Target Namespaces & Unqualified Locals (Section 3.1 of the primer)

Hey everbody.

I am designing a multi-schema application in which each schema must have its own target namespace. The attributes "attributeFormDefault" and "elementFormDefault" are left to their default, i.e. "unqualified" which means that only global elements have to be prefixed. The corresponding example in the primer is:

<?xml version="1.0"?>
<apo:purchaseOrder xmlns:apo="http://www.example.com/PO1"
                   orderDate="1999-10-20">
    <shipTo country="US">
        <name>Alice Smith</name>
        <street>123 Maple Street</street>
        <!-- etc. -->
    </shipTo>
    <billTo country="US">
        <name>Robert Smith</name>
        <street>8 Oak Avenue</street>
        <!-- etc. -->
    </billTo>

    <apo:comment>Hurry, my lawn is going wild!</apo:comment>    <=== unnecessary prefix

    <!-- etc. -->
</apo:purchaseOrder>

In this example the root element <apo:purchaseOrder> and the nested element <apo:comment> are prefixed, because they both correspond to globally defined elements.
However the <apo:comment> element also corresponds to a locally declared element declaration (that in turn refers to a global declaration).

Therefore the prefix in the comment element can (and should) be dropped without loosing any information. This would allow instance document writers to be sure that they
must NEVER use prefixes except for the root element! This would make life much easier!

Thanks for your attention,

Stefan Wachter





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Received on Wednesday, 4 April 2001 10:50:34 UTC