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

[Daniel Veillard <veillard redhat com>]

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.

Daniel

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