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Bug 320318

Summary:	Incorrect use of EMF bidirectional references in UML metamodel
Product:	[Modeling] MDT.UML2	Reporter:	Volker Stolz <stolz+bugzilla>
Component:	Core	Assignee:	UML2 Inbox <mdt-uml2-inbox>
Status:	CLOSED FIXED	QA Contact:
Severity:	major
Priority:	P3	CC:	Kenn.Hussey, michlz
Version:	unspecified	Keywords:	helpwanted
Target Milestone:	SR1	Flags:	Kenn.Hussey: indigo+
Hardware:	All
OS:	All
Whiteboard:

Description Volker Stolz

2010-07-19 16:01:40 EDT

Build Identifier: 20100617-1415

(Summarizing thread from <vs-25A30F.14514313072010@news.eclipse.org>)

With Eclipse Helios, UML Validation, e.g. in the example UML Editor, fails for certain model fragments with e.g. "The opposite features 'owner' of '<Trigger> s' and 'ownedElement' of 
'<Transition> k' do not refer to each other" or similar. Apart from owner/ownedElement, it at least also fails for namespace/ownedMember, e.g. for an InterfaceRealization in a Component.



Reproducible: Always

Steps to Reproduce:
1. Use the UML Editor to create a new UML model (or do so programmatically):
   + Model
     + Component
       + Interface Realization
2. Run UML Editor -> Validate
3. Observe validation error regarding opposite features namespace/ownedMember.

Comment 1 Kenn Hussey

2010-08-19 14:55:28 EDT

As discussed in the newsgroup, we assume (and have for years) the implicit container of an element is its owner, and the implicit container of a named element is also its namespace (if it's a kind of Namespace). In order to satisfy this new constraint, we'd either need to stop making this assumption and add a bunch of new subsets constraints to the metamodel to make it explicit, or else (perhaps more realistically) bypass the constraint for UML models.

The "fix" (latter option above) has been committed to both the HEAD and R3_1_maintenance streams.

Comment 2 Kenn Hussey

2010-08-31 12:11:43 EDT

The fix is available builds at http://www.eclipse.org/modeling/mdt/downloads/?showAll=1&hlbuild=I201008301532&project=uml2#I201008301532 (3.2.0) and http://www.eclipse.org/modeling/mdt/downloads/?showAll=1&hlbuild=M201008301351&project=uml2#M201008301351 (3.1.1).

Comment 3 Volker Stolz

2010-09-25 06:01:45 EDT

Hi Kenn, I'm looking at Helios SR1 with UML2 3.1.1, and I'm still seeing:

The opposite features 'feature' of 'org.eclipse.uml2.uml.internal.impl.InterfaceImpl@3aff8399{platform:/resource/examples/CoCoME/cocome/CoCoME.uml#_MAPtEItuEd29vaKB72n5RA}' and 'featuringClassifier' of 'org.eclipse.uml2.uml.internal.impl.OperationImpl@7852fda6{platform:/resource/examples/CoCoME/cocome/CoCoME.uml#_MAPtGotuEd29vaKB72n5RA}' do not refer to each other

Maybe there are other instances of this bug left? (And apologies for not being in a position to have tested the RCs.)

Cheers,
   Volker

Comment 4 Kenn Hussey

2010-09-27 10:15:24 EDT

(In reply to comment #3)
> Maybe there are other instances of this bug left? (And apologies for not being
> in a position to have tested the RCs.)

Yes, it appears that other occurrences of the problem still exist. :(

Perhaps you could open a new issue for which we could provide a more comprehensive solution in UML2 3.2?

Comment 5 Kenn Hussey

2011-05-31 10:36:44 EDT

Closing for Indigo release.