Issue 9002: Section: Common Behavior (02) (uml2-rtf) Source: NIST (Mr. Conrad Bock, conrad.bock(at)nist.gov) Nature: Revision Severity: Minor Summary: The semantics of TimeEvent uses undefined term "active". State machines uses the term for states, not triggers. Need definition independent of state machines in any case. Resolution: Revised Text: Actions taken: September 25, 2005: received issue Discussion: The semantics of TimeEvent is not really given in terms of state machines, but either way, the semantics for relative time events is completely unclear. I am not even sure as of the intuition here: Apparently the intention is that a trigger is caused (the wording of section “Trigger”), but delayed from that point until the relative time interval expires. However, there is nothing in the semantics of Trigger which would allow for a trigger just to happen without an event. So maybe the intuition is that there are two events associated with such a trigger: a spontaneous event occurring when the behavior that is triggered is enabled and that would normally cause the trigger, and the delay asserted by the time event. Moreover, the notation section uses the term “time trigger” where this should be specifying time events. I propose to defer this until somebody can explain the intuition and semantics of a relative time event. Disposition: Deferred End of Annotations:===== m: webmaster@omg.org Date: 25 Sep 2005 10:33:25 -0400 To: Subject: Issue/Bug Report -------------------------------------------------------------------------------- Name: Conrad Bock Company: NIST mailFrom: conrad.bock@nist.gov Notification: No Specification: UML 2 Superstructure Section: Common Behavior FormalNumber: ptc/04-10-02 Version: RevisionDate: Page: Nature: Revision Severity: Minor HTTP User Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322) Description The semantics of TimeEvent uses undefined term "active". State machines uses the term for states, not triggers. Need definition independent of state machines in any case.