Re: Why does Barracuda choose the way to parse the whole page (*ML) to a doc?

 --- Jacob Kjome <[email protected]> wrote: > 
> I really suggest that you post these questions to
> the xmlc list at 
> xmlc.enhydra.org.  

Again I think my question is not about XMLC. It is
about Barracuda. If nobody can answer, then just
forget it.

> Barracuda, theoretically, deals
> with any DOM structure 
> that implements the w3c dom.  In practice, pretty
> much everyone uses XMLC 
> and it is used by Barracuda's examples by default. 
> So, Barracuda has 
> little to say about the implementation of the dom
> structures except that it 
> expects them to be w3c dom compliant.
> 

That is what I need to know. You answered it. Thank
you. 

I have conclusion now. I think get rid of w3c dom will
make the performance much better. However, Barracuda
cannot do this. So it will not perform well.

>
> I still don't fully understand the "squeezing" that
> you speak of, so you 
> are going to have to be a bit more clear on that. 

I am very clear about and use this idea a lot. Let me
make a bit clear here in the following toy example.

Assume index.html an XHTML which has 1,000,000 w3c dom
Nodes there. It contains one dynamic data, remember it
just a toy. Then in my data tree, actually it a
3-nodes data line in this case. There are only three
nodes. Do you see the difference for parser
performance?    

> Again, the xmlc list 
> would be a better place to ask.  There are people
> there that would be much 
> better qualified to answer your questions.  Please
> don't take this as a 
> lack of interest.  I just can't speak to it very
> much.  It is possible 
> that, come Monday, some of the other people on the
> Barracuda list will have 
> more to say about this, so be patient.  The list is
> usually pretty silent 
> over the weekend.
> 

Never mind!!!!

>
> Jake
> 
> At 01:04 PM 3/15/2003 -0500, you wrote:
> >Thanks for your reply. Please look my messages as
> >follows:
> >
> >  --- Jacob Kjome <[email protected]> wrote: >
> > > Are you thinking of the LazyDOM feature of XMLC?
> >
> >Not exactly. I am more interested in Barracuda's
> >framework. I like its architecture more than
> Struts. I
> >want to make sure the performance comparison
> between
> >these two. If Barracuda parses the whole doc tree,
> >then they will perferm similarly.
> >
> > > That will make it so that
> > > nodes don't get opened until they require
> > > processing.  Unfortunately,
> > > Barracuda really doesn't make use of the
> > > LazyDOM....at least not through
> > > BTemplate.
> > >
> >
> >What doc structure does Barracuda use?
> >
> > > Maybe you can explain a little more what you
> have in
> > > mind.
> >
> >I like to parse the dynamic components such as
> BTable
> >to some light weight data structure(not Node in
> >w3c.dom) and squeeze all other nodes(static part)
> to a
> >few idled data nodes(just some strings). Normally,
> >most of the nodes will be squeezed into a few
> strings.
> >So the doc tree will be much smaller.
> >
> >In LazyDOM, there is no such squeeze. I don't know
> if
> >other "DOM" does this.
> >
> >However, the new data tree cannot be a w3c.dom
> >Document.
> >
> >
> > >You might also
> > > want to post your question to the XMLC list
> since it
> > > may be more relevant
> > > there.
> > >
> >
> >I will discuss this to there after I understand
> more
> >about the parser used in Barracuda.
> >
> > > Jake
> > >
> > > At 12:14 PM 3/15/2003 -0500, you wrote:
> > > >I am trying to understand Barracuda/XMLC right
> now.
> > > I
> > > >am wondering why XMLC parse the whole *ML to a
> > > >Document. The doc tree is so big. Why don't
> just
> > > parse
> > > >to a smaller doc tree? So the perfomance will
> be
> > > >improved significantly.
> > > >
> > >
> >
>
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