Re: [xml-dev] local unqualified element names and default namespaces

["Anne Thomas Manes" <atmanes@gmail.com>]

See http://atmanes.blogspot.com/2006/07/short-explanation-of-xml-namespaces.html.

On 11/12/06, Michael Kay <mike@saxonica.com> wrote:
> > If I define an unqualified local element such as 'name' in:
>
> My first question would be *why* you would want to use this option?
> >
> > <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";
> >         targetNamespace="http://www.abc.com";
> > xmlns="http://www.abc.com";
> >         elementFormDefault="unqualified">
> >
> >     <xsd:element name="MyAddress" type="AddressType"/>
> >
> >     <xsd:complexType name="AddressType">
> >         <xsd:sequence>
> >             <xsd:element name="name" type="xsd:string"/>
> >         </xsd:sequence>
> >     </xsd:complexType>
> >
> > </xsd:schema>
> >
> >
> > Then, if I have the following instance:
> >
> > <MyAddress xmlns="http://www.abc.com";>
> >     <name>Pete</name>
> > </MyAddress>
> >
> > when deciding what to validate 'name' against, is it treated
> > as if it is {no namespace}:name, {http://www.abc.com}:name
> > (in which case validation will
> > fail)
>
> My understanding is that <name> is required to be in no namespace, and
> therefore this instance is not valid.
>
> or something else?
> >
> > Going a bit further... if (validated by another schema) I have:
> >
> > <MyDetails xmlns="http://www.abc.com";>
> >     <ans:MyAddress xmlns:ans=http://www.abc.com/addr>
> >         <name>Pete</name>
> >     </ans:MyAddress>
> > </MyDetails>
> >
> > Is name's full name {no namespace}:name (due to being defined
> > as unqualified), {http://www.abc.com}:name (due to the
> > default namespace being http://www.abc.com), or
> > {http://www.abc.com/addr}:name (due to being local to ans:MyAddress)?
> >
>
> The element in your instance is in namespace http://www.abc.com/, under the
> rules of XML Namespaces. This isn't affected by the schema. The schema says
> that you can only have a {}name element here, so this instance is not valid.
>
> Michael Kay
> http://www.saxonica.com/
>
>
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