org.apache.beam.sdk.values

Class POutputValueBase

java.lang.Object

org.apache.beam.sdk.values.POutputValueBase

All Implemented Interfaces:

POutput

Direct Known Subclasses:

PDone, PValueBase

public abstract class POutputValueBase
extends Object
implements POutput

A POutputValueBase is the abstract base class of PTransform outputs.

A PValueBase that adds tracking of its producing AppliedPTransform.

For internal use.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	POutputValueBase() No-arg constructor for Java serialization only.
protected	POutputValueBase(Pipeline pipeline)

Method Summary

Modifier and Type	Method and Description
void	finishSpecifyingOutput() Default behavior for finishSpecifyingOutput() is to do nothing.
Pipeline	getPipeline() Returns the owning Pipeline of this POutput.
AppliedPTransform<?,?,?>	getProducingTransformInternal() Returns the AppliedPTransform that this POutputValueBase is an output of.
void	recordAsOutput(AppliedPTransform<?,?,?> transform) Records that this POutputValueBase is an output with the given name of the given AppliedPTransform.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.beam.sdk.values.POutput

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Constructor Detail

POutputValueBase

protected POutputValueBase(Pipeline pipeline)

POutputValueBase

protected POutputValueBase()

No-arg constructor for Java serialization only. The resulting POutputValueBase is unlikely to be valid.

Method Detail

getPipeline

public Pipeline getPipeline()

Description copied from interface: POutput

Returns the owning Pipeline of this POutput.

Specified by:

getPipeline in interface POutput

getProducingTransformInternal

public AppliedPTransform<?,?,?> getProducingTransformInternal()

Returns the AppliedPTransform that this POutputValueBase is an output of.

For internal use only.

recordAsOutput

public void recordAsOutput(AppliedPTransform<?,?,?> transform)

Records that this POutputValueBase is an output with the given name of the given AppliedPTransform.

To be invoked only by POutput.recordAsOutput(org.apache.beam.sdk.transforms.AppliedPTransform<?, ?, ?>) implementations. Not to be invoked directly by user code.

Specified by:

recordAsOutput in interface POutput

finishSpecifyingOutput

public void finishSpecifyingOutput()

Default behavior for finishSpecifyingOutput() is to do nothing. Override if your PValue requires finalization.

Specified by:

finishSpecifyingOutput in interface POutput