From: Martin Dowie <martin@dowie-cs.demon.co.uk>
Subject: Re: Is Apex dead as an environment for Ada & Java?
Date: 1999/11/30
Date: 1999-11-30T00:00:00+00:00 [thread overview]
Message-ID: <384435B4.22876942@dowie-cs.demon.co.uk> (raw)
In-Reply-To: 0a0133f8.3baf10c0@usw-ex0101-001.remarq.com
jim_snead wrote:
> In article <384127A5.61431A14@dowie-cs.demon.co.uk>, Martin Dowie
> <martin@dowie-cs.demon.co.uk> wrote:
> > common approach is to have a subsystem per piece of hardware your
> > software
> > monitors/controls (thread?/process?/task?), other subsystems to
>
> Here is an essential problem with Rational
> subsystems. Say you do have a software
> subsystem for each one of your hardware items.
> Let us call them Gamma and Omega.
>
> So the Gamma subsystem implementors create a
> couple of packages called "Logging" and "Debug".
> These are not meant to be used outside of the
> Gamma subsystem so they are not made visible
> to the outside world via whatever mechanism
> Apex uses.
>
> Now say that the Omega subsystem has their
> own internal packages called "Logging" and "Debug".
> The Omega team goes ahead and develops these as
> well, oblivious to the rest of the world.
>
> Now the subsystem that you propose to integrate
> these other subsystems comes along and tries
> to link Omaga and Gamma into a single exec.
> Of course, this won't work because of name clashes
> between the hidden packages. Time to use another
> approach!
>
couldn't happen in our world - we design first then code and our code matches
the names used in the design.
also - and this is a common approach NOT just applicable to using Apex - we
prefix application objects with the equipment name, so we would have Omega_Debug
and Gamma_Debug packages.
next prev parent reply other threads:[~1999-11-30 0:00 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-11-26 0:00 Is Apex dead as an environment for Ada & Java? jim_snead
1999-11-28 0:00 ` Martin Dowie
1999-11-28 0:00 ` jim_snead
1999-11-28 0:00 ` mike_zebrowski
1999-11-28 0:00 ` jim_snead
1999-11-29 0:00 ` reason67
1999-11-29 0:00 ` jim_snead
1999-11-30 0:00 ` reason67
1999-11-30 0:00 ` jim_snead
1999-11-30 0:00 ` Martin Dowie
1999-11-29 0:00 ` Samuel T. Harris
1999-11-29 0:00 ` jim_snead
1999-11-29 0:00 ` John Duncan
1999-11-30 0:00 ` reason67
1999-12-01 0:00 ` Robert Dewar
1999-11-30 0:00 ` John Duncan
1999-11-30 0:00 ` Martin Dowie
1999-11-30 0:00 ` Samuel T. Harris
1999-12-01 0:00 ` Aidan Skinner
1999-12-02 0:00 ` Robert Dewar
1999-12-03 0:00 ` Simon Wright
1999-12-03 0:00 ` David C. Hoos, Sr.
1999-11-30 0:00 ` Martin Dowie
1999-11-29 0:00 ` jim_snead
1999-11-30 0:00 ` Samuel T. Harris
1999-11-30 0:00 ` jim_snead
1999-12-01 0:00 ` Samuel T. Harris
1999-11-30 0:00 ` Martin Dowie [this message]
1999-11-30 0:00 ` jim_snead
1999-12-01 0:00 ` Robert Dewar
1999-12-01 0:00 ` Martin Dowie
1999-12-01 0:00 ` jim_snead
1999-12-02 0:00 ` Robert Dewar
1999-12-02 0:00 ` Ted Dennison
1999-12-02 0:00 ` Larry Kilgallen
1999-12-09 0:00 ` Mark Hertel
1999-12-11 0:00 ` Robert Dewar
1999-12-11 0:00 ` Richard D Riehle
1999-12-11 0:00 ` Marin D. Condic
1999-12-11 0:00 ` Marin D. Condic
1999-12-11 0:00 ` Marin D. Condic
1999-12-11 0:00 ` Marin D. Condic
1999-11-30 0:00 ` Simon Wright
1999-11-30 0:00 ` jim_snead
1999-11-30 0:00 ` Tucker Taft
1999-11-30 0:00 ` jim_snead
1999-12-01 0:00 ` Larry Kilgallen
1999-12-01 0:00 ` Andreas Winckler
1999-12-01 0:00 ` jim_snead
1999-12-02 0:00 ` Samuel T. Harris
1999-12-02 0:00 ` jim_snead
1999-12-06 0:00 ` Samuel T. Harris
1999-12-18 0:00 ` Steven Hovater
1999-12-02 0:00 ` Andreas Winckler
1999-12-01 0:00 ` David W. Glessner
-- strict thread matches above, loose matches on Subject: below --
1999-11-26 0:00 Tom_Hargraves
[not found] ` <01bf3857$22ca59a0$022a6282@dieppe>
1999-11-26 0:00 ` Ed Falis
[not found] ` <01bf38cc$04d205e0$022a6282@dieppe>
1999-11-27 0:00 ` jim_snead
1999-12-18 0:00 ` Steven Hovater
1999-11-26 0:00 ` jim_snead
1999-11-26 0:00 ` Steven Hovater
1999-11-26 0:00 ` jim_snead
1999-12-09 0:00 ` Wes Groleau
1999-12-12 0:00 ` jim_snead
1999-11-27 0:00 ` Robert Dewar
1999-12-09 0:00 ` Henrik Delin
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