org.apache.flink.table.catalog

Interface CatalogRegistry

All Known Implementing Classes:

CatalogManager

@PublicEvolving
public interface CatalogRegistry

A catalog registry for dealing with catalogs.

Method Summary

Modifier and Type	Method and Description
Optional<ResolvedCatalogBaseTable<?>>	getCatalogBaseTable(ObjectIdentifier objectIdentifier) Retrieves a fully qualified table.
Catalog	getCatalogOrError(String catalogName) Gets a catalog by name.
String	getCurrentCatalog() Gets the name of the current catalog.
String	getCurrentDatabase() Get the name of the current database.
Optional<CatalogPartition>	getPartition(ObjectIdentifier tableIdentifier, CatalogPartitionSpec partitionSpec) Retrieves a partition with a fully qualified table path and partition spec.
boolean	isTemporaryTable(ObjectIdentifier objectIdentifier) Return whether the table with a fully qualified table path is temporary or not.
ObjectIdentifier	qualifyIdentifier(UnresolvedIdentifier identifier) Returns the full name of the given table path, this name may be padded with current catalog/database name based on the identifier's length.

Method Detail

getCurrentDatabase

String getCurrentDatabase()

Get the name of the current database.

getCurrentCatalog

String getCurrentCatalog()

Gets the name of the current catalog.

qualifyIdentifier

ObjectIdentifier qualifyIdentifier(UnresolvedIdentifier identifier)

Returns the full name of the given table path, this name may be padded with current catalog/database name based on the identifier's length.

Parameters:

identifier - an unresolved identifier

Returns:

a fully qualified object identifier

getCatalogOrError

Catalog getCatalogOrError(String catalogName)
                   throws CatalogNotExistException

Gets a catalog by name.

Parameters:

catalogName - name of the catalog to retrieve

Returns:

the requested catalog

Throws:

CatalogNotExistException - if the catalog does not exist

getCatalogBaseTable

Optional<ResolvedCatalogBaseTable<?>> getCatalogBaseTable(ObjectIdentifier objectIdentifier)

Retrieves a fully qualified table. If the path is not yet fully qualified use qualifyIdentifier(UnresolvedIdentifier) first.

Parameters:

objectIdentifier - full path of the table to retrieve

Returns:

resolved table that the path points to or empty if it does not exist.

isTemporaryTable

boolean isTemporaryTable(ObjectIdentifier objectIdentifier)

Return whether the table with a fully qualified table path is temporary or not.

Parameters:

objectIdentifier - full path of the table

Returns:

the table is temporary or not.

getPartition

Optional<CatalogPartition> getPartition(ObjectIdentifier tableIdentifier,
                                        CatalogPartitionSpec partitionSpec)

Retrieves a partition with a fully qualified table path and partition spec.

Parameters:

tableIdentifier - full path of the table to retrieve

partitionSpec - full partition spec

Returns:

partition in the table.