XML-NAMESPACE-PREFIX and XML-NNAMESPACE-PREFIX

If the XMLPARSE(XMLSS) option is in effect, the XML parser sets the XML-NAMESPACE-PREFIX special register or the XML-NNAMESPACE-PREFIX special register for a NAMESPACE-DECLARATION XML event that also defines a namespace prefix, or if an element name or attribute name in a namespace is prefixed.

The parser sets XML-NNAMESPACE-PREFIX if the XML document is in a national data item, or the RETURNING NATIONAL phrase is specified in the XML PARSE statement. Otherwise, the parser sets XML-NAMESPACE-PREFIX.

The special registers XML-NAMESPACE-PREFIX and XML-NNAMESPACE-PREFIX are mutually exclusive: If the parser sets XML-NAMESPACE-PREFIX, XML-NNAMESPACE-PREFIX is empty with length zero. If the parser sets XML-NNAMESPACE-PREFIX, XML-NAMESPACE-PREFIX is empty with length zero.

To determine the number of character encoding units in XML-NNAMESPACE-PREFIX, use the LENGTH intrinsic function; for example: FUNCTION LENGTH(XML-NNAMESPACE-PREFIX). To determine the number of bytes in XML-NNAMESPACE-PREFIX, use special register LENGTH OF XML-NNAMESPACE-PREFIX. The number of character encoding units differs from the number of bytes.

To determine the number of bytes in XML-NAMESPACE-PREFIX, use either special register LENGTH OF XML-NAMESPACE-PREFIX or the LENGTH intrinsic function; each returns the number of bytes.

The XML namespace-prefix special registers are undefined outside the processing procedure.