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Separate view model and business model [message #987805]

Wed, 28 November 2012 09:02

Trung Tran Vinh

Messages: 1
Registered: November 2012

Junior Member

Hi,

I am doing a project with GEF and EMF.
How to split the model into business data model and graphical data model?
Are there any exist example how to do it?

Thanks

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Re: Separate view model and business model [message #988944 is a reply to message #987805]

Mon, 03 December 2012 22:38

Eyal Heinemann

Messages: 7
Registered: October 2012

Junior Member

Hi,

Don't have an existing example for you, due to the fact that I'm a newbie to this entire world of GEF\EMF\Eclipse infras...
But I can tell you it's very much possible though not the easiest thing to do, I'll share my process hopefully will help you.
I started out with having a semi-working GEF editor and an EMF model that was specific for the GEF view. I changed the model to the meet the Business/Real Life/Spoken model.
At that point of course nothing worked; so after a few failed attempts I went on and built another abstraction layer of my own, that meets the following:
1. Built and translated from/to the model language (and it has the knowledge into how)
2. The objects together build the "GEF-model"
3. Main repository of all working objects in a session (not a must but makes life easier)

following this most, but not all, of the GEF code was left unchanged, kept working, and thought to be working with the direct model.

hope this helps.
good luck,
Eyal

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