Re: [ubl-dev] Ken's example (UBL 2.0 and Schema Extensibility)

["G. Ken Holman" <gkholman@CraneSoftwrights.com>]

At 2006-05-18 23:19 +0800, Chin Chee-Kai wrote:
>A bit of detour... I didn't quite understand how parsing
>the fragment at
>
>                    <hello xmlns="">...</hello>
>
>would get by without producing an error of invalid namespace value.

It isn't an invalid namespace, it is the null-URI ... it is 
explicitly declaring there is now no default namespace.

So, "hello" is an element in no namespace.  Had I not had that, it 
would have been in the Order namespace since that was the default 
namespace in scope.

>Unless the entire content within <LineItemExtension> was wrapped
>within CDATA section,

(which would make it text, not markup)

>wouldn't <hello> need to conform to XML
>spec and so end up as a parsed entity within processor memory
>(instead of, say, pure textual segment)?

It does.

>Anyone able to lend me some insight?

Namespaces in XML 1.1

http://www.w3.org/TR/2004/REC-xml-names11-20040204

Section 6.2: "The attribute value in a default namespace declaration 
MAY be empty. This has the same effect, within the scope of the 
declaration, of there being no default namespace. "


I hope this helps, Chee-Kai.

. . . . . . . . Ken

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