RE: [xsl] Scope of uniqueness of generate-id()

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RE: [xsl] Scope of uniqueness of generate-id()

Subject: RE: [xsl] Scope of uniqueness of generate-id()
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Thu, 20 Nov 2008 17:05:41 -0000

> Until today I was thinking that xslt functions have no side 
> effects (provided extensions are not considered). 
> It has turned out that this is not correct.
> That changes the picture (at least for me).
> Many possible optimizations are not safe.

Yes, you will find this discussed in the XQuery formal semantics, I believe.

It's a very limited kind of side-effect - but it does have to be taken into
account by an optimizer.

Michael Kay
http://www.saxonica.com/

Current Thread
Re: [xsl] Scope of uniqueness of generate-id(), (continued) David Carlisle - 20 Nov 2008 13:17:29 -0000 David Carlisle - 20 Nov 2008 13:14:02 -0000 Florent Georges - 20 Nov 2008 14:04:18 -0000 Vladimir Nesterovsky - 20 Nov 2008 16:53:57 -0000 Michael Kay - 20 Nov 2008 17:06:08 -0000 <= John Snelson - 20 Nov 2008 17:13:07 -0000

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