Bug(s) in definition of <DEFINITIONS> and <INFO>?

[Steve Lowe]

I would advocate minOccurs=0 on the choice. While an empty DEFINITIONS
section is superfluous, I don't see any reason to preclude it.

Also, the verbal spec at http://www.us-vo.org/VOTable/VOTable-1-0.htm
section 3.1 is, I think, unclear on whether more than one COOSYS is
allowed. It says
"This element may contain a definition of a coordinate system, stored in
a COOSYS element..."
"There may also be one or more PARAM elements..."

So maybe there needs to be a little edit there.

Steve

Ed Shaya wrote:
> 
>         Sounds to me that you want choice instead of sequence or all. This will
> allow an unordered list of arbitrary length:
> 
>       <xs:choice maxOccurs="unbounded">
>         <xs:element ref="COOSYS"/>
>         <xs:element ref="PARAM"/>
>       </xs:choice>
> 
> The choice takes the default minOccurs="1" because if
> there is a DEFINITIONS tag, there should be at least one
> child.
> 
> Ed
> 
> Francois Ochsenbein wrote:
> >
> > Thank you, Steve, for preporting the problem: in the <DEFINITIONS>
> > there may exist any number of occurences of both <COOSYS> and <PARAM>
> > -- the original intention was to specify that within <DEFINITIONS>
> > the order is not important, e.g. that
> >      <DEFINITIONS>
> >        <COOSYS .../>
> >        <PARAM .../>
> >        <PARAM .../>
> >        <COOSYS .../>
> >      </DEFINITIONS>
> > should be acceptable. The <xs:sequence> forbids this...
> >
> > I've made the appropriate corrections in the version at
> >     http://vizier.u-strasbg.fr/xml/VOTable.xsd
> > (Roy should replace the current version at
> >     http://us-vo.org/xml/VOTable.xsd )
> >
> > BTW, following Markus' message, shouldn't the XML-Schema and DTD be
> > referred as    http://xml.ivoa.net/VOTable.xsd  ?
> > or some similar name ?
> >
> > --Francois
> > ================================================================================
> > Francois Ochsenbein       ------       Observatoire Astronomique de Strasbourg
> >    11, rue de l'Universite F-67000 STRASBOURG       Phone: +33-(0)390 24 24 29
> > Email: francois at astro.u-strasbg.fr   (France)         Fax: +33-(0)390 24 24 32
> > ================================================================================

-- 
Steve Lowe
Smithsonian Astrophysical Observatory
Harvard-Smithsonian Center for Astrophysics
slowe at cfa.harvard.edu
1-617-496-1661