Re: [ANN] DataPower Streaming XML Processing Breakthro

Curiously i just received a "news alert" from eweek about it.

http://www.eweek.com/article2/0,1759,1780265,00.asp


On Thu, 31 Mar 2005 09:44:27 -0500, Jan Nelson <jan@xxxxxxxxxxxxx> wrote:
> Hi Emmanouil,
> 
> Emmanouil Batsis wrote:
> > Jan Nelson wrote:
> >
> >> DataPower Streaming XML Processing Breakthrough Delivers Streaming XPath
> >> and Streaming XSLT for XML Documents of Unlimited Size
> >
> > Could you please provide a direct link?
> 
> This particular press release hasn't made it to our news page yet
> (http://www.datapower.com/newsroom/) but I put the entire text of it in the
> original post.
> 
> > I was wondering if full XSLT or a subset of it is supported and how the
> > whole thing stands against Streaming Transformations for XML.
> 
> Streaming processing does only apply to a certain subset of XSLT and XPath;
> for example, an expression like "(//a)[count(//a) div 2]" can't be evaluated
> on a stream of input data without buffering the entire stream, thereby
> defeating the purpose.  DataPower's XA35 does streamability analysis on each
> stylesheet, and if it finds expressions that can't be executed on a stream,
> it logs diagnostics to that effect and falls back to normal tree-oriented
> processing.  This technology has no particular relation to STX.
> 
> Jan