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7/11/2002 5:30:57 PM, Elena Litani <elitani@ca.ibm.com> wrote:
>
>For validation against XML Schemas you can specify xsd files using the
>following properties [1]:
>http://apache.org/xml/properties/schema/external-schemaLocation
>http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation
>
More generally, the W3C XML Schema spec does not say how to associate an instance
with a schema, the schemaLocation property is just a "hint", so implementations
such as Xerces need to provide a programmatic way to do this.
This is a deliberate (and very appropriate!) choice, because an application
program may need to over-ride the "hint" in the instance, or the author of
the instance may not have provided a hint, or the instance may have to
be validated against more than one schema, etc. Some have suggested that
the namespace URI could (directly or indirectly) also provide a "hint" of
which schema to apply. I don't know if that is common in practice.
BTW, can anyone explain the RELAX NG philosophy of how one associates an
instance with a schema? [I have a DOM WG action item to check with the
RELAX NG folks about this, and this post just reminded me!!!]
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