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[Bug 2054] R-065: Issues with the rules for wildcard union, subset, and intersection

From: <bugzilla@wiggum.w3.org>
Date: Fri, 09 Sep 2005 02:29:31 +0000
To: www-xml-schema-comments@w3.org
Cc:
Message-Id: <E1EDYdv-0003Cd-Rx@wiggum.w3.org>

http://www.w3.org/Bugs/Public/show_bug.cgi?id=2054

           Summary: R-065: Issues with the rules for wildcard union, subset,
                    and intersection
           Product: XML Schema
           Version: 1.0
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XSD Part 1: Structures
        AssignedTo: ht@w3.org
        ReportedBy: sandygao@ca.ibm.com
         QAContact: www-xml-schema-comments@w3.org


- The rules for "Schema Component Constraint: Attribute Wildcard Union" have 
the following problems:
  - Various references to "intersection" in this section should be "union". 
  - Bullet 4 gives the rule for "...the two are negations of different 
namespace names..." and indicates the result in not expressible, but in fact is.

See:
http://lists.w3.org/Archives/Member/w3c-xml-schema-ig/2001May/0027.html
Henry's response:
http://lists.w3.org/Archives/Member/w3c-xml-schema-ig/2001Jun/0017.html 

- In addition, in a separate email, the commentator points out a problem with 
wildcard subset, "##other" and absent. For example, if wildcard "w2", say, 
equals "absent", and wildcard "w1" is "not some-uri", then, "absent" is allowed 
by "w2", not allowed by "w1", and yet the rules for subset indicate that "w2" 
is a subset of "w1".

See:
http://lists.w3.org/Archives/Member/w3c-xml-schema-ig/2001Jun/0028.html
Henry's response:
http://lists.w3.org/Archives/Member/w3c-xml-schema-ig/2001Jun/0011.html 

As a result of these exchanges, the commentator proposes the following 
modifications to wildcard union, subset and intersection:

http://lists.w3.org/Archives/Member/w3c-xml-schema-ig/2001Jun/0028.html
Received on Friday, 9 September 2005 02:29:40 GMT

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