com.google.cloud.dataflow.sdk.runners.worker

Class ReaderFactory

java.lang.Object

com.google.cloud.dataflow.sdk.runners.worker.ReaderFactory

public final class ReaderFactory
extends Object

Constructs a Reader from a Dataflow API Source definition.

A ReaderFactory concrete "subclass" should define a method with the following signature:

 
 static SomeReaderSubclass<T> create(PipelineOptions, CloudObject,
                                     Coder<T>, ExecutionContext);
  

Method Summary

Modifier and Type	Method and Description
static <T> Reader<T>	create(PipelineOptions options, com.google.api.services.dataflow.model.Source cloudSource, ExecutionContext executionContext) Creates a Reader from a Dataflow API Source definition.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static <T> Reader<T> create(@Nullable
                                   PipelineOptions options,
                                   com.google.api.services.dataflow.model.Source cloudSource,
                                   @Nullable
                                   ExecutionContext executionContext)
                            throws Exception

Creates a Reader from a Dataflow API Source definition.

Throws:

Exception - if the source could not be decoded and constructed