POutputValueBase (Google Cloud Dataflow SDK 1.9.1 API)

Google Cloud Dataflow SDK for Java, version 1.9.1

Warning: Cloud Dataflow SDK 1.x for Java is unsupported as of October 16, 2018. See Migrating from Cloud Dataflow SDK 1.x for Java for migration guidance.

Note: If you are using Cloud Dataflow SDK version 2.x, see the Apache Beam API reference documentation.

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 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

    All Methods Instance Methods Concrete Methods 

    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 com.google.cloud.dataflow.sdk.values.POutput

      expand

• • 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(com.google.cloud.dataflow.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