Re: Memoization

  Hum, there is no such mechanism, the only way would be to add an
interface to libxslt to plug-in a document cache. Note that for a single
transformation all the document() result are cached (this is actually
required by the XSLT spec), but there is no mechanism for a more global
cache. Could make sense, could be very small change if one doesn't
try to implement a default cache in libxslt itself.

Daniel

On Thu, Aug 22, 2002 at 12:04:26PM +0100, Gary Benson wrote:
> This is one of those "resending an issue after one week if there was no
> answer might be a good idea" things -- hope you don't mind ;)
> 
>  -- Gary
> 
> On Thu, Aug 08, 2002 at 02:34:07AM +0100, Gary Benson wrote:
> 
> > Hiya,
> > 
> > I have an application which uses the Python bindings, and I've been
> > looking at ways to speed it up. The profiler shows that about three
> > quarters of the time is spent parsing XML files and there are _a lot_ of
> > repeat parsings going on.
> > 
> > Now, it occurred to me that I could speed it up tremendously if I could
> > somehow cache the parsed xmlDocs, but it isn't possible at the Python
> > level since a lot of the repeat parsings are files loaded in the XSLT
> > stylesheets via document().  To be truly effective I'd have to cache
> > them within libxml itself.  Ideally, you'd call xmlParsedDocsCache(1) to
> > enable the cache, such that the normal behaviour is unchanged.
> > 
> > I'd appreciate some insight from those who know libxml best (so probably
> > Daniel :)).  Is what I'm talking about possible, and if it is where
> > would be a nice place to implement it.  Obviously I'd like to be able to
> > call xmlParsedDocsCache() from Python code, but how do I make that
> > happen with the automated generator stuff? Libxml is a big bugger and
> > it's hard to know where to start :)
> > 
> > Thanks in advance,
> > Gary
> > 
> > [ [email protected] ][ GnuPG 85A8F78B ][ http://inauspicious.org/ ]
> 
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-- 
Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
[email protected]  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
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