[Modules] Images vs. module safety

joseph pelrine jpelrine at balcab.ch
Tue Aug 21 06:00:05 UTC 2001


I just looked at an old Team image, and this is correct.

-- Joseph Pelrine

----- Original Message -----
From: Allen Wirfs-Brock <Allen_Wirfs-Brock at Instantiations.com>
Date: Tuesday, August 21, 2001 0:12 am
Subject: Re: [Modules] Images vs. module safety

> At 01:56 PM 8/17/2001 -0700, Paul McDonough wrote:
> >The only real flaw we've noticed in this approach so
> >far is the requirement it imposes on each tool to
> >signal the appropriate events; in the case of the
> >standard Squeak release, this required minor "touches"
> >on about 20 methods, viz., those methods which are
> >invoked when code's saved.  This is relatively
> >painless, and in any case invisible to the intrepid
> >Squeaker, BUT it will give nasty surprises when
> >tools/browsers/etc. which have not been "touched"
> >enter into the system.
> 
> My recollection (Juanita is probably the authority in this area) 
> is that 
> the way we handled this in Team/V was by hijacking the existing 
> base 
> methods used for adding classes, methods, and such and making them 
> delegate 
> to a pluggable manager object.  If Team/V was installed, the 
> manager 
> converted the operations into the equivalent Team/V api requests.  
> Without 
> Team/V or in a deployment the manager just turned around and did 
> the usual 
> old stuff.
> 
> Allen
> 
> 





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