org.apache.beam.sdk.extensions.sql.meta.provider.pubsublite

Class PubsubLiteTableProvider

java.lang.Object

org.apache.beam.sdk.extensions.sql.meta.provider.InMemoryMetaTableProvider

org.apache.beam.sdk.extensions.sql.meta.provider.pubsublite.PubsubLiteTableProvider

All Implemented Interfaces:

TableProvider

@AutoService(value=TableProvider.class)
public class PubsubLiteTableProvider
extends InMemoryMetaTableProvider

Pub/Sub Lite table provider.

Pub/Sub Lite tables may be constructed with:

 CREATE EXTERNAL TABLE tableName(
     message_key BYTES [NOT NULL],  // optional, always present on read
     publish_timestamp TIMESTAMP [NOT NULL],  // optional, readable tables only, always present on read
     event_timestamp TIMESTAMP [NOT NULL],  // optional, null if not present in readable table, unset in message if null in writable table. NOT NULL enforces field presence on read
     attributes ARRAY<ROW<key VARCHAR, values ARRAY<BYTES>>>,  // optional, null values never present on reads or handled on writes
     payload BYTES | ROW<[INSERT SCHEMA HERE]>,
 )
 TYPE pubsublite
 // For writable tables
 LOCATION 'projects/[PROJECT]/locations/[CLOUD ZONE]/topics/[TOPIC]'
 // For readable tables
 LOCATION 'projects/[PROJECT]/locations/[CLOUD ZONE]/subscriptions/[SUBSCRIPTION]'
 TBLPROPERTIES '{
     "deadLetterQueue": "[DLQ_KIND]:[DLQ_ID]",  // optional
     "format": "[FORMAT]",  // optional
     // format params
 }'
 

Constructor Summary

Constructors

Constructor and Description
PubsubLiteTableProvider()

Method Summary

Modifier and Type	Method and Description
BeamSqlTable	buildBeamSqlTable(Table table) Build a BeamSqlTable using the given table meta info.
java.lang.String	getTableType() Gets the table type this provider handles.

Methods inherited from class org.apache.beam.sdk.extensions.sql.meta.provider.InMemoryMetaTableProvider

createTable, dropTable, getTables

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.beam.sdk.extensions.sql.meta.provider.TableProvider

getSubProvider, getSubProviders, getTable

Constructor Detail

PubsubLiteTableProvider

public PubsubLiteTableProvider()

Method Detail

getTableType

public java.lang.String getTableType()

Description copied from interface: TableProvider

Gets the table type this provider handles.

buildBeamSqlTable

public BeamSqlTable buildBeamSqlTable(Table table)

Description copied from interface: TableProvider

Build a BeamSqlTable using the given table meta info.