Subject: Re: [xsl] XSLT 2.0 empty string From: David Carlisle <davidc@xxxxxxxxx> Date: Mon, 28 Feb 2005 17:06:47 GMT |
> Even after the atomization process when as="xs:string?" is specified? > > What role does the 'as' attribute play when you get an empty sequence? yes as Michael commented in his original reply, if the select expresssion returns () (because the node isn't there) then if you specify that is of type xs:string? you get () as the ? specifically allows that outcome. If on the other hand you'd have said as="xs:string" then you'd have got a type error as you can't atomize () to get a string. David ________________________________________________________________________ This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________
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