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Home » Modeling » Epsilon » Derived attributes - emphatic(How to automatically generate derived values)
Derived attributes - emphatic [message #1750644] Fri, 23 December 2016 17:01 Go to next message
bullet king is currently offline bullet kingFriend
Messages: 2
Registered: December 2016
Junior Member
Hi,

I am trying to create a metamodel using emphatic (.emf file) for schools infrastructure- rooms, desks etc. I want to create a 'derived id attr int roomId' for the rooms class. When creating a model which conforms to this metamodel, every time a new instance of the class room is created, I want the 'roomid' to be automatically populated by the next available id number. Is there a way to implement this in emphatic itself (in the metamodel .emf file), without changing the generated java code?

Thanks
Re: Derived attributes - emphatic [message #1750677 is a reply to message #1750644] Sat, 24 December 2016 20:48 Go to previous messageGo to next message
Dimitris Kolovos is currently offline Dimitris KolovosFriend
Messages: 1613
Registered: July 2009
Location: York, UK
Senior Member

Hi,

Emfatic doesn't support this I'm afraid. I'd recommend having a look at OCLInEcore [1] or Xcore [2] instead.

Cheers,
Dimitris

[1] http://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.ocl.doc%2Fhelp%2FOCLinEcore.html
[2] https://wiki.eclipse.org/Xcore
Re: Derived attributes - emphatic [message #1750696 is a reply to message #1750677] Sun, 25 December 2016 21:00 Go to previous message
bullet king is currently offline bullet kingFriend
Messages: 2
Registered: December 2016
Junior Member
thank you Smile will try those recommendations.
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