Re: [xml] Invalid namespace definitions after namespace change

[Kasimier Buchcik <kbuchcik 4commerce de>]

Hi,

Daniel Veillard wrote:
> On Mon, Feb 28, 2005 at 01:14:56PM +0100, Kasimier Buchcik wrote:
>
> > > For my needs that is still unacceptable. I implement an XMPP
> > > implementation and for backward-compatibility with many Jabber clients
> > > I need to use default namespaces (no prefixes) in some places.
> >
> > I see, OK so you need total control of the declarations.
>
>
> and as I pointed out in my answer to 
>   http://bugzilla.gnome.org/show_bug.cgi?id=168764
> you must be able to embbed XML instances in XMPP messages, those 
> instances may use namespaces in attribute content or text nodes, and
> the suggested API would just break XMPP completely.

I admit, a xmlCleanupNsDecl() would be dangerous from this point of
view; the user would have to know about the QNames im use. Seems I
produced an extra amount of work for you today ;-)

> > > I think a function to remove (or override) namespace declaration from
> > > a node is what I need and I will request it via Bugzilla.
> >
> > Exactly.
> >
> > [1] 
> > http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/namespaces-algorithms.html
>
>
>   DOM and libxml2 are completely different because in libxml2 the namespace
> informations are shared, if you modify the namespace node you instead of just
> changing the anmespace pointer then you:
>
>     1/ don't have to chase all the other nodes to make the same change
>     2/ don't need to creat new namespaces node and try to track and remove
>        the old namespace informations

Yeah, changing the declaration from xmlns="http://b/"; to
xmlns="http://a/"; on <b> seems to be the most simple solution - if the
change for the subtree - not only for one specific node - is what Jacek
needs.

Greetings,

Kasimier