[DFDL-WG] XML Schema do type references have to be qualified?

[Suman Kalia]

Mike -  In the absence of explicit qualification, you cannot unambiguously 
say whether type bar is in your namespace or notarget namespace.  It 
should be flagged as an error in my opinion... 



From:   Mike Beckerle <mbeckerle.dfdl at gmail.com>
To:     dfdl-wg at ogf.org
Date:   03/16/2012 05:04 PM
Subject:        Re: [DFDL-WG] XML Schema do type references have to be 
qualified?
Sent by:        dfdl-wg-bounces at ogf.org



So, I did some research, and answered my own question.

Section 3.3.4.2 of "Definitive XML Schema" by Walmsley, says that the
schema below is illegal as the name
"bar" will be interpreted as a reference to xsd:bar, not the 
targetNamespace.

However, it seems many XML Schema processors may be tolerant of this 
error.


On Fri, Mar 16, 2012 at 4:48 PM, Mike Beckerle <mbeckerle.dfdl at gmail.com> 
wrote:
> Suman,
>
> In and XMLSchema/DFDLSchema do I have to qualify the names of types?
>
> We have a bunch of test schemas written roughly like the example
> below. They all have the default unprefixed namespace as XML Schema's
> namespace. They also all have a target namespace.
>
> But some or all of the type references to named types use unqualified
> names. In my mind, that means they would be assumed to be in the XML
> Schema namespace, not the targetNamespace.
>
> On the other hand, the XML Schema validator doesn't complain. But that
> just means the schema is valid, not necessarily meaningful.
>
> Example here:
>
> <schema xmlns="http://www.ogf.org/dfdl/dfdl-1.0/XMLSchemaSubset"
> targetNamespace="http://example.com">
> <element name="foo" type="bar"/><!-- IS THIS LEGAL, no prefix on name
> of the type. -->
> <complexType name="bar">
>   <sequence/>
> </complexType>
> </schema>
>
>
> Mike Beckerle | OGF DFDL WG Co-Chair
> Tel:  781-330-0412



-- 
Mike Beckerle | OGF DFDL WG Co-Chair
Tel:  781-330-0412
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