org.apache.beam.sdk.transforms

Class ParDo.Unbound

java.lang.Object

org.apache.beam.sdk.transforms.ParDo.Unbound

Enclosing class:

ParDo

public static class ParDo.Unbound
extends Object

An incomplete ParDo transform, with unbound input/output types.

Before being applied, of(org.apache.beam.sdk.transforms.DoFn<InputT, OutputT>) must be invoked to specify the DoFn to invoke, which will also bind the input/output types of this PTransform.

Method Summary

Modifier and Type	Method and Description
<InputT,OutputT> ParDo.Bound<InputT,OutputT>	of(DoFn<InputT,OutputT> fn) Returns a new ParDo PTransform that's like this transform but that will invoke the given DoFn function, and that has its input and output types bound.
<InputT,OutputT> ParDo.Bound<InputT,OutputT>	of(DoFnWithContext<InputT,OutputT> fn) Returns a new ParDo PTransform that's like this transform but which will invoke the given DoFnWithContext function, and which has its input and output types bound.
<OutputT> ParDo.UnboundMulti<OutputT>	withOutputTags(TupleTag<OutputT> mainOutputTag, TupleTagList sideOutputTags) Returns a new multi-output ParDo transform that's like this transform but with the specified main and side output tags.
ParDo.Unbound	withSideInputs(Iterable<? extends PCollectionView<?>> sideInputs) Returns a new ParDo transform that is like this transform but with the specified additional side inputs.
ParDo.Unbound	withSideInputs(PCollectionView<?>... sideInputs) Returns a new ParDo transform that's like this transform but with the specified additional side inputs.

Methods inherited from class java.lang.Object

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

Method Detail

withSideInputs

public ParDo.Unbound withSideInputs(PCollectionView<?>... sideInputs)

Returns a new ParDo transform that's like this transform but with the specified additional side inputs. Does not modify this transform. The resulting transform is still incomplete.

See the discussion of Side Inputs above and on ParDo.withSideInputs(org.apache.beam.sdk.values.PCollectionView<?>...) for more explanation.

withSideInputs

public ParDo.Unbound withSideInputs(Iterable<? extends PCollectionView<?>> sideInputs)

Returns a new ParDo transform that is like this transform but with the specified additional side inputs. Does not modify this transform. The resulting transform is still incomplete.

See the discussion of Side Inputs above and on ParDo.withSideInputs(org.apache.beam.sdk.values.PCollectionView<?>...) for more explanation.

withOutputTags

public <OutputT> ParDo.UnboundMulti<OutputT> withOutputTags(TupleTag<OutputT> mainOutputTag,
                                                            TupleTagList sideOutputTags)

Returns a new multi-output ParDo transform that's like this transform but with the specified main and side output tags. Does not modify this transform. The resulting transform is still incomplete.

See the discussion of Side Outputs above and on ParDo.withOutputTags(org.apache.beam.sdk.values.TupleTag<OutputT>, org.apache.beam.sdk.values.TupleTagList) for more explanation.

of

public <InputT,OutputT> ParDo.Bound<InputT,OutputT> of(DoFn<InputT,OutputT> fn)

Returns a new ParDo PTransform that's like this transform but that will invoke the given DoFn function, and that has its input and output types bound. Does not modify this transform. The resulting PTransform is sufficiently specified to be applied, but more properties can still be specified.

of

public <InputT,OutputT> ParDo.Bound<InputT,OutputT> of(DoFnWithContext<InputT,OutputT> fn)

Returns a new ParDo PTransform that's like this transform but which will invoke the given DoFnWithContext function, and which has its input and output types bound. Does not modify this transform. The resulting PTransform is sufficiently specified to be applied, but more properties can still be specified.