Re: [sca-assembly] Issue 123

[Mike Edwards <mike_edwards@uk.ibm.com>]

Folks,

I take this discussion to mean that
my original proposal to use ##any with mixed='true' is the right one.

Anish points out that this does mean
that the schema is more permissive than we want,
but this is the case all over our specifications
- that's what the additional normative 
statements are about.  We can't
expect XSD to provide everything we need.


Yours,  Mike.

Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431  
Email:  mike_edwards@uk.ibm.com

From:	Anish Karmarkar <Anish.Karmarkar@oracle.com>
To:	OASIS Assembly <sca-assembly@lists.oasis-open.org>
Date:	30/03/2009 22:29
Subject:	Re: [sca-assembly] Issue 123

---

If the type is xsd:string with mixed='true' then the
following will not 
be valid:

<value>
   <someValue>
     <someSubelement>...</someSubelement>
   </someValue>
</value>

The <value> element is meant to allow "inlining" of simple
type values 
as well as elements whose type is complex. A true 'mixed' type isn't 
what we want to allow but instead allow either inlined text (such as a
string, int etc) or element(s) but not both. I.e. the following won't be
allowed (by SCA not by schema):

<value>
   This is some value <ele>another value</ele>
</value>

I know the current schema allows this, but I don't of a way to design 
the schema to prevent it.

-Anish
--

ashok malhotra wrote:
> The XML Schema primer http://www.w3.org/TR/xmlschema-0/
> has an example of how to define an element that can contain mixed
content.
> This is exactly the same as Mike Edwards' suggestion except that the
> sequence is
> typed as xsd:string rather than xsd:any.
> 
> I suspect Mike used ##any to allow simple data values but that not
helpful.
> because you don't know what the simple types are and cannot validate
them.
> Thus 5.0 will look like a string in any case.  The simple types
will be 
> validated
> in the specific context where they are used.
> 
> Thus, unless Mike has other reasons to prefer ##any, xsd:string seems
> simpler and equally effective.

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