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From "Robert Koberg" <...@koberg.com>
Subject RE: release plan for 2.1?
Date Wed, 27 Nov 2002 21:53:55 GMT
Hi,

> -----Original Message-----
> From: Bruno Dumon [mailto:bruno@outerthought.org]
> Sent: Wednesday, November 27, 2002 1:25 PM

> On Wed, 2002-11-27 at 22:10, Robert Koberg wrote:
> > Hi,
> >
> > > -----Original Message-----
> > > From: Bruno Dumon [mailto:bruno@outerthought.org]
> > > Sent: Wednesday, November 27, 2002 1:04 PM
> >
> > > > It just means if you use Saxon, Saxon will use Aelfred (which is
> > > bundled in the
> > > > Saxon jar) by default.
> > > >
> > > > If you want Saxon to use Xerces because you want a more feature
> > > rich parser, you
> > > > need to set the system property to point to Xerces.
> > > >
> > > > But, it is not optimal. Saxon would work much faster using its
> own DOM impl.
> > >
> > > Saxon can only work with its own dom implementation. Even if you set
> > > xerces as parser, saxon will still build its own optimized "dom" tree
> > > (but will use xerces as sax parser).
> >
> > Ok, sorry, but it is still a much slower thing because of this.
> >
>
> Nothing to sorry about :-) But why would it still be much slower? The
> parser is only used for parsing the stylesheet, after which the
> stylesheet would normally be cached in a compiled state. The little
> difference in the one-time parsing speed of the stylesheet shouldn't
> make any important difference.
>

I have been searching for threads from Michael Kay on this subject, but saxon's
sourceforge archives are not searchable. Basically, I was just parrotting what
he says about the subject (I think - it has been a while). What he does, and
recommends is what I do now. Instead of incurring the overhead of the DOM (even
though the nodesets I created were pretty small) I just set up a string in the
session and use an URIResolver to return a StreamSource(StringReader(str)) to a
xsl document() call - simple, and no DOM.

best,
-Rob
URIResolver evangelist :)



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