xml-dev - RE: XSchema Spec, Sections 2.0 and 2.1 (Draft 1)

["Rick Jelliffe" <ricko@allette.com.au>]

> From:  Simon St.Laurent
 
> <!ELEMENT XSC:XSchema (Doc?, (ElementDecl | Entity | Notation | 
> Namespace | 
> XSchema)*)>
> <!ATTLIST XSC:XSchema
>     XSC:Version CDATA #FIXED "1.0"
>     XSC:MimeType CDATA "application/xml"
>     XSC:FileExtension CDATA "xml">
 
Almost all DTDs, or fragments which can stand by themselves as
reuseable components, end up with a similar stucture which allows
metadata headers, the actual body, and a section for annotations 
and floating elements.

So I suggest that you build this into XSchema
from the start: you can do this simply by using HTML's meta element,
and by adding HTML's body element at the end, to fit in any
miscellaneous text that the person wants to add. (I know that this
may seem to duplicate XSC:Doc, but for any sizeably documented DTD,
the declaration elements should come before the documentation elements
so that the receiveing processor does not have to wait for long periods
for the stuff it is really interested in.)

Also, I have allowed multiple title elements, to be differentiated
according to language, for i18n. 

<!-- ===================================================== -->
<!-- An XSchema has a top-level structure sinmilar to HTML -->
<!ELEMENT XSC:XSchema (XSC:head?, XSC:body, HTML:body?)>
 <!ATTLIST XSC:XSchema
     XSC:Version CDATA #FIXED "1.0" >

<!-- Multiple title for i18n. Multiple meta for information
such as file extension and MIME types --> 
<!ELEMENT HTML:head    (HTML:title*, HTML:meta*)>

<!ELEMENT HTML:title   ( #PCDATA )>
 <!ATTLIST HTML:title
	XML:lang CDATA "en-US" ><!-- i.e. this is the default -->

<!ELEMENT HTML:meta
 <!ATTLIST HTML:meta
	http-equiv NMTOKEN #IMPLIED
	name       NMTOKEN #IMPLIED
	content    CDATA #REQUIRED
	XML:lang   CDATA "en-US"  >


<XSC:Body 
	( Doc?, (ElementDecl | Entity | Notation | 
 	Namespace |  XSchema)*)>
...
<!-- ===================================================== -->

(For more information on this approach, refer Chapter 7 
"The Document Shell" in my book. )

Rick Jelliffe

==========================================================
The XML & SGML Cookbook, by Rick Jelliffe
Charles F. Goldfarb Series on Open Information Management
656 pages + CD-ROM, Prentice Hall 1998, ISBN 0-13-614223-0
http://www.sil.org/sgml/jelliffeXMLAnn.html
http://www.phptr.com/  > Book Search > "Jelliffe"
http://www.amazon.com/exec/obidos/ASIN/0136142230/002-4102466-3352420 



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