Enumerations for validation and display

Enumerations for Validation and Display

Within a schema I use a enumeration facet to allow schema validation against
the set of required values for a given type. The enum defines the codified
values for this type. However, there is another requirement where the
textual description for a each of the allowable values is required and it
would be nice to be able to design a schema which could accomodate both of
these. As an example, say I have the following schema type :-

<xs:simpleType name="Size">
  <xs:restriction base="xs:string" >
    <xs:enumeration value="S" />
    <xs:enumeration value="M" />
    <xs:enumeration value="L" />
    <xs:enumeration value="XL" />
    <xs:enumeration value="XXL" />
  </xs:restriction>
</xs:simpleType>

In my web service request message a consumer uses one of the codified values
to indicate the required size.

However, say I also want to build a browser based application (perhaps
XForms) which will provide a 'drop down' list box control which displays the
descriptions for each size (Small, Medium, Large, etc..) as well as supply
the code when the form is submitted.

I would like to use my schema as the single source of codelists for both
purposes.

Can anyone help me find a workable solution ?

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