RecordingPipelineVisitor (Google Cloud Dataflow SDK 1.9.1 API)

Google Cloud Dataflow SDK for Java, version 1.9.1

Warning: Dataflow SDK 1.x for Java is unsupported as of October 16, 2018. After August 12, 2020, you can use unsupported SDKs temporarily while you upgrade your pipelines. For more information, see Using an unsupported SDK.

For information on migrating from the 1.x SDK, see Migrating from Dataflow SDK 1.x for Java.

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

com.google.cloud.dataflow.sdk.runners

Class RecordingPipelineVisitor

• java.lang.Object
• • com.google.cloud.dataflow.sdk.runners.RecordingPipelineVisitor

• All Implemented Interfaces:

  Pipeline.PipelineVisitor

  ---

  
  

  public class RecordingPipelineVisitor
  extends Object
  implements Pipeline.PipelineVisitor

  Provides a simple Pipeline.PipelineVisitor that records the transformation tree.

  Provided for internal unit tests.

• • Field Summary

    Fields 

    Modifier and Type	Field and Description
    List<PTransform<?,?>>	transforms
    List<PValue>	values

  • Constructor Summary

    Constructors 

    Constructor and Description
    RecordingPipelineVisitor()

  • Method Summary

    All Methods Instance Methods Concrete Methods 

    Modifier and Type	Method and Description
    void	enterCompositeTransform(TransformTreeNode node) Called for each composite transform after all topological predecessors have been visited but before any of its component transforms.
    void	leaveCompositeTransform(TransformTreeNode node) Called for each composite transform after all of its component transforms and their outputs have been visited.
    void	visitTransform(TransformTreeNode node) Called for each primitive transform after all of its topological predecessors and inputs have been visited.
    void	visitValue(PValue value, TransformTreeNode producer) Called for each value after the transform that produced the value has been visited.

    • Methods inherited from class java.lang.Object

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

• • Field Detail

    • transforms

      public final List<PTransform<?,?>> transforms

    • values

      public final List<PValue> values

  • Constructor Detail

    • RecordingPipelineVisitor

      public RecordingPipelineVisitor()

  • Method Detail

    • enterCompositeTransform

      public void enterCompositeTransform(TransformTreeNode node)

      Description copied from interface: Pipeline.PipelineVisitor
      Called for each composite transform after all topological predecessors have been visited but before any of its component transforms.

      Specified by:

      enterCompositeTransform in interface Pipeline.PipelineVisitor

    • leaveCompositeTransform

      public void leaveCompositeTransform(TransformTreeNode node)

      Description copied from interface: Pipeline.PipelineVisitor
      Called for each composite transform after all of its component transforms and their outputs have been visited.

      Specified by:

      leaveCompositeTransform in interface Pipeline.PipelineVisitor

    • visitTransform

      public void visitTransform(TransformTreeNode node)

      Description copied from interface: Pipeline.PipelineVisitor
      Called for each primitive transform after all of its topological predecessors and inputs have been visited.

      Specified by:

      visitTransform in interface Pipeline.PipelineVisitor

    • visitValue

      public void visitValue(PValue value,
                             TransformTreeNode producer)

      Description copied from interface: Pipeline.PipelineVisitor
      Called for each value after the transform that produced the value has been visited.

      Specified by:

      visitValue in interface Pipeline.PipelineVisitor