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/**
 * A catalog registry for dealing with catalogs
 */
@PublicEvolving
public interface CatalogRegistry {
    String getCurrentDatabase();

    String getCurrentCatalog();

    ObjectIdentifier qualifyIdentifier(UnresolvedIdentifier identifier);

    Optional<Catalog> getCatalog(String catalogName);  

    Optional<CatalogBaseTable> Optional<ResolvedCatalogBaseTable<?>> getCatalogBaseTable(getResolvedCatalogBaseTable(
            ObjectIdentifier objectIdentifier);
    
     boolean	boolean isTemporaryTable(ObjectIdentifier objectIdentifier); 

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