Re: Custom TreeModel

[Aristotle Pagaltzis <pagaltzis gmx de>]

* Emmanuel Rodriguez <emmanuel rodriguez gmail com> [2010-01-14 08:35]:
> I see that there's not way to avoid the cache. It's a bit of
> a pity that I can't detect when an iter is no longer needed as
> eventually all nodes will be duplicated into the cache.
>
> I'm guessing that with a normal (pure Perl) tree model this
> will not be the case as nodes will be already in the model.
> Using XML::LibXML nodes is a bit peculiar as the memory
> management is a bit different. If I'm not mistaken XML::LibXML
> assumes that nodes are attached to the underlying C model and
> that the SVs wrapping them can be easily discarded at anytime
> as long as the original C structure lives.
>
> I could rewrite this tree model with a pure Perl tree model
> (HTML::Tree) and add it to the Gtk2-Perl examples.

It sounds to me like what you want is to store some kind of
pointer in the iter (eg. an XPath) whereby the same node can be
re-requested from XML::LibXML in the event that it has to.

I think.

Regards,
-- 
Aristotle Pagaltzis // <http://plasmasturm.org/>