// Check that the current user has permission to grant the privileges.
LanguageConnectionContext lcc = activation.getLanguageConnectionContext();
DataDictionary dd = lcc.getDataDictionary();
String currentUser = lcc.getAuthorizationId();
TransactionController tc = lcc.getTransactionExecute();
SchemaDescriptor sd = _tupleDescriptor.getSchemaDescriptor();
UUID objectID = _tupleDescriptor.getUUID();
String objectTypeName = _tupleDescriptor.getObjectTypeName();
// Check that the current user has permission to grant the privileges.
checkOwnership( currentUser, (TupleDescriptor) _tupleDescriptor, sd, dd );