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Re: Understanding anyAttribute namespace="##any" and anyAttribute namespace="##local"

From: Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Tue, 02 Nov 2004 09:43:36 +0000
To: "W. Eliot Kimber" <ekimber@innodata-isogen.com>
Cc: xmlschema-dev@w3.org
Message-ID: <f5b1xfc1t87.fsf@erasmus.inf.ed.ac.uk>

"W. Eliot Kimber" <ekimber@innodata-isogen.com> writes:

> I'm trying to understand how anyAttribute works and I'm getting a
> result that seems to be incorrect but I'm sure it's my lack of
> understanding.
>
> What I have in my schema is this declaration:
>
>    <xs:complexType name="metadata">
>      <xs:choice maxOccurs="unbounded" minOccurs="0">
>        <xs:element name="metadata" type="mtbitopic:metadata"/>
>        <xs:element name="metadataitem" type="mtbitopic:metadataitem"/>
>        <xs:any namespace="##other"/>
>      </xs:choice>
>      <xs:anyAttribute namespace="##local"/>
>    </xs:complexType>
>
> Note the "##local" for anyAttribute. The attributeFormDefault is set
> to "unqualified".
>
> In my instance governed by this schema, I have this markup:
>
> <metadata foo="bar"/>
>
> However, when I validate the document, both oXygen and Stylus Studio
> report that the attribute "foo" is not allowed for the element
> metadata.
>
> What basic but subtle aspect of XSD am I missing here.

You need

   <xs:anyAttribute namespace="##local" processContents="lax"/>

The default for processContents is 'strict', which in turn means "any
unprefixed attribute, provided I can find a top-level declaration for
it".

With that change, XSV is happy with your example.

> Also, is there a way to say that you want to allow any qualified or
> unqualified attributes? It doesn't appear to be the case but I have
> such a hard time decoding the spec itself that I'm not sure what the
> actual syntax of the namespace= attribute is, so I'm going off what
> I've learned from the various tutorials I could find online.

Yes, use namespace="##any".

ht
-- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
    2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
            Fax: (44) 131 650-4587, e-mail: ht@inf.ed.ac.uk
                   URL: http://www.ltg.ed.ac.uk/~ht/
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Received on Tuesday, 2 November 2004 09:43:54 UTC

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