org.apache.beam.sdk.extensions.sql

Interface BeamSqlSeekableTable

All Superinterfaces:

java.io.Serializable

public interface BeamSqlSeekableTable
extends java.io.Serializable

A seekable table converts a JOIN operator to an inline lookup. It's triggered by SELECT * FROM FACT_TABLE JOIN LOOKUP_TABLE ON ....

Method Summary

Modifier and Type	Method and Description
default void	finishBundle(org.apache.beam.sdk.transforms.DoFn.FinishBundleContext context, org.apache.beam.sdk.options.PipelineOptions pipelineOptions)
java.util.List<org.apache.beam.sdk.values.Row>	seekRow(org.apache.beam.sdk.values.Row lookupSubRow) return a list of Row with given key set.
default void	setUp(org.apache.beam.sdk.schemas.Schema joinSubsetType) prepare the instance.
default void	startBundle(org.apache.beam.sdk.transforms.DoFn.StartBundleContext context, org.apache.beam.sdk.options.PipelineOptions pipelineOptions)
default void	tearDown() cleanup resources of the instance.

Method Detail

setUp

default void setUp(org.apache.beam.sdk.schemas.Schema joinSubsetType)

prepare the instance.

Parameters:

joinSubsetType - joining subset schema

startBundle

default void startBundle(org.apache.beam.sdk.transforms.DoFn.StartBundleContext context,
                         org.apache.beam.sdk.options.PipelineOptions pipelineOptions)

finishBundle

default void finishBundle(org.apache.beam.sdk.transforms.DoFn.FinishBundleContext context,
                          org.apache.beam.sdk.options.PipelineOptions pipelineOptions)

seekRow

java.util.List<org.apache.beam.sdk.values.Row> seekRow(org.apache.beam.sdk.values.Row lookupSubRow)

return a list of Row with given key set.

tearDown

default void tearDown()

cleanup resources of the instance.