[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Extract A Subset of a W3C XML Schema?
[Jeff Greif] > No, there is no trouble creating the instance document. You add a dummy > empty global element (child of the <schema> element) to the overall schema > being created: > <element name="dummy-to-be-excised" type="string"/> > and make your instance document contain just this element. (If the overall > schema contains such an element already, just use it.) > > When the validator reads this document, it must read the overall schema and > everything it imports and ensure they are self-consistent and valid (at > least xerces does), before looking at the instance. Thus the entire set of > constructs in the various schemas will be evaluated for completeness. > > So the procedure I described does not depend upon a complex instance > document. Except for validators that silently switch to lax validation. I have had an instance passed as valid when its root element was in the wrong namespace. Turns out the validator, not finding anything to validate because of the namespace, reported no errors! Cheers, Tom P
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