Fwd: Antworten: Re: [Andromda-devel] Framework for model transformations

Pieter Van Gorp Thu, 25 Mar 2004 09:14:13 -0800

Hi Matthias, indeed concepts like packaging, attributes, methods and inheritance are needed in transformation languages as well. A framework on top of JMI is very attractive for the reasons you mention.

For example the query module of the framework will be based on Java reflection, the JMI reflective interfaces and a query-by-example mechanism.

You make me very curious... Sorry, I'll have to spam you with a lot of questions right now :-)

I wonder how you specify consistency constraints across abstraction layers. Could you post a code fragment that states something like "for every Entity in the source metamodel, there always needs to be a Component in the target metamodel that shares the name and list of attributes"?

How do you attach observers (listeners) that are fired when the consistency constraint is violated and some transformation logic needs to recover the consistency?

How does your traceability API look like? I.e. how can I navigate from source to target (or vice versa) for model elements that have already been transformed?

Could you also explain your use of a "query-by-example" mechanism?

Sincerely,
Pieter Van Gorp
        FOrmal Techniques in Software engineering (FOTS)
        Lab On Re-Engineering (LORE)
        University of Antwerp
        Middelheimlaan 1
        2020 Antwerpen - Belgium
        Office G.304 (+32 3 265 38 71)
        http://win-www.uia.ac.be/u/fots/
        http://win-www.uia.ac.be/u/lore/
        http://www.pietervangorp.com/

On donderdag, maa 25, 2004, at 17:02 Europe/Brussels, Matthias Bartels wrote:

Hi Peter,

AFAIK the MTL approach uses its own language and OCL to do transformations. From my point of view this is not pragmatic enough (Well, it is compared to QVT).

I want to use a well known language that provides all advantages of OO programming, so why not use Java. We have a standard (JMI) that allows to abstract from repositories and metamodels. The usage of Java implies the possibility to build flexibel transformations that can be easily adapted or extended to your needs by derivation, the availability of powerful IDEs, that allow you to easily develop and debug your transformations and not less important a very large developer community that is already familiar with the language is out there. For example the query module of the framework will be based on Java reflection, the JMI reflective interfaces and a query-by-example mechanism. Above this layer convenience layers will exist that encapsulate complex metamodels(e.g. UML) and allow easy access to model elements.

I think Java as a well known OO language and the JMI spec. are a really good basis for a pragmatic approach to model transformations.
Best regards,
Matthias
-------
Urspr�ngliche
Nachricht -------
Von: Pieter Van Gorp
<[EMAIL PROTECTED]>
Datum: Thu, 25 Mar
2004 14:17:40 +0100
Betreff: Re:
[Andromda-devel]
Framework for model
transformations
Hi Matthias,
The framework I am
developing is based
on JMI, it is a
pragmatic
approach to model
transformations.
That means I
don't plan to
implement a solution
for OMGs QVT RFP.
Could you perhaps
outline the
difference in goals
and results between
your framework and
MTL
(http://modelware.inria.fr/)?
 AFAIK, MTL (in
contrast to ATL) is
also a pragmatic
framework approach
instead of a
QVT language
approach.
Best regards,
Pieter Van Gorp
 FOrmal Techniques
in Software
engineering (FOTS)
 Lab On
Re-Engineering
(LORE)
 University of
Antwerp
 Middelheimlaan 1
 2020 Antwerpen -
Belgium
 Office G.304 (+32 3
265 38 71)
 http://win-www.uia.ac.be/u/fots/
 http://win-www.uia.ac.be/u/lore/
 http://www.pietervangorp.com/
On donderdag, maa
25, 2004, at 10:09
Europe/Brussels,
Matthias Bartels
wrote:
Hi,

I am currently
developing a
framework that
allows model
transformations.
Because of the
existence of open
source
tools like
AndroMDA it would be
nonsense to develop
a complete MDA
framework on my
own. Are there any
plans to
integrate model
transformations into
AndroMDA? If so we
could maybe
join our forces.

The framework I am
developing is based
on JMI, it is a
pragmatic
approach to model
transformations.
That means I
don't plan to
implement a solution
for OMGs QVT RFP.
Due to the fact
that the framework
is based on JMI it
will be
useable with any
MOF based Metamodel
and any JMI based
metadata
repository
(currently Netbeans
MDR).
I'm going to
realize a working
prototype till the
middle of april.
Best regards,
Matthias
Lycos empfiehlt:
Erhalten Sie hier
eine kostenlose
Unfallversicherung
von Lycos f�r 12
Monate! Infos unter:

http://www.lycos.de/service/ace/landingpage/index.html

Sichern Sie sich Ihre Premium E-Mail-Adresse bei Lycos: eigene Domain, 500MB Mailspeicher, 25 free SMS, POP3, Weiterleitung und Hightech Spamschutz: http://mail.lycos.de


-------------------------------------------------------
This SF.Net email is sponsored by: IBM Linux Tutorials
Free Linux tutorial presented by Daniel Robbins, President and CEO of
GenToo technologies. Learn everything from fundamentals to system
administration.http://ads.osdn.com/?ad_id70&alloc_id638&op=click
_______________________________________________
Andromda-devel mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/andromda-devel

Fwd: Antworten: Re: [Andromda-devel] Framework for model transformations

Reply via email to