Class Join.LeftOuterJoin<K,V1,V2>
java.lang.Object
org.apache.beam.sdk.transforms.PTransform<PCollection<KV<K,V1>>,PCollection<KV<K,KV<V1,V2>>>>
org.apache.beam.sdk.extensions.joinlibrary.Join.LeftOuterJoin<K,V1,V2>
- Type Parameters:
K
- Type of the key for both collectionsV1
- Type of the values for the left collection.V2
- Type of the values for the right collection.
- All Implemented Interfaces:
Serializable
,HasDisplayData
- Enclosing class:
Join
public static class Join.LeftOuterJoin<K,V1,V2>
extends PTransform<PCollection<KV<K,V1>>,PCollection<KV<K,KV<V1,V2>>>>
PTransform representing a left outer join of two collections of KV elements.
- See Also:
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Field Summary
Fields inherited from class org.apache.beam.sdk.transforms.PTransform
annotations, displayData, name, resourceHints
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Method Summary
Modifier and TypeMethodDescriptionexpand
(PCollection<KV<K, V1>> leftCollection) Override this method to specify how thisPTransform
should be expanded on the givenInputT
.static <K,
V1, V2>
Join.LeftOuterJoin<K, V1, V2> with
(PCollection<KV<K, V2>> rightCollection, V2 nullValue) Methods inherited from class org.apache.beam.sdk.transforms.PTransform
addAnnotation, compose, compose, getAdditionalInputs, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setDisplayData, setResourceHints, toString, validate, validate
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Method Details
-
with
public static <K,V1, Join.LeftOuterJoin<K,V2> V1, withV2> (PCollection<KV<K, V2>> rightCollection, V2 nullValue) -
expand
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<PCollection<KV<K,
V1>>, PCollection<KV<K, KV<V1, V2>>>>
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