* Re: Shlaer-Mellor OOA/RD with Ada [not found] <3iat22$pl6@butch.lmsc.lockheed.com> @ 1995-02-28 13:18 ` Doc Elliott 1995-03-04 18:50 ` RalphH9 0 siblings, 1 reply; 3+ messages in thread From: Doc Elliott @ 1995-02-28 13:18 UTC (permalink / raw) In article <3iat22$pl6@butch.lmsc.lockheed.com>, brockwel@zuni.litc.lockheed.com says... > >Are there any subsribers who have experience using >Shlaer-Mellor OOA/RD to develop real-time Ada >applications? > >Specifically, has anyone automated the architecture >design / mapping rule definition process? > >Please email me if you have any information or advice to >offer a newcomer to Shlaer-Mellor for Ada applications. > >brockwel@lightning.hunts.lmsc.lockheed.com > >(205) 722-4080 (phone) >. > We did a study comparing all of the OOD methods available at the time (~92?) and looked at tool support, mapping into Ada, availability of training etc etc. I can probably get you a report released through our security weenies, but the bottom line was Shlaer - Mellor sucked for real time systems. It has very little capability for defining system boundaries - the subtitle of their book was "Modelling the world" and that's kinda what you end up doing, rather than modelling your problem and solution space. SM is a data flow oriented model, it depends on what appears to be enhanced data flow diagrams for almost all of its database. This is not very good for interrupt driven systems which must be deterministic. Also, the tools available to support it required use of some additional methods (such as Harel statecharts) to allow any simulation of the system model. Let me know directly if you want me to get the report released to you - it may take a while, and the info is probably somehwat out of date, especially the tool support part. -- Doc Elliott KE4KUZ Internet: helliott@losat.redstone.army.mil packet: ke4kuz@k4ry.#cenal.al.usa.noam The opinions expressed herein are mine, and do not reflect those of my employer or anyone else unless specifically stated as such. ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Shlaer-Mellor OOA/RD with Ada 1995-02-28 13:18 ` Shlaer-Mellor OOA/RD with Ada Doc Elliott @ 1995-03-04 18:50 ` RalphH9 1995-03-05 11:06 ` David Weller 0 siblings, 1 reply; 3+ messages in thread From: RalphH9 @ 1995-03-04 18:50 UTC (permalink / raw) The state of useage and support for Shlaer-Mellor has advanced dramatically over the past 2 years, so the report on in '92 may be a little dated. Several things have changed. First, new tools have been introduced by my company, Objective Spectrum, call the BridgePoint family of products. BridgePoint was built by a group hlaer-Mellor practitioners frustrated with available tool support. The result is a tool set the defines Shlaer-Mellor automation. Briefly, BridgePoint Analyst supports OOA, per Shlaer-Mellor, with SM notation and preventative data checking. Users say it helps teach the method. BridgePoint Sim allows early validation of model behavior through interactive simulation. BridgePoint Gen is a general purpose translation engine that supports any target implementation architecture/language, including ADA, through user defined templates. Second, organizations are starting to automate their design architectures with BridgePoint allowing for the power of regenerative software systems to be realized. Our customers are realizing 87% to 98% code generation (and regeneration) with their custom built architectures. The result is faster design changes in software products, as well as reuseable design architectures. Only now, has the power the Shlaer-Mellor methodology been realizable. Third, commercial architecture builders are starting enter the marketplace. We know of one currently offering custom architecture building, and we are working to create other architecture builders. We also expect to see "packaged" architectures be available on the BridgePoint platform by year's end. These three changes are changing the attitude towards Shlaer-Mellor. Users who are employing the method and BridgePoint automation are realizing REAL results. If anybody is interested in learning more they can contact me directly. Ralph Hibbs Objective Spectrum 901 Kildaire Farm Road Cary, NC 27511 voice: 919-460-1500 fax: 919-380-6463 email1: ralphH9@aol.com email2: ralph.hibbs@objective.com ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Shlaer-Mellor OOA/RD with Ada 1995-03-04 18:50 ` RalphH9 @ 1995-03-05 11:06 ` David Weller 0 siblings, 0 replies; 3+ messages in thread From: David Weller @ 1995-03-05 11:06 UTC (permalink / raw) In article <3jacpi$46a@newsbf02.news.aol.com>, RalphH9 <ralphh9@aol.com> wrote: >interactive simulation. BridgePoint Gen is a general purpose translation >engine that supports any target implementation architecture/language, >including ADA, through user defined templates. > ^^^ *Sigh* _Another_ marketing bot, hopelessly out of touch. Another company to put on my "Don't bother" list. (That's a cheap excuse anyway, I despise the Schlaer-Mellor method :-) -- Frustrated with C, C++, Pascal, Fortran? Ada95 _might_ be for you! For all sorts of interesting Ada95 tidbits, run the command: "finger dweller@starbase.neosoft.com | more" (or e-mail with "finger" as subj.) ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~1995-03-05 11:06 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- [not found] <3iat22$pl6@butch.lmsc.lockheed.com> 1995-02-28 13:18 ` Shlaer-Mellor OOA/RD with Ada Doc Elliott 1995-03-04 18:50 ` RalphH9 1995-03-05 11:06 ` David Weller
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