com.google.cloud.dataflow.sdk.transforms

Class IntraBundleParallelization.Bound<I,O>

java.lang.Object

com.google.cloud.dataflow.sdk.transforms.PTransform<PCollection<? extends I>,PCollection<O>>

com.google.cloud.dataflow.sdk.transforms.IntraBundleParallelization.Bound<I,O>

Type Parameters:

I - the type of the (main) input PCollection elements

O - the type of the (main) output PCollection elements

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

IntraBundleParallelization

public static class IntraBundleParallelization.Bound<I,O>
extends PTransform<PCollection<? extends I>,PCollection<O>>

A PTransform that, when applied to a PCollection<I>, invokes a user-specified DoFn<I, O> on all its elements, with all its outputs collected into an output PCollection<O>.

Note that the specified doFn needs to be thread safe.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.google.cloud.dataflow.sdk.transforms.PTransform

name

Method Summary

Methods

Modifier and Type	Method and Description
PCollection<O>	apply(PCollection<? extends I> input) Applies this PTransform on the given Input, and returns its Output.
<I,O> IntraBundleParallelization.Bound<I,O>	of(DoFn<I,O> doFn) Returns a new IntraBundleParallelization PTransform like this one with the specified DoFn.
IntraBundleParallelization.Bound<I,O>	withMaxParallelism(int maxParallelism) Returns a new IntraBundleParallelization PTransform like this one with the specified maximum concurrency level.

Methods inherited from class com.google.cloud.dataflow.sdk.transforms.PTransform

finishSpecifyingInternal, getDefaultName, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, setName, setPipeline, toString, validate, withName

Methods inherited from class java.lang.Object

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

Method Detail

withMaxParallelism

public IntraBundleParallelization.Bound<I,O> withMaxParallelism(int maxParallelism)

Returns a new IntraBundleParallelization PTransform like this one with the specified maximum concurrency level.

of

public <I,O> IntraBundleParallelization.Bound<I,O> of(DoFn<I,O> doFn)

Returns a new IntraBundleParallelization PTransform like this one with the specified DoFn.

Note that the specified doFn needs to be thread safe.

apply

public PCollection<O> apply(PCollection<? extends I> input)

Description copied from class: PTransform

Applies this PTransform on the given Input, and returns its Output.

Composite transforms, which are defined in terms of other transforms, should return the output of one of the composed transforms. Non-composite transforms, which do not apply any transforms internally, should return a new unbound output and register evaluators (via backend-specific registration methods).

The default implementation throws an exception. A derived class must either implement apply, or else each runner must supply a custom implementation via PipelineRunner.apply(com.google.cloud.dataflow.sdk.transforms.PTransform<Input, Output>, Input).

Overrides:

apply in class PTransform<PCollection<? extends I>,PCollection<O>>