Re: [xml] SelectSingleNode

[Nikolay Sivov <bunglehead gmail com>]

On 5/3/2011 06:46, Daniel Veillard wrote:
> On Mon, May 02, 2011 at 03:47:04PM -0400, Paul B. Cameron wrote:
> > In this particular case, however, I know how to format and register the
> > namespace information before evaluating the query. The challenge is
> > obtaining the set of namespaces declared by the instance document in the
> > first place.
>    Unfortunately the Microsoft API doesn't make much sense I'm afraid
> (or I misunderstand it), because a namespace URI may be bound to
> multiple prefixes on a document, and a given prefix may be bound to
> different namespace on a given document. So asking at the document
> level doesn't make sense to me.
>    What you can do is ask for the list of namespaces in scope for
> a given element, libxml2 has an aPI for this:
>    http://xmlsoft.org/html/libxml-tree.html#xmlGetNsList
It's not exactly that it seems. Their SDK has an example code for that, 
so it does:

- get namespace URI for document element;
- use that namespace URI to get a particular schema interface from 
collection returned from get_namespaces().

So this is only about schemas I think.

The reason it's a stub in Wine is most likely that nobody needed it.
>    Note that the namespace prefix used in an XPath query is not significant,
> the XPath matching will be done only on th namespace name, never the prefix.
>
> Daniel