Re: [xml] XPath queries on document fragments without a document

[Daniel Veillard <veillard redhat com>]

On Thu, Sep 05, 2002 at 01:21:39PM -0700, Sean Chittenden wrote:
> You bet!  I'm actually out to compete with AxKit here in a month or
> two and think I can beat their performance #'s.  :~) I'm a perl->ruby
> convert and want to offer something superior to Perl.  Other than an

  Hehe, I think Matt won't be annoyed by a bit of challenge :-)

> way of dynamically creating pages via XML/XSLT, the Ruby bindings for
> libxml/libxslt are also the basis for rubynet, Ruby's CPAN.

  Sounds cool ...

> I've wrapped most of the data structures and have just finished
> wrapping the parser contexts.  I'm about to go through and add parser
> contexts to everything so that you can make multiple calls to xpath
> w/o segv'ing the parser.  Speaking of, what's the best way to hook
> into libxml's memory management given Ruby has its own garbage
> collector that runs at uncontrollable times.  I was having some
> problems cleaning up the xml parser in a persistent environment.  I
> settled in on setting up a counter for how many XML documents were in
> existence, but that seems really broken.  Any tips/incite there?  -sc

  Well look at http://xmlsoft.org/xmlmem.html , basically you can
override completely the set of memory routines used by libxml2 and
libxslt using xmlMemSetup(), but I'm not sure it will be really
useful. IIRC Matt had to build reference counting layer for each
object of libxml2 manipulated from perl.

  Good luck, have fun !

Daniel

-- 
Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
veillard redhat com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
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