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Composing Transformations [message #79536] Fri, 18 April 2008 09:10 Go to next message
Eclipse UserFriend
Originally posted by: comouraf-lixo.yahoo.fr

Hi,

I'd like to break down a big transformation in smaller parts and somehow
connect them at will. I think I can do it with the "access" and "extends"
features described in the QVT spec. So, I'd like to know if these features
are already available in QVTo. Better yet, could anybody point me out any
documentation with the available features from QVTO (today, the only source
I can count on is OMG's QVT spec, which obliges me to grope around a little
bit when using QVTO)

Thanks,

César
[QVTO] Re: Composing Transformations [message #79646 is a reply to message #79536] Mon, 21 April 2008 10:21 Go to previous message
Radomil Dvorak is currently offline Radomil DvorakFriend
Messages: 249
Registered: July 2009
Senior Member
Hi César,

At the moment we do not have a full support of module reuse by 'access'
and 'extends'.
However, with QVTo you can import libraries and transformations which makes
things available to the importing module as if 'extends' was used, though
you would
not be able to override operations (this came from the originally
contributed old Borland QVT).

So, the explicit instantiation of transformations is not supported yet,
which
is neccessary for transformation composition.
We will try hard to sort these things out this milestone.

We fully support reuse facilities at mapping operation level:
disjuncts, merges, inherits.

As for the supported QVT feature list, it was not published yet and I will
have to do so
this week. For the time being, please do not hesitate to post a [QVTO]
question in
the newsgroup.

Regards,
/Radek


On Fri, 18 Apr 2008 11:10:04 +0200, kaiserlautern <comouraf-lixo@yahoo.fr>
wrote:

> Hi,
>
> I'd like to break down a big transformation in smaller parts and somehow
> connect them at will. I think I can do it with the "access" and
> "extends" features described in the QVT spec. So, I'd like to know if
> these features are already available in QVTo. Better yet, could anybody
> point me out any documentation with the available features from QVTO
> (today, the only source I can count on is OMG's QVT spec, which obliges
> me to grope around a little bit when using QVTO)
>
> Thanks,
>
> César



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