache.beam.sdk.util.construction.ForwardingPTransform<PCollection<? extends InputT>,PCollection<OutputT>>

A single-output primitive ParDo.

See Also:

• Serialized Form

Field Summary

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

annotations, displayData, name, resourceHints

Method Summary

Modifier and Type	Method	Description
protected PTransform<PCollection<? extends InputT>,PCollection<OutputT>>	delegate()
PCollection<OutputT>	expand(PCollection<? extends InputT> input)	Override this method to specify how this PTransform should be expanded on the given InputT.
Map<TupleTag<?>,PValue>	getAdditionalInputs()	Returns all PValues that are consumed as inputs to this PTransform that are independent of the expansion of the PTransform within PTransform.expand(PInput).
DoFn<InputT,OutputT>	getFn()
TupleTag<?>	getMainOutputTag()
Map<String,PCollectionView<?>>	getSideInputs()

Methods inherited from class org.apache.beam.sdk.util.construction.ForwardingPTransform

getName, populateDisplayData, validate

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

addAnnotation, compose, compose, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getResourceHints, setDisplayData, setResourceHints, toString, validate

Methods inherited from class java.lang.Object

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

Method Details

expand

public PCollection<OutputT> expand(PCollection<? extends InputT> 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).

Overrides:

expand in class org.apache.beam.sdk.util.construction.ForwardingPTransform<PCollection<? extends InputT>,PCollection<OutputT>>

getFn

public DoFn<InputT,OutputT> getFn()

getMainOutputTag

public TupleTag<?> getMainOutputTag()

getSideInputs

public Map<String,PCollectionView<?>> getSideInputs()

getAdditionalInputs

public Map<TupleTag<?>,PValue> getAdditionalInputs()

Description copied from class: PTransform

Returns all PValues that are consumed as inputs to this PTransform that are independent of the expansion of the PTransform within PTransform.expand(PInput).

For example, this can contain any side input consumed by this PTransform.

Overrides:

getAdditionalInputs in class org.apache.beam.sdk.util.construction.ForwardingPTransform<PCollection<? extends InputT>,PCollection<OutputT>>

delegate

protected PTransform<PCollection<? extends InputT>,PCollection<OutputT>> delegate()

Specified by:

delegate in class org.apache.beam.sdk.util.construction.ForwardingPTransform<PCollection<? extends InputT>,PCollection<OutputT>>