DoFnWithContext.ProcessElement (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. See Migrating from 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.transforms

Annotation Type DoFnWithContext.ProcessElement

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  @Documented
   @Retention(value=RUNTIME)
   @Target(value=METHOD)
  public static @interface DoFnWithContext.ProcessElement

  Annotation for the method to use for processing elements. A subclass of DoFnWithContext must have a method with this annotation satisfying the following constraints in order for it to be executable:

  • It must have at least one argument.
  • Its first argument must be a DoFnWithContext.ProcessContext.
  • Its remaining arguments must be BoundedWindow, or WindowingInternals<InputT, OutputT>.