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The value of semanticAdapter [message #1017001]

Fri, 08 March 2013 14:32

Mary P.

Messages: 48
Registered: November 2012

Member

Hello.

When I create a new diagram with my GMF editor an instance of CreateDiagramViewOperation is created.
It has a property private final IAdaptable semanticAdapter;

Where is the value of semanticAdapter taken from? Can I change it somehow? What is this semanticAdapter?

Thanks

Best regards
Mary

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Re: The value of semanticAdapter [message #1017040 is a reply to message #1017001]

Fri, 08 March 2013 17:54

Thomas Beyer

Messages: 55
Registered: February 2013

Member

Hi Mary,

the semanticAdapter is an IAdaptable-Wrapper of your diagram's domain element (the root). The IAdaptable is built in order to be handled by the Eclipse Platform API.

If you check your generated

XXXDiagramEditorUtil.createDiagram(URI diagramURI, URI modelURI,IProgressMonitor progressMonitor)

you will find the declarations:

 XXX model = createInitialModel();

and

Diagram diagram = ViewService.createDiagram(model,XXXEditPart.MODEL_ID,XXXDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT);

The first call creates your diagrams domain element, the "model"-element you are looking for.
Follow the second call and you will find where this model is wrapped as an EObjectAdapter (the semanticAdapter).

Yes, you can modify the model. But, make sure not to replace the model by a different interface, as it would break your element-hierarchy.

Regards
Thomas

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