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Executing a one-time rule [message #54668]

Wed, 25 July 2007 15:42

Eclipse User

Originally posted by: leonardobsjr.yahoo.com.br

Hello Everyone,
I'm in a need of a way to use a one-time rule to work with a set of
objects. Giving some details, i have a bag of instantiated objects from a
class A. I want to get all those objects and make them atrributes of a
class B with a one-time rule that get all those objects and return a
single B class. I know i can't do it with a declarative rule because when
it matches always return something.
I don't know if i explained it well, but that's it.

Thanks,
Sorry about the bad english (wrote in a hurry),
Leonardo Jr.

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Re: Executing a one-time rule [message #54743 is a reply to message #54668]

Wed, 25 July 2007 16:29

William Piers

Messages: 301
Registered: July 2009

Senior Member

Leonardo Jr. a écrit :
> Hello Everyone,
> I'm in a need of a way to use a one-time rule to work with a set of
> objects. Giving some details, i have a bag of instantiated objects from
> a class A. I want to get all those objects and make them atrributes of a
> class B with a one-time rule that get all those objects and return a
> single B class. I know i can't do it with a declarative rule because
> when it matches always return something. I don't know if i explained it
> well, but that's it.
>
> Thanks, Sorry about the bad english (wrote in a hurry),
> Leonardo Jr.
>
>
I think lazy rules could help you, take look at this section in ATL wiki :
http://wiki.eclipse.org/ATL_Language_Troubleshooter

Regards,

--
William Piers
MDA Consultant, Obeo (http://www.obeo.fr)

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