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Re: XML Schema WG comments on Data Model

From: Norman Walsh <Norman.Walsh@Sun.COM>
Date: Fri, 04 Jun 2004 13:56:54 -0400
To: "C. M. Sperberg-McQueen" <cmsmcq@acm.org>
Cc: public-qt-comments@w3.org, W3C XML Schema IG <w3c-xml-schema-ig@w3.org>
Message-id: <877jun436h.fsf@nwalsh.com>
/ "C. M. Sperberg-McQueen" <cmsmcq@acm.org> was heard to say:
| 1.4. The implications of [validity] != valid
|     Section 3.6 para 2 reads in part: "The only information that can be
|     inferred from an invalid or not known validity value is that the
|     information item is well-formed."
|     This is not true in the general case: the values of the properties
|     [validity] and [validation attempted] interact, so that some
|     inferences beyond well-formedness can be made. (If [validity] is
|     'notKnown', for example, we can infer without examining the PSVI that
|     [validation attempted] is not 'full'. If for some node N [validity] is
|     'invalid', we can infer that declarations are available for at least
|     some element or attribute information items in the subtree rooted in
|     N.) The data model doesn't have to be interested in those inferences,
|     but it is simply incorrect to say that they don't exist.
|     On the whole, we believe that that the data model misses an
|     opportunity by failing to exploit the information contained in the
|     [validity] and [validation attempted] properties more fully.

The offending text "The only information ... is well-formed" has been
redrafted in the following way in response to your comment. Please let
us know if this is satisfactory.

  In the data model, precise schema type information is exposed for
  Element and Attribute Nodes that are
  <quote><emph>valid</emph></quote>. Nodes that are not
  <quote><emph>valid</emph></quote> are treated as if they were simply
  well-formed XML and only very general schema type information is
  associated with them.

                                        Be seeing you,

Norman.Walsh@Sun.COM / XML Standards Architect / Sun Microsystems, Inc.
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Received on Friday, 4 June 2004 14:08:43 UTC

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