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RE: Referencing an XProc variable in p:split-sequence/@test

From: <vojtech.toman@emc.com>
Date: Mon, 7 May 2012 10:05:37 -0400
To: <xproc-dev@w3.org>
Message-ID: <F3C7EBECE80AC346BE4D1C5A9BB4A41F2ED2B087E7@MX11A.corp.emc.com>
Hi Florent,

You cannot refer to a variable in p:split-sequence as the 'test' XPath expression is evaluated using the step XPath context (no variable bindings available). A solution is to do something like this:

<p:split-sequence>
  <p:with-option name="test" select="concat(' name(/*) eq '",$elem,"')"/>
</p:split-sequence>

Regards,
Vojtech

--
Vojtech Toman
Consultant Software Engineer
EMC | Information Intelligence Group
vojtech.toman@emc.com
http://developer.emc.com/xmltech


> -----Original Message-----
> From: fgeorges@gmail.com [mailto:fgeorges@gmail.com] On Behalf Of
> Florent Georges
> Sent: Monday, May 07, 2012 3:40 PM
> To: XProc Dev
> Subject: Referencing an XProc variable in p:split-sequence/@test
> 
>   Hi,
> 
>   I have the following pipeline, which returns as expected the
> document with element 'one' as result:
> 
>     <p:declare-step xmlns:p="http://www.w3.org/ns/xproc"
>                     xmlns:c="http://www.w3.org/ns/xproc-step"
>                     name="pipeline"
>                     version="1.0">
> 
>        <p:input port="source" sequence="true" primary="true">
>           <p:inline>
>              <one/>
>           </p:inline>
>           <p:inline>
>              <two/>
>           </p:inline>
>        </p:input>
> 
>        <p:output port="result" sequence="true" primary="true"/>
> 
>        <p:split-sequence test="name(/*) eq 'one'"/>
> 
>     </p:declare-step>
> 
>   If I replace the above split sequence step with the following (that
> is, simply creating a variable to get the name of the element out of
> the XPath expression itself):
> 
>     <p:variable name="elem" select=" 'one' ">
>        <p:empty/>
>     </p:variable>
>     <p:split-sequence test="name(/*) eq $elem"/>
> 
> then I get the following error:
> 
>     SEVERE: Underlying exception: net.sf.saxon.trans.XPathException:
>     Undeclared variable in XPath expression: $elem
> 
>   From my reading, using an XProc variable in a p:split-sequence/@test
> expression is allowed.  Did I miss something, or is it a bug in
> Calabash? (latest Github content for Saxon 9.4+)
> 
>   Regards,
> 
> --
> Florent Georges
> http://fgeorges.org/
> http://h2oconsulting.be/
> 
Received on Monday, 7 May 2012 14:06:31 GMT

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