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Re: [xml-dev] SAX and parallel processing

From: Alan Gutierrez <alan-xml-dev@-----.--->
To: Uche Ogbuji <Uche.Ogbuji@-----------.--->
Date: 1/1/2005 8:43:00 PM
* Uche Ogbuji <Uche.Ogbuji@f...> [2005-01-01 15:29]:

> 
> On Fri, 2004-12-31 at 18:44 -0500, Alan Gutierrez wrote:
> >     The characters event is interesting, becuase it is an index into
> >     the parse buffer (in theory, and on Xerces indeed), but a
> >     characters evet is only ever at the top of the stack. I only
> >     ever need one.
> 
> Interestingly enough, this is precisely one of the aspects of
> Python/SAX that is incompatible to Java (as I intimated earlier).
> in Python/SAX, we decided to go with the (in our opinions) much
> less tangled approach of making the parameter from characters
> events an actual text object, rather than a set of offsets.
> 
> I know the original SAX idea was optimization, but I do think this is
> exactly one of those areas where perhaps (IMO) premature optimization
> ends up limiting design evolution, and I also think that it interferes
> with the "Simple" part.
> 
> Not a problem in Python/SAX.

    I've placed the characters event in a Characters object, which
    will convert to string as part of toString, and cache the result.

    Both worlds.

    In my model the data is called a Lexeme, and it is separate from
    and Event.

--
Alan Gutierrez - alan@e...


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