Re: [xml] Does libxml2 create nodes on-the-fly?

[Andreas Pakulat <apaku gmx de>]

On 23.06.06 17:05:08, Daniel Veillard wrote:
> On Fri, Jun 23, 2006 at 10:07:20PM +0200, Andreas Pakulat wrote:
> > On 20.06.06 20:00:37, Andreas Pakulat wrote:
> > > On 20.06.06 18:25:05, Buchcik, Kasimier wrote:
> > > > > It seems that I always get new python objects everytime I ask for
> > > > > node.children, is that correct? This makes it rather hard to 
> > > > 
> > > > Yes, this is the intended behaviour; otherwise one would have to
> > > > implement reference counting or keep the python wrapper objects
> > > > for Libxml's nodes always alive.
> > > 
> > > > DOM Level 3 introduced the method "isSameNode" for such scenarios:
> > > > http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#Node3-
> > > > isSameNode
> > > 
> > > Well, nice to know there is a way in theory, but how about libxml2's
> > > actual set of functions? I couldn't find anything with the libxml2
> > > module. So does libxml2 (the python bindings) provide any means of
> > > checking wether 2 nodes are the same wrt. to the dom? 
> > 
> > Anybody with a hint, how to check wether 2 nodes are the same?
> 
>   unfortunately I'm afraid you need to go down to the C level and
> check the 2 pointers, they aren't seen at the python level. Should be
> a fairly easy change to python/libxml.c to add this equality entry point
> and then add a method in the node class in libxml.py to be used for
> comparison.

Ok, first I'll open a wishlist bug for this and then I'll try to do this
(though I'm not familiar with libxml2's C Interface, nor the
Python-C-Bridge-Stuff in general)...

Andreas

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