Package org.apache.druid.sql.calcite.schema

Interface Summary

Interface	Description
DruidSchemaManager	This interface provides a map of datasource names to DruidTable objects, used by the DruidSchema class as the SQL planner's view of Druid datasource schemas.
NamedSchema	This interface provides everything that is needed to register a Schema as a sub schema to the root schema of Druid SQL.

Class Summary

Class	Description
AbstractTableSchema	Calcite provides two "schema" abstractions.
AvailableSegmentMetadata	Immutable representation of RowSignature and other segment attributes needed by SystemSchema.SegmentsTable This class contains the metadata of segments announced by historicals or ingestion tasks.
AvailableSegmentMetadata.Builder
DruidCalciteSchemaModule	The module responsible for providing bindings to Calcite schemas.
DruidSchema
DruidSchemaCatalog	The Druid 'catalog', containing information about all Druid schemas which are available.
InformationSchema
LookupSchema	Creates the "lookup" schema in Druid SQL, composed of all available LookupDataSource.
MetadataSegmentView	This class polls the Coordinator in background to keep the latest published segments.
NamedDruidSchema	The schema for Druid tables to be accessible via SQL.
NamedLookupSchema	The schema for Druid lookup tables to be accessible via SQL.
NamedSystemSchema	The schema for Druid system tables to be accessible via SQL.
NamedViewSchema
NoopDruidSchemaManager
RootSchemaProvider	Provides the RootSchema for calcite with - metadata schema disabled because it's not needed - caching disabled because druid's caching is better.
SegmentMetadataCache	Broker-side cache of segment metadata which combines segments to identify datasources which become "tables" in Calcite.
SystemSchema
ViewSchema

Annotation Types Summary

Annotation Type	Description
DruidSchemaName	An annotation to get the name of the schema to access Druid tables in SQL.