[tei-council] Wot is wrong with my ODD?

[Sebastian Rahtz]

On 7 Jun 2014, at 13:26, Lou Burnard <lou.burnard at retired.ox.ac.uk> wrote:

> A little more experimentation shows that @allowText only works as you'd 
> expect in a very small number of specific cases, and can also lead to 
> your generating an invalid schema.

we need to decide whether it _should_ work in the other cases.

> For example:
> 
>   <elementSpec ident="stuff">
>           <desc>élément racine d'un schéma simplissime</desc>
>           <content allowText="true">
>                <elementRef key="bit"/>
>               <elementRef key="bob"/>
>               <elementRef key="t1"/>
>           </content>
>         </elementSpec>
> 
> does what you'd expect and generates the following RNC
> 
>  element stuff { (text | bit | bob | t1)* }
> 
> (it  produces the following nonsense in DTD though
> 
> <!ELEMENT stuff (#PCDATA | bitbobt1)*>

> - that's a bug!)

indeed. i agree.

> 
> Placing @allowText on <alternate> or <sequence> however has no effect:

> 
>  <content >
>               <alternate allowText="true" minOccurs="0" 
> maxOccurs="unbounded">
>                 <elementRef key="bit"/>
>                <elementRef key="bob"/>
>               <elementRef key="t1"/>
>               </alternate>
>           </content>
> 
> generates
> 
> element stuff { ( bit | bob | t1)* }
> 
> (but at least the DTD generated is correct)

these are bugs, I agree

> 
> The presence of @allowText also implies alternation of its children.
> 
> Hence:
> 
>  <content  allowText="true">
>               <alternate  minOccurs="0" maxOccurs="unbounded">
>                 <elementRef key="bit"/>
>                <elementRef key="bob"/>
>               <elementRef key="t1"/>
>               </alternate>
>           </content>
> 
> generates this monster
> * element stuff { (text | (text | bit | bob | t1)*)* }*

that should be factored out, I agree.

> Definitive word must await the return of the mighty Rahtz from 
> Brussells, where I assume he is busy ensuring the election of Herr Juncker.

only if Mr Juncker is interested in RDM.
--
Sebastian Rahtz      
Director (Research) of Academic IT
University of Oxford IT Services
13 Banbury Road, Oxford OX2 6NN. Phone +44 1865 283431

Não sou nada.
Nunca serei nada.
Não posso querer ser nada.
À parte isso, tenho em mim todos os sonhos do mundo.