Re: Usage of wsu:Id and xml:id in the WS Policy XML Schema

Felix,

For tracking purposes, so we don't drop the ball on this, I would prefer 
if an LC issue
were opened for this.

FWIW, I also have a preference for C.

Cheers,

Christopher Ferris
STSM, Software Group Standards Strategy
email: chrisfer@us.ibm.com
blog: http://www.ibm.com/developerworks/blogs/page/chrisferris
phone: +1 508 377 9295

public-ws-policy-request@w3.org wrote on 12/08/2006 07:15:50 AM:

> 
> This mail is based on some offline conversation between Asir, Chris,
> Paul and me.
> 
> The XML Schema document for the WS-Policy LC WD is not yet updated. The
> reason is that the latest revision
> http://dev.w3.org/cvsweb/~checkout~/2006/ws/policy/ws-policy.xsd?rev=1.6
> has a problem with the schema update for the resolution for
> http://www.w3.org/Bugs/Public/show_bug.cgi?id=3560 (enable the usage of
> xml:id):
> 
> If you use xml:id at the <Policy element> in an instance with the
> current schema, you will get an error. You can't use xml:id, typed as an
> ID, on an element which has an ID attribute (like wsu:Id) specifically
> declared for it.
> 
> There are three solutions for the problem:
>   a) publish two flavors of the schema, one with xml:id, one with wsu:Id
>   b) declare two subtypes which are accessible via xsi:type:
> <Policy ... xsi:type="xid-flavor" xml:id="boo" ...> versus <Policy ...
>   xsi:type="wsu-flavor" wsu:id="boo" ...>
>   c) delete the explicit reference to <xs:attribute ref="wsu:Id"/> .
> This would make both xml:id and wsu:Id extensibility points.
> 
> I have a high preference for c), including a note in the WD to warn
> schema users (don't use other ID attributes than these two), to avoid
> the confusion created by deleting the explicit reference to
> <xs:attribute ref="wsu:Id"/>.
> 
> I have not opened an issue on this and not reopened 3560, since the
> normative text has precedence over the schema anyway. Hopefully we can
> resolve this without a LC issue.
> 
> Felix
> 
>