Ecore diagram editor shows import icons on inheritance arrows

[dhendriks]

It looks something like this:

You can see the import icon on the inheritance arrow in the left diagram. To reproduce:

• Create a new 'Ecore Modeling Project'. Name it test. Accept defaults.
• Create a new 'Ecore Model' in the same model directory, naming it test2.
• Name the package in test2 also test2.
• Add a class diagram representation also for test2.
• Add a class named Class1 to test using the diagram editor.
• Add a class named Class2 to test2 using the diagram editor.
• Save both diagrams.
• Add each class to the other diagram, using the 'Add' tool from the 'Existing Elements' part of the palette.
• Add an inheritance relation from one class to another, in one of the diagrams, using the 'SuperType' tool.
• Note how in one of the diagram the inheritance arrow shows with an import icon.

I get the import icon on imported classes, and find it useful. But it just looks weird an confusing on the arrow, in my opinion. Especially if you have a tree of inheritance relations, like this example from a metamodel in the Eclipse ESCET project:

(originally reported at: eclipse-emf/org.eclipse.emf#12)

[pcdavid]

The corresponding decorator is defined to match any graphical element which represents a "remote" EClassifier.

Because the inheritance edges correspond to a raw reference (and not a reified EObject), it is associated to its source EClass, so matches the condition.

I'll have to check, but I think the preconditionExpression on the decorator definition has access to enough information to exclude edges.