Re: XSchema: Notation attributes

Toby Speight (tms@ansa.co.uk)
04 Jun 1998 19:03:10 +0100


Ron> Ron Bourret <URL:mailto:rbourret@dvs1.informatik.tu-darmstadt.de>

=> In article <199806041616.SAA11609@berlin.dvs1.tu-darmstadt.de>, Ron
=> wrote:

Ron> John Cowan wrote:

>> I have more problems with notations, because it doesn't make sense
>> to me to have to redeclare every notation name with every notation
>> attribute, since any notation attribute can refer to any notation
>> name. Thus I treat notation attributes like other attributes with
>> predefined types.

Ron> I'm not sure what you mean by redeclaring every notation name
Ron> with every attribute. In the above structure, the notation value
Ron> is simply a NMTOKEN. Why would I need to redeclare notation
Ron> names? Are you thinking that the NotationValue attribute is an
Ron> enumerated (not NMTOKEN) attribute?

I think the confusion is caused by my misunderstanding. From your DTD:

Ron> <!ELEMENT NotationType (NotationValue+)>
Ron> <!ELEMENT NotationValue (#PCDATA)>
Ron> <!ATTLIST NotationValue
Ron> Notation IDREF #REQUIRED>

In particular, NotationType contains a list of Notation values. Why?
What's wrong with the following?

<!ELEMENT NotationType EMPTY>

--