SainTiss wrote:
Hi all,
I was trying to get to a Classifier's package, which in the UML metamodel comes down
to navigating the namespace<->ownedElements association. However, calling
getNamespace() on a modelElement returns null, because of what looks like a bug to me:
in ModelElementFacadeLogicImpl, the shieldedElement is a UmlPackage (which is
fine, because it should be). The facade which is constructed, is thus a
UmlPackageFacade. However, then it is cast into a NamespaceFacade, which fails
because the MagicDraw UML Metamodel from which the facades are generated, does
not have a generalization relationship between namespaces and packages in any
way.
Why is there a deviation from the official UML metamodel here? Is this for
reasons of convenience?
In my opinion, one of two things should be done here:
- connect namespace and package via generalizations
- make sure the namespace<->ownedElements association is not navigable in the
direction of namespace
I found out that there is a getPackage() method on ModelElements which will fetch the package an element is in, but I feel that either getNamespace() should work too, or should be eliminated...
You're right: it looks like getNamespace() should be removed, I think it
was used at one point, but I don't think its being used anymore, I'll
take a closer look and remove it if that's the case...thanks for the
heads up.
Thanks,
Hans
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