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Re: Required attributes are not required by the XProc schema?

From: Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Thu, 30 Jul 2009 17:26:32 +0100
To: George Cristian Bina <george@oxygenxml.com>
Cc: XProc Dev <xproc-dev@w3.org>
Message-ID: <f5bk51qgmrr.fsf@hildegard.inf.ed.ac.uk>
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George Cristian Bina writes:

> I noticed for example that the error steps is described in the spec
> http://www.w3.org/TR/xproc/#c.error
> as
> <p:declare-step type="p:error">
>      <p:input port="source" primary="false"/>
>      <p:output port="result" sequence="true"/>
>      <p:option name="code" required="true"/>                       <!-- 
> QName -->
> </p:declare-step>
>
> Note the required="true" set on the code option.
> In the schema however we have a code attribute defined as optional:

That's because the following is legal:

 <p:error>
  <p:with-option name="code" select="'foo'"/>
 </p:error>

It would be possible in RelaxNG (or XML Schema 1.1) to write the
co-occurence constraints that relate option attributes to p:with-option
children, but I don't blame Norm for ducking on that one. . .

ht
- -- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
                         Half-time member of W3C Team
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 651-1426, e-mail: ht@inf.ed.ac.uk
                       URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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Received on Thursday, 30 July 2009 16:27:13 GMT

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