Re: args tag in RIF XML serialization

Hi Thomas,

(added today: I find that never-sent reply in my draft box; sorry for the 
huge delay; fortunately Jürgen pinged me about it :-)

Thomas Krekeler wrote on 22/09/2010 16:02:39:
> 
> which of the following (partial) XML code is valid RIF XML?
> 
> 1) No args tag:
> 
> <Atom>
>    <op><Const type="&rif;iri">http://test.org/P</Const></op>
> </Atom>
> 
> 
> 2) Empty args tag:
> 
> <Atom>
>    <op><Const type="&rif;iri">http://test.org/P</Const></op>
>    <args ordered="yes"/>
> </Atom>

The first one is valid RIF/XML: no args tag (in general: no empty role 
elements).

> In [1] there is no question mark characterizing the args tag as 
optional,
> so I would go for 2 and view 1 as invalid.

This is an error. Will be corrected when we publish an erratum.

> By reading the XML schema ([1]) on the other hand I think 1 is valid
> but 2 is not.

The XML Schema is correct.

Cheers,

Christian

IBM
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