com.google.cloud.dataflow.sdk.values

Class POutputValueBase

java.lang.Object

com.google.cloud.dataflow.sdk.values.POutputValueBase

All Implemented Interfaces:

POutput

Direct Known Subclasses:

PDone, PValueBase

public abstract class POutputValueBase
extends java.lang.Object
implements POutput

A POutputValueBase is the abstract base class of PTransform outputs.

A PValueBase that adds tracking of its producing PTransform.

For internal use.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	POutputValueBase()

Method Summary

Methods

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.cloud.dataflow.sdk.values.POutput

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Constructor Detail

POutputValueBase

protected POutputValueBase()

Method Detail

getProducingTransformInternal

public PTransform<?,?> getProducingTransformInternal()

Returns the PTransform that this POutputValueBase is an output of.

For internal use only.

recordAsOutput

public void recordAsOutput(Pipeline pipeline,
                  PTransform<?,?> transform)

Records that this POutputValueBase is an output with the given name of the given PTransform in the given Pipeline.

To be invoked only by POutput.recordAsOutput(com.google.cloud.dataflow.sdk.Pipeline, com.google.cloud.dataflow.sdk.transforms.PTransform<?, ?>) 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