iLingo - The Language of Insurance e-Business

(C) 1999 Lexica, LLC

3.4.3.1. Attribute Set Refinement

Using Attribute Set Refinement, one can add new attributes to existing element definitions. Here's an example of a document that refines the iLingo driver element by adding a new corrective.lenses attribute (the new element is called driver):

  <auto.line.of.business xmlns="urn:x-lexica:ilingo:auto.line.of.business:en" ...>
    ...
    <drivers>
      <x:driver xmlns:x="urn:x-lexica:ilingo:carrier-extension:carrierx:en" 
                object.id="object:foo:1234" 
                corrective.lenses="required" ...>
       ... 
      </x:driver>
    </drivers>
    ...
  </auto.line.of.business>

Here's a snippet of the schema that refines the iLingo driver element's attribute set:

  <schema xmlns="http://www.w3.org/1999/XMLSchema" ...>
    ...
    <import schemaName="urn:x-lexica:ilingo:auto.line.of.business:en"
            schemaAbbrev="alob"/>
    ...
    <element name="driver">
      <archetype>
        <refines name="driver" schemaAbbrev="alob"/>
        <attribute name="corrective.lenses" type="string">
          <enumeration>
            <literal>required</literal>
            <literal>not-required</literal>
          </enumeration>
        </attribute>
      </archetype>
    <element>
    ...
  </schema>

More examples of Attribute Set Refinement can be found in the [XML Schema Refinement Task Force Report] as well as the [XML Schemas] specification.