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Re: [xsl] Designing streamable XPath expressions

2014-01-05 11:23:14
 Hi Roger,

Seems OK.

You missed a closing "]" on Slide 5    :)

Oh, and BTW, do you think this is streamable:


text()[1]

Maybe the Spec. says "yes", but I don't believe so.


Cheers,
Dimitre

On Sun, Jan 5, 2014 at 2:24 AM, Costello, Roger L. 
<costello(_at_)mitre(_dot_)org> wrote:
Hi Folks,

Suppose you want to count the <head> elements within the <section> elements.

You might use this simple XPath expression:

        count(//section/head)

However, that has a subtle problem when used in a streaming program.

I created a few slides that describe the problem, as well as the solution:

http://xfront.com/Streamable-XPath-expression.pptx

/Roger

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-- 
Cheers,
Dimitre Novatchev
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