Re: [xsl] How to detect if the context item exists

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Subject: Re: How to detect if the context item exists
From: David Carlisle <davidc@xxxxxxxxx>
Date: Thu, 30 Jun 2011 19:47:23 +0100

On 30/06/2011 18:33, stf@xxxxxxxx wrote:

Hello,

I need to detect inside a named template if the context item is defined,
but exists(.) and (. castable as xs:anyType) fail, because, you know,
the context item is not defined. Any suggestions?

Thanks,

Stefan

as Michael noted you can't do this within the template, however the places that the context item is or is not defined are (I think) all statically detectable, so you can have an additional boolean flag that you set to false when calling from within a function body and set to true elsewhere (more or less).

Alternatively of course you can just make sure the context item is always defined for example by wrapping the named template in <xsl:for-each select="$somedefaultcontext"> <xsl:call-template </.. </...

David

Current Thread
How to detect if the context item exists stf - 30 Jun 2011 17:34:05 -0000 Michael Kay - 30 Jun 2011 17:43:47 -0000 Hank Ratzesberger - 30 Jun 2011 17:44:13 -0000 David Carlisle - 30 Jun 2011 18:47:37 -0000 <= Michael Kay - 30 Jun 2011 20:23:14 -0000 Joel Dubien - 30 Jun 2011 21:25:25 -0000 Syd Bauman - 30 Jun 2011 23:10:45 -0000 Michael Kay - 30 Jun 2011 23:25:19 -0000

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