Function: __xml_nsexpand_iristr - Virtuoso Functions Guide

__xml_nsexpand_iristr

Checks if the string is QName and if it is so then replaces namespace prefix to the full namespace IRI.

__xml_nsexpand_iristr (in str varchar);

Description

Checks if the string is QName and if it is so then replaces namespace prefix to the full namespace IRI. Otherwise signals error if the argument is local IRI without a prefix.

Parameters

str – QName. For ex. if QName is "prefix:local", then conveniently is replaced "prefix:" with the namespace IRI

Examples

Example with FOAF namespace prefix

SQL> SELECT __xml_nsexpand_iristr ('foaf:knows');
__xml_nsexpand_iristr
VARCHAR
_______________________________________________________________________________

http://xmlns.com/foaf/0.1/knows

1 Rows. -- 0 msec.

Example with no namespace prefix

SQL> SELECT __xml_nsexpand_iristr ('no-namespace-prefix-iri');

*** Error 22023: [Virtuoso Driver][Virtuoso Server]SR649: 
No XML namespace prefix in string "no-namespace-prefix-iri"
in
__xml_nsexpand_iristr:(BIF),
        __01 => 'no-namespace-prefix-iri',
<Top Level>
at line 5 of Top-Level:
SELECT __xml_nsexpand_iristr ('no-namespace-prefix-iri')

Example with namespace prefix "local"

SQL> SELECT __xml_nsexpand_iristr ('no-such-prefix:local');

*** Error 22023: [Virtuoso Driver][Virtuoso Server]SR648: 
Unknown XML namespace prefix in IRI "no-such-prefix:local"
in
__xml_nsexpand_iristr:(BIF),
        __01 => 'no-such-prefix:local',
<Top Level>
at line 6 of Top-Level:
SELECT __xml_nsexpand_iristr ('no-such-prefix:local')

Example with namespace prefix ""no-such-prefix""

SQL> SELECT __xml_ns_iristr ('no-such-prefix', 'knows');

*** Error 22023: [Virtuoso Driver][Virtuoso Server]SR648: Unknown XML namespace prefix "no-such-prefix"
in
__xml_ns_iristr:(BIF),
        __01 => 'no-such-prefix',
        __02 => 'knows',
<Top Level>
at line 7 of Top-Level:
SELECT __xml_ns_iristr ('no-such-prefix', 'knows')

22. Virtuoso Functions Guide - __xml_nsexpand_iristr

__xml_nsexpand_iristr