UML22 — first paragraph of section 7.8 UML kernel

The first paragraph of section 7.8 suggests that the UML kernel is the merge of Core::Abstractions packages. To obtain Classifier in the UML kernel, we would have to merge Classifiers, Super and Generalizations from Core::Abstractions. How is this possible given that: a) there are no generalization relationships among Classifier metaclasses in these Abstractions packages b) there are two matching operations:

::Classifier::parents (a) means that Generalizations::Classifier::parents cannot redefine Super::Classifier::parents. Even if there were a generalization, the resulting merged model would be ill-formed because it would include a generalization self-loop. (b) means that the merge is ill-formed because it violates constraint #4 defined in the general package merge rules in 11.9.3 (p. 164) POSSIBLE WORKAROUND: - split Core::Abstractions::Super in two packages: Super and SuperParents which only defines Classifier::parents - ditto for Core::Abstractions::Generalizations - if Super is to be merged but Generalizations isn't, then merge SuperParents as well. - if both Super and Generalizations are to be merged, then merge GeneralizationsParent but not SuperParents This is a kludge but that's the only short-term workaround I can find for this bug at this time.

This issue has already been resolved by, or no longer applies to, the UML 2.5 Beta 1 specification.
Disposition: Closed - No Change