Issue 14994: The containment between Activity and StructuredActivityNode has one end redefining and the other subsetting (uml2-rtf)
Source: Microsoft (Mr. Steve Cook, stcook(at)microsoft.com)
Nature: Uncategorized Issue
Severity: 
Summary: The containment between Activity and StructuredActivityNode has one end redefining (wrong) and the other subsetting (right). Because redefining and subsetting should be symmetric, this means that both ends are both redefining and subsetting.  This is clearly wrong, because it would mean that all nodes and groups are StructuredActivityNodes.  The {redefines activity, redefines inactivity} should be turned into subsetting.

Resolution: 
Revised Text: 
Actions taken:
January 20, 2010: received issue
Discussion: 

End of Annotations:=====

m: Steve Cook <Steve.Cook@microsoft.com>
To: "issues@omg.org" <issues@omg.org>
Subject: UML 2.  The containment between Activity and StructuredActivityNode
 has one end redefining and the other subsetting.
Thread-Topic: UML 2.  The containment between Activity and
 StructuredActivityNode has one end redefining and the other subsetting.
Thread-Index: AcqZ4KId+D/LGQJeRnCA92Z0OxU41Q==
Date: Wed, 20 Jan 2010 14:55:40 +0000
Accept-Language: en-GB, en-US
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 


The containment between Activity and StructuredActivityNode has one end redefining (wrong) and the other subsetting (right). Because redefining and subsetting should be symmetric, this means that both ends are both redefining and subsetting.  This is clearly wrong, because it would mean that all nodes and groups are StructuredActivityNodes.  The {redefines activity, redefines inactivity} should be turned into subsetting.