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   RE: More chaos coming down the pike

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  • From: <schen@falconwing.com>
  • To: Mike Spreitzer <spreitze@parc.xerox.com>
  • Date: Wed, 15 Sep 1999 14:58:25 -0400 (EWT)

Hi Mike, everyone,

On Mon, 13 Sep 1999, Mike Spreitzer wrote:

> Those two trains are proceding down their independent tracks.  Sun has
> approved the "XML Data Binding" JSR; for more info, see the Java
> Community Process web site at
> <http://java.sun.com/aboutJava/communityprocess/index.html>.  The OMG
> has issued the "XML/Value RFP"; for more information, see
> <http://www.omg.org/techprocess/meetings/schedule/XML_Value_RFP.html>.
> Neither explicitly requests coordination with the other.  The OMG folks
> say that doesn't prevent a responder from making a coordinated response.
> The recent barrage of mail about "the grove paradigm" make me even more
> worried about coherency.  I haven't actually studied it yet, but the
> mail makes me suspect "the grove paradigm" is a meta-model (or
> meta-meta-model).  The OMG has their own modelling architecture,
> centered around the MOF (Meta-Object Facility) and XMI (Xml Metadata
> Interchange).  If the XmlSchema->JavaType mapping is grounded in groves,
> and the XmlSchema->OmgIdl mapping is grounded in the MOF, getting
> coherency after the fact may involve some very deep problems.

Although I'm not an expert in the grove paradigm or in MOF, I don't think
that things are as bad as you may fear, since you can represent groves in
MOF too.  See the thread on the XSL mailing list about representing DTDs
in UML.

. . . Sean.

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