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[QVTo] ECore to QVT meta-model syntax? [message #525154]

Mon, 05 April 2010 18:53

PBarendrecht

Messages: 36
Registered: November 2009
Location: Eindhoven, Netherlands

Member

Hi all,

I wondered whether it is possible to convert an ECore file (a meta-model) to QVT code, like the code used when using in-line meta-models.
This syntax uses keywords like composes, references and opposites, however I don't understand these keywords very well (I read the OMG QVT Specs [8.4.6], but it is not that clear).

If I could better understand this QVT meta-model syntax, I would be able to define more complicated intermediate classes.

Thanks!

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Re: [QVTo] ECore to QVT meta-model syntax? [message #525626 is a reply to message #525154]

Wed, 07 April 2010 09:06

Sergey Boyko

Messages: 171
Registered: July 2009

Senior Member

Hi PBarendrecht ,

Comments are in-lined below.

Regards,
Sergey

PBarendrecht wrote:
> Hi all,
>
> I wondered whether it is possible to convert an ECore file (a
> meta-model) to QVT code, like the code used when using in-line
> meta-models.

There's no such automatic conversion available.
In fact QVTo supports only intermediate properties and intermediate
classes. Locally defined metamodels are not supported.

> This syntax uses keywords like composes, references and
> opposites, however I don't understand these keywords very well (I read
> the OMG QVT Specs [8.4.6], but it is not that clear).

You can find some samples on defining intermediate properties and
classes in our test plug-in: org.eclipse.m2m.tests.qvt.oml (greep *.qvto
files with 'intermediate' inside).

>
> If I could better understand this QVT meta-model syntax, I would be able
> to define more complicated intermediate classes.
>
> Thanks!

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