Re: Entity definition in XML Schema

I can only tell you that the schema WG considered the issues, and decided 
not to include entities for the reason I described.  Indeed, early working 
drafts had them, and they were removed as insufficiently compatible with 
XML 1.0.

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Noah Mendelsohn                              Voice: 1-617-693-4036
IBM Corporation                                Fax: 1-617-693-8676
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Jeffrey Yasskin <jyasskin@mail.utexas.edu>
04/09/2002 05:22 PM

 
        To:     noah_mendelsohn@us.ibm.com
        cc:     W3C XML Schema Comments list <www-xml-schema-comments@w3.org>
        Subject:        Re: Entity definition in XML Schema


Oh. Thanks.
Would it be possible to put something in XML Schema now that will let it
provide entities for XML 1.1 whenever that's released?
Or, the Schema processor could output a DTD containing just entities
before it parses the XML.
Or is this not really a problem with XML Schema?

Jeffrey Yasskin

On Tue, 2002-04-09 at 14:19, noah_mendelsohn@us.ibm.com wrote:
> Right.  Entities are a feature of XML 1.0.  If you read the XML 1.0 
> specification carefully, you'll see that it provides no means for 
> replacing DTDs as the means for defining entities.  Therefore, there was 

> nothing that the XML schema workgroup could have done in its own 
language 
> to define an entity, except perhaps to define a mechanism that generated 
a 
> DTD.  This is an aspect of XML that is currently not accessible.  To fix 

> this, XML 1.0 in itself would have to be changed.
> 
> ------------------------------------------------------------------
> Noah Mendelsohn                              Voice: 1-617-693-4036
> IBM Corporation                                Fax: 1-617-693-8676
> One Rogers Street
> Cambridge, MA 02142
> ------------------------------------------------------------------
> 
>

Received on Wednesday, 10 April 2002 18:07:59 UTC