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

package org.apache.druid.sql.calcite.schema

Class	Description
AbstractTableSchema	Calcite provides two "schema" abstractions.
BrokerSegmentMetadataCache	Broker-side cache of segment metadata that combines segments to build datasources which become "tables" in Calcite.
BrokerSegmentMetadataCacheConfig	Broker-side configuration class for managing segment polling from the Coordinator and customizing properties related to the SegmentMetadata cache which is used to infer datasources for SQL.
DruidCalciteSchemaModule	The module responsible for providing bindings to Calcite schemas.
DruidSchema
DruidSchemaCatalog	The Druid 'catalog', containing information about all Druid schemas which are available.
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.
DruidSchemaName	An annotation to get the name of the schema to access Druid tables in SQL.
InformationSchema
LookupSchema	Creates the "lookup" schema in Druid SQL, composed of all available LookupDataSource.
MetadataSegmentView	Builds a view of used segment metadata currently present on the Coordinator in the SegmentsMetadataManager object, by polling the REST API /druid/coordinator/v1/metadata/segments.
NamedDruidSchema	The schema for Druid tables to be accessible via SQL.
NamedLookupSchema	The schema for Druid lookup tables to be accessible via SQL.
NamedSchema	This interface provides everything that is needed to register a Schema as a sub schema to the root schema of Druid SQL.
NamedSystemSchema	The schema for Druid system tables to be accessible via SQL.
NamedViewSchema
NoopDruidSchemaManager
PhysicalDatasourceMetadataFactory	Builds DatasourceTable.PhysicalDatasourceMetadata for a dataSource, including information about its schema, joinability, and broadcast status.
RootSchemaProvider	Provides the RootSchema for Calcite with - metadata schema disabled because it's not needed - caching disabled because Druid's caching is better.
SystemSchema
SystemServerPropertiesTable	System schema table sys.server_properties that contains the properties of all Druid servers.
ViewSchema