[Uw-ruby] Uw-ruby Digest, Vol 2, Issue 15

Sun Nov 18 18:33:45 PST 2007

FWIW my view is that for this introductory class I
should be learning how to use the standard XML library
that ships with ruby. Saying that, I'll be looking to
use the SAX approach over DOM if I can, but I want to
make sure I first understand how to utilize REXML.

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> Today's Topics:
> 
>    1. DOM or Stream parsing? (Garrick West)
>    2. Re: DOM or Stream parsing? (Richard Leickly)
>    3. Re: DOM or Stream parsing? (Mark Holton)
> 
> 
>
----------------------------------------------------------------------
> 
> Message: 1
> Date: Sat, 17 Nov 2007 23:44:43 -0800
> From: "Garrick West" <garrick at acm.org>
> Subject: [Uw-ruby] DOM or Stream parsing?
> To: Uw-ruby at zenspider.com
> Message-ID:
> 
>
<9e0ec7f70711172344k5ece4150x48027f44ca531dc6 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Hi Ryan,
> I figured I'd send this to the list as others might
> be interested in your
> response:
> 
> Wow.  That iTunes library is a bit of a monster to
> pull in with DOM, but it
> seems to work (at least on my system;).  The DTD is
> almost as simple as you
> can get, so it's not it would be too hard to do
> Stream parsing, but I
> question the value of doing so If you're not
> concerned about the load time.
>  It takes 54 seconds on my 2nd gen MacBook Pro
> usingREXML, and I've seen
> some form posts googling around suggesting libxml is
> faster,
> but can be a pain to set up (possibly dated?).
> 
> Thoughts?
> --Garrick West
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> ------------------------------
> 
> Message: 2
> Date: Sun, 18 Nov 2007 00:39:36 -0800
> From: "Richard Leickly"
> <Richard at iphc.washington.edu>
> Subject: Re: [Uw-ruby] DOM or Stream parsing?
> To: "UW's Ruby Certificate Program"
> <uw-ruby at zenspider.com>
> Message-ID:
> 
>
<40F0CA56251F1445A08B6019E34798B175BB61 at everglade.iphc.washington.edu>
> Content-Type: text/plain; charset="us-ascii"
> 
> I don't know all those acronyms; but it sounds like
> you are rolling in
> some heavy artillary, Garrick !!
> I used file.open() on the xml file.  Quick. The
> greps and the operations
> on the resulting arrays were also quick. I have a v.
> old Dell Platitude
> laptop. 
>  
> RD: maybe we could look at some of the more
> interesting solutions in
> class.  Sounds like GW has more tricks than Felix
> The Cat.
>  
> Richard Leickly
>  
> P.S. Yes...I am working on the weekend. Yes..I do
> have a life.
> ________________________________
> 
> From: uw-ruby-bounces at zenspider.com
> [mailto:uw-ruby-bounces at zenspider.com] On Behalf Of
> Garrick West
> Sent: Saturday, November 17, 2007 11:45 PM
> To: Uw-ruby at zenspider.com
> Subject: [Uw-ruby] DOM or Stream parsing?
> 
> 
> Hi Ryan,
> I figured I'd send this to the list as others might
> be interested in
> your response:
> 
> Wow.  That iTunes library is a bit of a monster to
> pull in with DOM, but
> it seems to work (at least on my system;).  The DTD
> is almost as simple
> as you can get, so it's not it would be too hard to
> do Stream parsing,
> but I question the value of doing so If you're not
> concerned about the
> load time.  It takes 54 seconds on my 2nd gen
> MacBook Pro using 
> REXML, and I've seen some form posts googling around
> suggesting libxml
> is faster,
> but can be a pain to set up (possibly dated?).
> 
> 
> Thoughts?
> --Garrick West
> -------------- next part --------------
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> ------------------------------
> 
> Message: 3
> Date: Sun, 18 Nov 2007 01:45:20 -0800
> From: "Mark Holton" <holtonma at gmail.com>
> Subject: Re: [Uw-ruby] DOM or Stream parsing?
> To: "UW's Ruby Certificate Program"
> <uw-ruby at zenspider.com>
> Message-ID:
> 
>
<8bd9e8730711180145g4802903eie1f30e8aefa55d37 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Came across this tonight: XmlSimple library ...in
> the 'xml-simple' gem...
> parses an XML document into a Ruby hash.
> 
> Guessing, and from what I read, there are no
> performance saving when sucking
> in the XML, but the resulting object is easier to
> use -- ends up as nested
> structure of Ruby hashes and arrays.
> 
> http://xml-simple.rubyforge.org/
> 
> :Holton
> 
> 
> On Nov 17, 2007 11:44 PM, Garrick West
> <garrick at acm.org> wrote:
> 
> > Hi Ryan,
> > I figured I'd send this to the list as others
> might be interested in your
> > response:
> >
> > Wow.  That iTunes library is a bit of a monster to
> pull in with DOM, but
> > it seems to work (at least on my system;).  The
> DTD is almost as simple as
> > you can get, so it's not it would be too hard to
> do Stream parsing, but I
> > question the value of doing so If you're not
> concerned about the load time.
> >  It takes 54 seconds on my 2nd gen MacBook Pro
> using REXML, and I've seen
> > some form posts googling around suggesting libxml
> is faster,
> > but can be a pain to set up (possibly dated?).
> >
> > Thoughts?
> > --Garrick West
> >
> > _______________________________________________
> > Uw-ruby mailing list
> > Uw-ruby at zenspider.com
> > http://www.zenspider.com/mailman/listinfo/uw-ruby
> >
> >
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