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current-dateTime()

Subject: current-dateTime()
From: "Andrew Welch" <andrew.j.welch@xxxxxxxxx>
Date: Fri, 18 Apr 2008 12:54:06 +0100
 current-dateTime()
What is the reasoning behind defining as current-dateTime() and
current-time() as being "current at some time during the evaluation of
a query or transformation"?

Saxon seems to follow the above and return the same value for each
call to the function, even during transformations that can last
several minutes (or hours or days).

It would be really useful if it returned the actual dateTime at the
time of the call so you could implement a progress reporting feature
in the transform - you could say how many records were processed in a
given time and based on that suggest when the transform might finish.

The spec does say it's implementation dependent, so I wonder why it's
fixed when people can do that themselves with a variable... if it
returns the time when it's called then it opens up quite a few
possibilities (especially where standalone transforms orchestrate the
entire processing)

thanks
-- 
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/

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