Issue 3376:  ClassifierRoles should be independent of specific underlying base Classifi (uml2-superstructure-ftf)
Source:  (, )
Nature: Revision
Severity: Significant
Summary:  ClassifierRoles should be independent of specific underlying base Classifiers. Otherwise, you can not specify OOram role models properly. You need "free" ClassifierRoles (=without base) if you want to span layers, for example. 

Collaboration Templates don't do the trick; templates serve a different purpose. 

Please contact me at riehle@acm.org if you want to know more. I have long worked on this topic.
Resolution: 
Revised Text: 
Actions taken:
February 26, 2000: received issue
March 9, 2005: closed issue
Discussion: 
Collaborations have been rewritten in UML 2.0, and as a consequence, this issue has
already been addressed. Roles in a collaboration now are not any more related to a base
classifier. Instead, they represent a set of properties that an instance must possess that
plays that role. These properties are described by the classifier typing that role. This
classifier can have as many or as little properties as needed, even none (which would
correspond to the “free” classifier requested).
End of Annotations:=====
Date: Sat, 26 Feb 2000 13:34:23 -0500 (EST)
Message-Id: <200002261834.NAA22230@emerald.omg.org>
From: riehle@acm.org
To: juergen@omg.org, web-incoming@omg.org
Subject: Issue Report
Content-Type: text
X-UIDL: 5LXd9Y)\!!&VLe9fbPe9

Name: Dirk Riehle
Company: 
mailFrom: riehle@acm.org
Notification: Yes
Specification: UML V1.3
Section: 2.0
Formal #: 
Version: 
Revision_Date: June 1999
Page: 
Nature: Revision
Severity: Significant
full_desc: ClassifierRoles should be independent of specific
underlying base Classifiers. Otherwise, you can not specify OOram role
models properly. You need "free" ClassifierRoles (=without base) if
you want to span layers, for example. 

Collaboration Templates don't do the trick; templates serve a
different purpose. 

Please contact me at riehle@acm.org if you want to know more. I have
long worked on this topic.
submit: Submit Issue Report



Discussion:
Collaborations have been rewritten in UML 2.0, and as a consequence, this issue has already been addressed. Roles in a collaboration now are not any more related to a base classifier. Instead, they represent a set of properties that an instance must possess that plays that role. These properties are described by the classifier typing that role. This classifier can have as many or as little properties as needed, even none (which would correspond to the "free" classifier requested).
Disposition:	Closed, no change