Package org.apache.beam.sdk.extensions.sql.impl.transform

Class BeamJoinTransforms.JoinAsLookup

java.lang.Object

org.apache.beam.sdk.transforms.PTransform<PCollection<Row>,PCollection<Row>>

org.apache.beam.sdk.extensions.sql.impl.transform.BeamJoinTransforms.JoinAsLookup

All Implemented Interfaces:

Serializable, HasDisplayData

Enclosing class:

BeamJoinTransforms

public static class BeamJoinTransforms.JoinAsLookup
extends PTransform<PCollection<Row>,PCollection<Row>>

Transform to execute Join as Lookup.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.apache.beam.sdk.transforms.PTransform

annotations, displayData, name, resourceHints

Constructor Summary

Constructors

Constructor	Description
JoinAsLookup(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexNode joinCondition, BeamSqlSeekableTable seekableTable, Schema lkpSchema, Schema outputSchema, int factColOffset, int lkpColOffset)

Method Summary

Modifier and Type	Method	Description
PCollection<Row>	expand(PCollection<Row> input)	Override this method to specify how this PTransform should be expanded on the given InputT.

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

Methods inherited from class java.lang.Object

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

Constructor Details

JoinAsLookup

public JoinAsLookup(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexNode joinCondition,
 BeamSqlSeekableTable seekableTable,
 Schema lkpSchema,
 Schema outputSchema,
 int factColOffset,
 int lkpColOffset)

Method Details

expand

public PCollection<Row> expand(PCollection<Row> input)

Description copied from class: PTransform

Override this method to specify how this PTransform should be expanded on the given InputT.

NOTE: This method should not be called directly. Instead apply the PTransform should be applied to the InputT using the apply 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 class PTransform<PCollection<Row>,PCollection<Row>>