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A quick query about the 'value' of a p:with-option's select expression.

From: Philip Fennell <Philip.Fennell@bbc.co.uk>
Date: Mon, 22 Jun 2009 15:50:14 +0100
Message-ID: <F3685F4A877F284F8054E328390447D14C6EAD@bbcxues17.national.core.bbc.co.uk>
To: "XProc Dev" <xproc-dev@w3.org>
Where I invoke an XProc step thus (passing a sequence in the
'collection' option):

<ato:retrieveEntry env="int">
  <p:with-option name="collection" select="('foo', 'bar')"/>

and within the step declaration I attempt to process the 'collection'
option thus:

<p:add-attribute match="/c:request" attribute-name="href">
  <p:with-option name="attribute-value"
                       string-join(($collection), '/')

I notice that the string-join on the sequence ('foo', 'bar') returns
'foobar' instead of 'foo/bar' which is what I'd have expected.

Given that I have set xpath-version="2.0", am I right in assuming that a
sequence returned by an XPath expression, in this context, is
automatically concatenated to a single xs:untypedAtomic value rather
than honouring the sequence as it is declared?

Is there an explanation for this behaviour?

I'm using Calabash 0.9.10.


Philip Fennell

>XML Developer (The Forge)
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Received on Monday, 22 June 2009 14:56:12 UTC

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