Re: [xml] Strange xml:base/CWD problem

[Frans Englich <frans englich telia com>]

On Sunday 19 December 2004 20:37, Daniel Veillard wrote:
> On Mon, Dec 13, 2004 at 06:20:46PM +0000, Frans Englich wrote:
> > Hello,
> >
> > I have a validation problem which is dependent on what the current
> > working directory is. My documents/schemata are quite large, so perhaps
> > someone has a clue what the problem could be before I start digging
> > through, for finding the bug, or my mistake.
> > This is the output:
> >
> > bash-2.05b$  xmllint --nonet --noout --schema 
> > ../schemata/TestCollection.xsd --xinclude testCollection.xml
> > Unimplemented block at xmlschemas.c:5640
> > xmlValidness.xml:25: element testDescriptor: Schemas validity error :
> > Element 'testDescriptor': The attribute 'xml:base' is not allowed.
> > testCollection.xml fails to validate
>
> [...]
>
> > Any ideas?
>
>   http://www.w3.org/TR/xinclude/#base
>
> Part of XInclude xml:base fixup. libxml2 will add the base attribute only
> if necessary, i.e. if URI references mades from the document resulting from
> the XInclude processing may get wrong. if everything is in the same
> directory then those are not needed.

Ok, it is inevitable. From what I can tell, this means that in practice must 
_any_ XML format where its users may want to use XInclusions must add support 
for attributes from the xmlns ns(the lang attribute is need to, AFAICT). Is 
it just me who find that a major setback for XInclusions' usefulness? 
Afterall, the schema must be changed for the sole reason of supporting 
XInclude.

I'm pondering, is it at all possible to make the implementation not break the 
validation? Not AFAICT, since the spec says to add the attributes to the 
result infoset, and that the validation must be done on the result info set, 
not the source info sets..


Cheers,

                Frans