Re: different attribute value sets for the same element ref?

Hi Giles,

> I thought about doing it something like this:
>
> <xs:element name="home">
>     <xs:element ref="category">
>         <xs:attribute ref="name">
>             <xs:choice>
>                 ??????
>             </xs:choice>
>         </xs:attribute>
>     </xs:element>
> </xs:element>
>
> but I can't figure out how it should go.

In XML Schema choices between values are provided by restricting the
relevant simple type with enumerated values, as follows:

  <xs:attribute name="name">
    <xs:simpleType>
      <xs:restriction base="xs:token">
        <xs:enumeration value="X" />
        <xs:enumeration value="Y" />
        <xs:enumeration value="Z" />
      </xs:restriction>
    </xs:simpleType>
  </xs:attribute>

Cheers,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/