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Subject: Re: [ubl-ndrsc] Rule: 94 Nil - Duplicate

At 10:54 PM 7/15/2003 +0800, Chin Chee-Kai wrote:
>Amendment Required because prohibiting xsd:nil does NOT
>equate with prohibiting empty content element.
>Suggested change:
>[R 94]: The nillable attribute MUST NOT be used.
>         Empty content element MUST NOT be instantiated
>         UNLESS it is expressly a user-intended indication
>         to instantiate empty content for a given element.

This isn't quite right. In schemas only elements of type string can be 
presented as empty in a data stream without using the NIL attribute. The 
user indication that nil is the appropriate interpretation is to use this 
schema attribute (or we have to create our own method).

We need a statement more like this:

Any element declared to have data, must not appear in a data stream as an 
empty element. Elements declared as EMPTY may only appear in the data 
stream as an empty element. This rule then prevents the use of the nillable 
attribute in the schema definition and the corresponding xsi:nil attribute 
in the date stream.


>Best Regards,
>Chin Chee-Kai
>Tel: +65-6820-2979
>Fax: +65-6743-7875
>Email: cheekai@SoftML.Net
>On Tue, 15 Jul 2003, Lisa-Aeon wrote:
> >>Rules for Voting:  Each email will have only one rule in it, I will try to
> >>mark the rules that group with it, or rules that might duplicate it.  The
> >>membership has 5 working days to bring forth objection or discussion, after
> >>the 5 working days, if there are no objections, the rule will be assumed to
> >>be "ACCEPTED" and be given to the LCSC for their implementation.
> >>
> >>Please Reply leaving first email in Reply.
> >>
> >>Voting period on this rule ends:  July 22, 2003
> >>
> >>*******************************
> >>[R 94]  The nillable attribute MUST NOT be used
> >>
> >>Note:  Duplicate.  See Rule 32.
> >>
> >>
> >>
> >>
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