Issue 7950: Interactions (uml2-rtf)
Source: The MathWorks (Mr. Alan Moore, alan.moore(at)mathworks.co.uk)
Nature: Uncategorized Issue
Severity: 
Summary: In the description of the Graphic Paths for a Communication Diagram I can
find no mention of what the lines between the Lifelines correspond to -
although I did find this in the description of Message: "On Communication
Diagrams, the Messages are decorated by a small arrow along the connector
close to the Message
name and sequence number in the direction of the Message." I assume this
means that the lines correspond to a Connector model element.


The Graphic Paths section should be updated to include this information and
justification added as to why a Connector is needed in order for Messages to
be shown between two lifelines on a Communication Diagram (this seems an
overly tight constraint to me).
Resolution: see above
Revised Text: Before (14.3.20 page 540):
On Communication Diagrams, the Messages are decorated by a small arrow along the
connector close to the Message name and sequence number in the direction of the
Message.
Revised text:
On Communication Diagrams, the Messages are decorated by a small arrow in the
direction of the Message close to the Message name and sequence number along the line
between the lifelines (See Table 17 and Figure 351).
Actions taken:
November 26, 2004: received issue
August 23, 2006: closed issue
Discussion: 
The line between two lifelines of a Communication Diagram is merely a placeholder for
the set of message identifiers (including sequence numbers) for messages between these
lifelines. Messages are also in sequence diagrams associated with connectors (optionally),
and there is no difference for Communication Diagrams.
On your resolution; I understand that this graphic path is not associated to a connector
but I found the use of the term "connector" in the description confusing and I think it
should be replaced. I also think that the graphic paths section for any diagram should
include all graphic paths, even if they don't represent abstract syntax elements.
End of Annotations:=====

m: "Moore, Alan" <alan.moore@ARTISANSW.com> 
To: issues@omg.org 
Subject: UML 2 Super (Interactions) 
Date: Fri, 26 Nov 2004 15:07:30 -0000 
X-Mailer: Internet Mail Service (5.5.2657.72) 


In the description of the Graphic Paths for a Communication Diagram I can
find no mention of what the lines between the Lifelines correspond to -
although I did find this in the description of Message: "On Communication
Diagrams, the Messages are decorated by a small arrow along the connector
close to the Message
name and sequence number in the direction of the Message." I assume this
means that the lines correspond to a Connector model element.


The Graphic Paths section should be updated to include this information and
justification added as to why a Connector is needed in order for Messages to
be shown between two lifelines on a Communication Diagram (this seems an
overly tight constraint to me).