#PCDATA "element": Yes!
Nils Klarlund wrote: > > An alternative approach would have declared "content" to simply > consist of just element nodes and text nodes ("text nodes" as in > XPATH) representing character data. Then there would be no need for > (2), since a content model now describes a regular language over the > alphabet consisting of what you would expect: element names and the > token text() (or #PCDATA). And, you'd be able to describe, say, HTML > with Appendix elements that must appear at the end: > > ((#PCDATA | H1 | H2 |...)*, Appendix*) > > So, the distinction between element content and mixed content is a > needless one that both restricts what can be expressed and that > muddles the conceptual framework. (The way of treating content just > outlined is what we chose for the DSD schema notation, incidentally.) I was already wondering why this was not done in the current XML schema definition: In my opinion, the whole concept of a "content model" could be removed, removing some possibilities for inconsistencies: Implementing XML schema, you are always wondering about things like "what, if the given content type 'empty', and an explicit <type> is given. Does the given type override the content specification? Do I trow an error? But maybe the given type is empty, too, so I need to check for consistency..... Best regards Stefan -- Stefan Haustein University of Dortmund Computer Science VIII www-ai.cs.uni-dortmund.de xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ or CD-ROM/ISBN 981-02-3594-1 Unsubscribe by posting to majordom@i... the message unsubscribe xml-dev (or) unsubscribe xml-dev your-subscribed-email@your-subscribed-address Please note: New list subscriptions now closed in preparation for transfer to OASIS.
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