Re: [xml-dev] XML Schema question re: duplicate element definitionswhen

[Rick Jelliffe <rjelliffe@allette.com.au>]

In your case, the elements are locally scoped, yes. It has nothing to do 
with elementFormDefault. They are local elements because they are 
specified using the name attribute, not references (to a global element 
with that name.) The fact that they are specified using a direct type 
rather than a type reference also does not change that they are locally 
scoped.

What the elementFormDefault has to do with is which namespace these 
elements are in. You can have a local element and a global element with 
different type definitions both of which have the same element name and 
namespace.

Cheers
Rick Jelliffe

Anne Thomas Manes wrote:
> Is this valid?
>
> <schema xmlns="http://www.w3.org/2001/XMLSchema";
>   targetNamespace="urn:example:duplicateElements"
>   elementFormDefault="qualified">
>  <complexType name="foo">
>    <sequence>
>      <element name="foobar" type="string"/>
>    </sequence>
>  </complexType>
>  <complexType name="bar">
>    <sequence>
>      <element name="foobar" type="string"/>
>    </sequence>
>  </complexType>
> </schema>
>
> Note two elements named "foobar".
>
> XML Schema spec [1] says:
>
> "Locally scoped attribute and element declarations are special with
> regard to symbol spaces. Every complex type definition defines its own
> local attribute and element declaration symbol spaces, where these
> symbol spaces are distinct from each other and from any of the other
> symbol spaces. So, for example, two complex type definitions having the
> same target namespace can contain a local attribute declaration for the
> unqualified name "priority", or contain a local element declaration for
> the name "address", without conflict or necessary relation between the 
> two."
>
> But given that the schema specifies elementFormDefault="qualified",
> are the "foobar" elements locally scoped?
>
> [1] http://www.w3.org/TR/xmlschema-1/#concepts-nameSymbolSpaces
>
> Thanks,
> Anne
>
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