Re: [xml] <!ELEMET declarations

[Daniel Veillard <veillard redhat com>]

On Mon, May 30, 2005 at 09:45:28AM +0200, Morten W. J. wrote:
> child elements and about wildcards and grouping.  Eg.
> <!ELEMENT node (a, b, c, d)* >
> However I cannot find a way to define it so that,  in the example above 
> element "node" is allowed exactely one a, one b, one c and one d sub element 
> but in arbitrary order! Of cause I could construct all possible combinatins 
> and OR them, but in my real DTD i have around 40000 combinations a couple of 
> times.
> Exists there a language construct for that purpose?

   At the DTD level, no. In Schemas you have xsd:all for this. In Relax-NG
there is the interleave construct.

> 2. Is there a way to copule a attribute definition together with a element 
> declaration? That is,  i would like to define that element "node" must have 
> attribute "type" with a value from a enumeration, and depending on the value 
> of "type" a specific ELEMENT declaration shall be selected. For example: 
> 

  You can't do that in DTD or Schemas. This is possible by building a choice
with two branches one with the attribute and one without in Relax-NG.

Daniel

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