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Subject: RE: autogeneration of UML to XML
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Mike and
others, Finally
got around to finding this thread… What’s
really needed to complete the path (UML to DTD/Schema) in a standard way, is a
UML Profile for XML specification from the OMG, the owner of UML. It would
detail the rules and mapping from UML elements (class, association,
stereotypes, etc.) to DTD/Schema. Without that we are left with the sited
Rational document (http://www.rational.com/uml/resources/documentation/index.jsp) or some other “meta-model”.
Also understand that the technology surrounding OMG’s UML and XMI (IBM, Data
Access, Unisys) has solutions to auto generate DTDs of the UML model. This is
somewhat different than modeling a DTD in UML and autogenerating it. I can go
into more details on this if you like. In order
to autogenerate a DTD/Schema from a UML model I would need the actual UML model
not the PDF. If you could send it to me, I would be grateful. That doesn’t mean
I will be able to do it in short order since it most likely doesn’t follow the
Rational Document and my solution (skunk works) may not be robust enough to
handle it. However, I plan on taking on the challenge as time permits. I’ve cleared
the major hurdles so it shouldn’t be that bad, plus I have a flight to Paris
this Saturday, lots of uninterrupted time. The procedure is to first transform
the UML model into OMG XMI, then use XSLT on the XMI to generate a DTD. The
main drawback to this approach is that it is very compute and resource
intensive. I’m hoping Moore’s law will help me out here :). Also, my scripts
only generate DTDs, I haven’t done the work yet for Schemas. To satisfy
the “doubting Thomas” in you, I wish I could send you a simple example UML,
DTD, XSL scripts and instructions but I need to first clear it with Lucent’s intellectual
property unit, I’m working on it. So you will have to take my word on it for
now. I did attach the simple model, resultant DTD and helper scripts to give
you some level of proof. Just so you know, this exact methodology has been
provided to the OAGI for them to generate DTDs from their UML model of OAGI
BODs (they protect the intellectual property). Regards
and I look forward to working on your UML, ________________________________________________________________ Kurt Kanaskie Lucent Technologies kkanaskie@lucent.com (610)
778-1069 Note the new
number! -----Original
Message----- Ever
since William Kammerer said : "Heck, I haven't even yet seen anyone take a
UML data model and generate schemas from it - and that should be a lot
simpler" theres been a flood of e-mails from people such as Duane Nickull
of XML GLobal Technologies, Arofan Gregory of Commerceone, James Whittle
of e-centre, Philip goatly of Bolero, and Kris KETELS of Swift, have all
jumped into the thread to tell us that they currently have the capability to
"autogenerating from UML" XML schemas. Well I
for one am most impressed. However, I do have a grain of doubting Thomas, in my
vains. I made a UML class model of the core components, which I am led to
believe is a faithful rendering of the Excel spreadsheet. Just to
give me, and perhaps many others who are listening in, an idea of how the
autogeneration from UML works, would someone like to demonstrate their
capabilities on the enclosed core components model ? It might help settle a lot
of the dust that has been raised on the subject. Regards Mike
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