UML22 — Section 9.3.3

The Collaboration example on page 159 appears to be a CollaborationOccurrence rather than a Collaboration. I recommend that the Collaboration example be revised to a description of the Observer pattern (or some other collaboration) and the example be continued in the CollaborationOccurrence section. In addition to fixing the example, I believe it is important to make the Collaboration and CollaborationOccurrence examples cohesive

Original discussion:
The submitter is incorrect in believing that the example (Figures 104 and 105) represent a collaboration occurrence. They are indeed collaborations. However, the submitter makes a good point on having a single example between the collaboration and the collaboration occurrence section. To this effect, it would be possible to update this example by replacing Figures 104 and 105 by an updated version of the example in Figure 107 (albeit one would have to add types to the parts in that example) and make it a little more interesting. The current example in Figures 104 and 105 was adapted from UML 1.4.
New comments (March 2009):
This issue dates back to 2003. I propose we close it on the grounds of cost/benefit.

Revised Text:
None.

Disposition: Closed, no change.