Re: [xsl] Using saxon:assign and testing content of variable

[Dan Vint <dvint@xxxxxxxxx>]

What you see is the first level of content that only gets added to the 
variable when a page number should be generated. In that choice you see one 
use I need to tell if I have been through this loop once already or not as 
the <otherwise> adds additional page numbers and a comma. So I'm trying to 
test the content of the variable to see if something has been assigned already.

I thought that a count($pageNumber) would have returned 3 for the 3 nodes I 
added to the variable, instead I get a consistent 1.

..dan

At 02:43 PM 9/20/2005, David Carlisle wrote:

> > First what is the proper way to reset the variable to be empty and
> > hopefully no nodes in the node-set? Does a simple <saxon:assign
> > name="pageNumber"/> do it?
>
> ther's no "proper" way to reset a variable in a functional
> language saxon:assign really cuts across the whole declarative language
> paradigm and really once you use something like that you aren't really
> using XSLT at all.
>
> However I don't understand your comment
>
> > What I'm at a loss for is the proper test in the <choice> to see if there
> > is content in $pageNumber.
>
> You don't need to test this you know exactly the content of the variable
>                                <fo:leader leader-pattern="dots"
> leader-length="1in" />
>                                <fo:basic-link
> internal-destination="{generate-id()}">
>                                      <fo:page-number-citation
> ref-id="{generate-id()}" />
>                                 </fo:basic-link>
>
> so it is a result tree fragment corresponding to those elements.
>
> I can't really tell from the small fragment that you posted but I
> suspect that you are trying to get XSLT to process page numbers and
> other values calculated by an FO engine. That never works,the XSLT
> process does not know _anything_ about XSLFO and XSLFO does not know
> _anything_ about XSLT. As far as the xslt is concerned there is nothing
> special about  <fo:page-number-citation>  it could just as well be
> <jhgifgi> it's just an element node in a result tree. XSLT has to
> construct the entire FO document to be processed and teh XSLT
> transformation finishes before the FO engine starts.
>
> David
>
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Danny Vint

Specializing in Panoramic Images of California and the West
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