Just to note that this is also described in Chapter 28 (Patterns and
Frameworks) of "The Unified Modeling Language User Guide"
(Booch/Rumbaugh/Jacobson).
/Charles
| -----Original Message-----
| From: Knoernschild, Kirk [mailto:[EMAIL PROTECTED]]
| Sent: Thursday, December 07, 2000 16:38
| To: [EMAIL PROTECTED]
| Subject: RE: (ROSE) singleton
|
|
|
| BTW, the dashed oval is a collaboration. The intent is to provide a
| mechanism to easily represent a society of elements that
| work together to
| provide some set of behavior...
|
| Kirk Knoernschild
| Senior Consultant
| TeamSoft, Inc.
| www.teamsoftinc.com
| Consulting, Training, & Mentoring
| **-----------------------------------------------------------
| ---------------
| ----------------
| * The opinions expressed here do not necessarily reflect those
| * of TeamSoft, Inc., nor Kraft Foods.
| **-----------------------------------------------------------
| ---------------
| ----------------
|
|
| > -----Original Message-----
| > From: Yakov, Debby [SMTP:[EMAIL PROTECTED]]
| > Sent: Thursday, December 07, 2000 1:07 PM
| > To: 'Williamson, Rusty'; [EMAIL PROTECTED]
| > Subject: RE: (ROSE) singleton
| >
| >
| > Charles Richter discusses design patterns in chapter 9 of his book
| > "Designing Flexible Object-Oriented Systems with UML". He
| states that UML
| > provides syntax to document the application of a pattern
| and provides
| > several figures that show how this is done. Briefly, in a
| class diagram,
| > the
| > name of the pattern appears in a dashed oval, with
| dependencies extending
| > from it to the classes that participate in the pattern. Where the
| > dependency
| > intersects with the class, a label appears describing the
| role that class
| > plays in the pattern.
| >
| > -----Original Message-----
| > From: Williamson, Rusty [mailto:[EMAIL PROTECTED]]
| > Sent: Thursday, December 07, 2000 12:23 PM
| > To: [EMAIL PROTECTED]
| > Subject: RE: (ROSE) singleton
| >
| >
| >
| > Hello,
| >
| > Somewhere I saw a method for indicating design patterns in
| UML -- they
| > used
| > comment boxes with a black background and white lettering
| (and in Rose you
| > could create a link to a class diagram that isolates the
| pattern when you
| > feel that is needed for understanding). Anyway, I don't
| remember where I
| > saw this and apparently it is not a standard -- so far I
| can not find a
| > standard. Has anyone else see this method? If so where?
| I've gone out
| > on
| > a limb and written this into the first draft of our
| modeling guidelines
| > but
| > find a clear direction that the industry is taking.
| >
| > Yes, I've used stereotypes for patterns but as was pointed
| out, you only
| > get
| > one stereotype and so you can run into conflicts... also
| must patterns are
| > made up of many classes and these classes can have
| stereotypes of the
| > parts
| > that they play in the pattern (i.e. in the MVC you see
| stereotypes used
| > such
| > as model, view, controller, observer).
| >
| > Has Rational done anything official? How about the
| pattern community?
| >
| > Thanks!
| > Rusty
| > ------------------------------------------------------------
| > Rusty Williamson
| > > Sr. Systems Architect
| > GERS Retail Systems
| > http://www.gers.com/
| > The Object Workshop
| > http://home.san.rr.com/williamson/
| > Home Page
| > http://www.znet.com/~rusty/
| > ------------------------------------------------------------
| >
| >
| >
| >
| > -----Original Message-----
| > From: [EMAIL PROTECTED]
| [mailto:[EMAIL PROTECTED]]
| > Sent: Thursday, December 07, 2000 8:15 AM
| > To: [EMAIL PROTECTED]
| > Subject: RE: (ROSE) singleton
| >
| >
| >
| >
| > I have a question which relates to representation of a
| Singleton class in
| > UML.
| >
| > When a singleton class REed into Rose, it shows up with a
| unidirectional
| > reflexive association. Rose does this because it finds a
| STATIC object of
| > this class as a member varaible. To my way of thinking
| (correct me if I am
| > wrong), reflexive association for a class means that TWO
| objects of this
| > class are rquired to communicate. But for a singleton
| class ONE and ONLY
| > ONE object can exist.
| >
| > Is this a correct representation of a singleton class? Any
| comments or
| > thoughts are appreciated.
| >
| > Manoj Chopra
| >
| >
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