[erlang-questions] ExecutableUML and Erlang

Tue Feb 21 18:44:39 CET 2012

Hi,

Many thanks to John, Kenneth and Ulf for your kind and precise answers.

We will investigate a bit about the limitations of this language and the 
potential ways of circumventing them (ex: increasing its expressivity or 
generating different Erlang code - if ever it looked both useful and 
easily feasible).

I personally agree that Erlang would be probably a more suitable language 
than xtUML, but as we have to target C++ as well, and as people who would 
have to use the pivot might prefer a language more familiar to them (like 
xtUML could be, rather than having to jump into the FP bandwagon), 
trade-offs will have to be found.

I also got in touch with Toni Siljamaki and other people involved in 
ExecutableUML, to have a better view of the current state of this language 
and corresponding tools. 

Thanks again!

Best regards,

Olivier Boudeville.
---------------------------
Olivier Boudeville

EDF R&D : 1, avenue du Général de Gaulle, 92140 Clamart, France
Département SINETICS, groupe ASICS (I2A), bureau B-226
Office : +33 1 47 65 59 58 / Mobile : +33 6 16 83 37 22 / Fax : +33 1 47 
65 27 13

john.hughes@REDACTED 
17/02/2012 11:53

A
olivier.boudeville@REDACTED, erlang-questions@REDACTED
cc

Objet
Re: [erlang-questions] ExecutableUML and Erlang

I've also looked at this. My conclusion was that it provides a nice 
graphical syntax for a particular domain, but has weak abilities to define 
additional abstractions on top. For example, just as in Erlang messages 
are delivered asynchronously to recipients. But if you want to define 
*synchronous* communication with a server on top of that, by including the 
Pid of the sender in the message and sending a reply back to that Pid, 
then you have a problem--because Pids are not first class in xtUML and 
cannot be sent in messages, because message destinations must be 
statically known and so your server must know all of its possible clients 
in advance, and because you cannot define new graphical syntax so as to 
use synchronous message sending with the same convenience as the 
asynchronous kind.

Not impressed.

John
----- Original Message ----- 
From: Olivier BOUDEVILLE 
To: erlang-questions@REDACTED 
Sent: Tuesday, February 14, 2012 4:31 PM
Subject: [erlang-questions] ExecutableUML and Erlang

Hi everyone, 

In echo to the older thread "UML or other modeling tools" (
http://erlang.2086793.n4.nabble.com/UML-or-other-modeling-tools-td3205732.html
), we happened to find an Ericsson presentation about ExecutableUML (
http://www.cse.chalmers.se/edu/year/2010/course/MDSD/Year2010/Lectures/ExecutableUML_for_MDA_EricssonAB.pdf
), which apparently was already able to generate Erlang code. 

This xtUML looks like a very interesting approach; in short we are 
contemplating to specify some domain-specific models that are involved in 
a discrete simulation, based on a proper high-level, formal, 
implementation-agnostic pivot format, targeting a few different simulation 
engines, one of which expecting models to be written in C++, another one 
expecting them in Erlang. So it looks like if our pivot format could be a 
flavour of xtUML (a special, constrained, case thereof). 

Is there any material (documentation and/or tool) that is publicly 
available, so that we could test this ExecutableUML-based approach? Any 
opinion in terms of completeness, applicability or maturity? 

Thanks in advance for any information! 

Best regards,

Olivier.
---------------------------
Olivier Boudeville

EDF R&D : 1, avenue du Général de Gaulle, 92140 Clamart, France
Département SINETICS, groupe ASICS (I2A), bureau B-226
Office : +33 1 47 65 59 58 / Mobile : +33 6 16 83 37 22 / Fax : +33 1 47 
65 27 13

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