From: pdg <pgattphoto@...>
Date: 2006-11-08T05:45:11+09:00
Subject: Re: REXML

Hi David (or others)

I am still not sure I get it, could you explain a little more?

Thanks,
Paul.

David Vallner wrote:
> pdg wrote:
> > Assuming I go with the Ruby pull parser, how do I use this in my code.
> > I see from the link the code sample, but I have no idea how to throw
> > that into my code and make it work. Any suggestions.
> >
>
> Generally, you should have some layer between XML input, and processing
> the records themselves. E.g. a trivial Song class, or at least a hash.
> Personally, I'd make a XMLSongList class that's enumerable (implements
> #each), and rework the REXML code that works for small files into one
> that yields a Song object for each of the records in succession by
> querying the tree accordingly.
>
> That shouldn't then be too hard to rework so that while #each is
> running, it opens a pull parser, and for each yield, builds up a Song
> object going through the record in the order how the elements appear in
> the XML file, instead of a random one. Once you isolate the code that
> manipulates the XML to the smallest significant unit (a song record in
> this case, I presume), it shouldn't be conceptually that difficult to
> rework from a tree parser to a pull parser. The code probably will get a
> little messier and verbose, but the main shift of thinking is in not
> asking the XML for what your object needs, but feeding an object what
> the XML has.
>
> > PS: idiot (slaps head). Yes it was 5-6meg not gig!
> >
>
> 6MB is still Huge (tm) for a XML file.
>
>
> --------------enigF9D6B5236ACE2603700BC85A
> Content-Type: application/pgp-signature
> Content-Disposition: inline;
> 	filename="signature.asc"
> Content-Description: OpenPGP digital signature
> X-Google-AttachSize: 188