Maybe it's also interesting to mention that, while in XML Schema 1.1 the
Schema becomes valid, the instance

<apple/>
<apple/>
<apple/>

won't be valid still (based on my understanding, the third <apple/>
element will map to the element particle and the validator will still be
waiting for an element to map to the wildcard).

Radu

On Tue, 2008-06-24 at 18:13 +0100, Michael Kay wrote:
> To add to that, in XML Schema 1.1 the UPA rule is relaxed so that if
> an element can match both an element particle or a wildcard particle,
> the element particle wins. So this schema will become valid.
>  
> Michael Kay
> http://www.saxonica.com/
> 
>         
>         ______________________________________________________________
>         From: xmlschema-dev-request@w...
>         [mailto:xmlschema-dev-request@w...] On Behalf Of Michael
>         Glavassevich
>         Sent: 24 June 2008 17:08
>         To: xmlschema-dev@w...
>         Subject: Re: UPA example
>         
>         
>         
>         Yes, it violates UPA. After the first occurrence of the
>         wildcard there would be a choice between the wildcard and
>         element particles and the two overlap in what they accept.
>         
>         Michael Glavassevich
>         XML Parser Development
>         IBM Toronto Lab
>         E-mail: mrglavas@c...
>         E-mail: mrglavas@a...
>         
>         boris@c... wrote on 06/24/2008 10:55:03 AM:
>         
>         > Hi,
>         > 
>         > Consider the following schema:
>         > 
>         > <schema xmlns="http://www.w3.org/2001/XMLSchema"
>         >    targetNamespace="test" 
>         >         elementFormDefault="qualified">
>         > 
>         >   <complexType name="AnyTargetNamespace">
>         >     <sequence maxOccurs="unbounded">
>         >       <element name="apple" type="string"/>
>         >       <any namespace="##targetNamespace"
>         processContents="skip" 
>         > maxOccurs="unbounded"/>
>         >     </sequence>
>         >   </complexType>
>         > 
>         > </schema>
>         > 
>         > My interpretation of the specification suggests that this
>         schema
>         > violates the Unique Particle Attribution constraint in that
>         a
>         > content like this:
>         > 
>         > <apple/>
>         > <apple/>
>         > <apple/>
>         > 
>         > Can be validated in two ways:
>         > 
>         > <apple/> validated by element
>         > <apple/> validated by any
>         > <apple/> validated by any
>         > 
>         > Or:
>         > 
>         > <apple/> validated by element
>         > <apple/> validated by any
>         > <apple/> validated by element
>         > 
>         > Does anybody think this is not the case and if so, why?
>         > 
>         > Thanks,
>         > Boris
>         > 
>         > -- 
>         > Boris Kolpackov, Code Synthesis Tools
>         http://codesynthesis.com/~boris/blog
>         > Open source XML data binding for C++:
>         http://codesynthesis.com/products/xsd
>         > Mobile/embedded validating XML parsing:
>         http://codesynthesis.com/products/xsde
>         
>         
> 
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