Re: [xsl] exslt random:random-sequence() and Math:random()

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Subject: Re: exslt random:random-sequence() and Math:random()
From: Martin Honnen <Martin.Honnen@xxxxxx>
Date: Thu, 18 Mar 2010 13:17:56 +0100

Mike Odling-Smee wrote:

Calling "impure" functions in XSLT is always problematic; the more
aggressive your optimizer, the more problematic it becomes.


Michael - I have noticed that calling the function current-dateTime()
multiple-times within one XSLT invocation seems to always give the
same result even if a significant amount of time has elapsed - is this
for the same reason? If so there anyway to fool the optimiser? (In
this example I was usingSaxon 9.1.0.8).

I don't think it is any optimization causing that, the function http://www.w3.org/TR/xpath-functions/#func-current-dateTime is supposed to return "the current dateTime ... from the dynamic context". And the XSLT 2.0 spec clearly says: "The current date and time represents an implementation-dependent point in time during processing of the transformation; it does not change during the course of the transformation."

--

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/

Current Thread

exslt random:random-sequence() and Math:random()
- a kusa - 18 Mar 2010 00:15:37 -0000
  - Michael Kay - 18 Mar 2010 08:16:35 -0000
    - Michael Kay - 18 Mar 2010 08:28:53 -0000
      - Mike Odling-Smee - 18 Mar 2010 12:11:03 -0000
      - Martin Honnen - 18 Mar 2010 12:18:22 -0000 <=
      - Michael Kay - 18 Mar 2010 12:27:29 -0000
      - Mike Odling-Smee - 18 Mar 2010 12:29:29 -0000
      - a kusa - 18 Mar 2010 13:05:42 -0000
      - Michael Kay - 18 Mar 2010 14:20:50 -0000

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