| gmf discussion [message #496592] |
Tue, 10 November 2009 16:21 |
 Hauke Fuhrmann
Messages: 333
Registered: July 2009 |
Senior Member |
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From: Hauke Fuhrmann <haf@informatik.uni-kiel.de>
Newsgroups: eclipse.modeling.gmf
Subject: Alternative types of top node elements
Date: Thu, 29 May 2008 11:33:08 +0200
Organization: EclipseCorner
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Xref: build.eclipse.org eclipse.modeling.gmf:13126
Hi there,
I want to do something very simple:
I have two objects in my domain model: A State and a CompartmentState,
where the CompartmentState extends the State. Now the CompartmentState
aggregates States in a "myStates" relation, hence it can contain States
and CompartmentStates recursively, modeling hierarchy.
The diagram extends CompartmentState, hence it can contain both types.
How do I set this up correctly in the mapping?
1. I cannot create two TopNodeReference for both State and
CompositeState, because I have only one aggregation "myStates". Hence I
get an error message if I choose the same Containment Feature:
"Phantom nodes that are not targeted by a link mapping exist".
2. I cannot create a single TopNodeReference to State (which gets
extended by CompartmentState), because only the latter has a Child
Reference to "myStates".
3. Next try would be to create a second aggregation from
CompartmentState to CompartmentState recursively to get two distinct
aggregations, but this is not exactly what I want...
How to do it?
Cheers,
Hauke
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