Re: Could anyone explain this schema structure?



wesley.hall@xxxxxxxxx wrote:


"<xs:element name="shoesize">
  <xs:complexType>
    <xs:simpleContent>
      <xs:extension base="xs:integer">
        <xs:attribute name="country" type="xs:string" />
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>
</xs:element>"

What I dont understand here is the location of the xs:attribute element
in the schema. It seems to suggest that the attribute is a child of the
character data value (xs:extension).


What you see is an anonymous type definition of a complex type for an element that has a simple content but an attribute.
If you want to have an element have attributes then in terms of the W3C XML schema language that element always has a complex type, even if its content is empty or a simple content. So in terms of the type system the simple base type xs:integer is extended to define a complex type with simple element contents and one attribute.
You might not like it but that is the way it is supposed to happen in that schema language:
<http://www.w3.org/TR/xmlschema-1/#Type_Derivation>

--

	Martin Honnen
	http://JavaScript.FAQTs.com/
.

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