Re: XMLSAX (was [RPG XML] misuse of DOMXPath_getElemCount() ?)

Document Object Model (DOM)
Simple Application Programming Interface for XML (SAX)


Most XML parsers offer one or both interface/models.

As the name implies, SAX is simple parser.  You typically setup the callback
functions (procedure pointers) and it walks the document calling your
routines (tags, data).  It's usually faster and more efficient the DOM model
and can work well on very large documents.  But because the document is
processed sequentially, this can be less convenient than the DOM model.
Tracking states (nesting levels) is your problem.

DOM APIs present a tree model interface which allow you can walk/process the
document in the order you choose.  From an application perspective this can
be easier to use, but it comes at the cost of being slower and having larger
memory requirements.


Keith



----- Original Message ----- 
From: "Dan Bale" <dbale@xxxxxxxxxxxxx>
To: "RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
Sent: Monday, October 11, 2004 7:34 AM
Subject: XMLSAX (was [RPG XML] misuse of DOMXPath_getElemCount() ?)


> Aaron,
>
> Could you give a brief explanation of the XMLSAX parser?  Your web site
> offers the download (which I am retrieving -- 22MB???) but little else
that
> I could see of that describes what it does.  I am also downloading the
> rpg-xml-parser from your Code page; is this something different from
XMLSAX?
>
> We are looking at a project in which we will need to "deal" with
> XML-formatted data, both in receiving it on the AS/400 from a PC server
and
> sending it the other way as well.
>
> When your XML parsing is working in an RPG program, where is the XML data?
> A stream file in the IFS?  A native AS/400 flat file?
>
> FYI, we are not using Java for our project.
>
> tia,
> db
>
> > -----Original Message-----
> > From: rpg400-l-bounces@xxxxxxxxxxxx / Bartell, Aaron L. (TC)
> > Sent: Monday, October 11, 2004 10:14 AM
> >
> > Use the SAX parser instead that is also on my site.  It is quite faster
> > and less bulky.  I don't support the DOM parser wrappers I wrote anymore
> > because the SAX parser is the one to use.
> >
> > BTW, if you know Java that is the way you should be processing your XML.
> > WDSc has some amazing wizards to get you up and running with XML in
> > minutes, literally.
> >
> > Aaron Bartell
>
> --
> This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list
> To post a message email: RPG400-L@xxxxxxxxxxxx
> To subscribe, unsubscribe, or change list options,
> visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
> or email: RPG400-L-request@xxxxxxxxxxxx
> Before posting, please take a moment to review the archives
> at http://archive.midrange.com/rpg400-l.
>