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Contents
Preface

Virtuoso Functions Guide

Administration
Aggregate Functions
Array Manipulation
BPEL APIs
Backup
Compression
Cursor
Date & Time Manipulation
Debug
Dictionary Manipulation
Encoding & Decoding
File Manipulation
Free Text
Hashing / Cryptographic
LDAP
Locale
Mail
Miscellaneous
Number
RDF data
Remote SQL Data Source
Replication
SOAP
SQL
__any_grants
close
collation_define
complete_table_name
delay
end_result
exec
exec_metadata
exec_next
exec_result
exec_result_names
exec_score
identity_value
name_part
registry_get
registry_get_all
registry_name_is_pro...
registry_remove
registry_set
result
result_names
row_count
sequence_get_all
sequence_next
sequence_remove
sequence_set
set_identity_column
set_row_count
set_user_id
signal
sinv_create_inverse
sinv_create_key_mapp...
sinv_drop_inverse
sys_stat_analyze
sys_stat_histogram
table_drop_policy
table_set_policy
username
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web Server & Internet
XML
XPATH & XQUERY

Functions Index

registry_name_is_protected

The function checks if a given registry variable is read-only or protected from occasional changes.
registry_name_is_protected (in name varchar);
Description

Some registry variables are used solely by internal server routines so they should not be changed by any application. Some of these "protected" variables can be updated by DBA only (in built-in Virtuoso/PL routines) whereas some can not be updated by any Virtuoso/PL routine at all.

The function gets a variable name as a parameter and returns zero if such a variable variable can be created/modified/removed by any application, one if a variable can be modified by DBA but can not be removed and two if the variable can not be altered even by DBA.

The returned value does not indicate that the variable exists or not exists. The name of not yet existing variable can be protected anyway to prevent future misuse of an variable by an application.

The name of any protected variable starts with two underscores. It can be a good idea to not start names of application-specific registry variable with two underscores to ensure compatibility with future versions of Virtuoso Server.

Parameters
name – The name of registry variable to check.
Return Types

The function returns an integer

Examples
Two checks of variable names

One name can be used by any application, other is for internal use in the FTP server:

> select registry_name_is_protected ('my_example');
0

> select registry_name_is_protected ('__next_free_port');
1

See Also

registry_get

registry_get_all

registry_set

registry_remove

sequence_get_all

sequence_next

sequence_set

sequence_remove