Class CoGroup.ExpandCrossProduct
- java.lang.Object
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- org.apache.beam.sdk.transforms.PTransform<PCollectionTuple,PCollection<Row>>
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- org.apache.beam.sdk.schemas.transforms.CoGroup.ExpandCrossProduct
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- All Implemented Interfaces:
java.io.Serializable
,HasDisplayData
- Enclosing class:
- CoGroup
public static class CoGroup.ExpandCrossProduct extends PTransform<PCollectionTuple,PCollection<Row>>
APTransform
that calculates the cross-product join.- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class org.apache.beam.sdk.transforms.PTransform
name, resourceHints
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description PCollection<Row>
expand(PCollectionTuple input)
Override this method to specify how thisPTransform
should be expanded on the givenInputT
.CoGroup.ExpandCrossProduct
join(java.lang.String tag, CoGroup.By clause)
Select the following fields for the specified PCollection with the specified join args.-
Methods inherited from class org.apache.beam.sdk.transforms.PTransform
compose, compose, getAdditionalInputs, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setResourceHints, toString, validate, validate
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Method Detail
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join
public CoGroup.ExpandCrossProduct join(java.lang.String tag, CoGroup.By clause)
Select the following fields for the specified PCollection with the specified join args.Each PCollection in the input must have fields specified for the join key.
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expand
public PCollection<Row> expand(PCollectionTuple input)
Description copied from class:PTransform
Override this method to specify how thisPTransform
should be expanded on the givenInputT
.NOTE: This method should not be called directly. Instead apply the
PTransform
should be applied to theInputT
using theapply
method.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).
- Specified by:
expand
in classPTransform<PCollectionTuple,PCollection<Row>>
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