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Re: Re[4]: GDL2 on MacOS X

From: Stéphane Corthésy
Subject: Re: Re[4]: GDL2 on MacOS X
Date: Sat, 30 Nov 2002 17:58:40 +0100

On Thursday, November 21, 2002, at 04:21 PM, Manuel Guesdon wrote:

On Thu, 21 Nov 2002 12:33:42 +0100 Stéphane Corthésy <address@hidden> wrote:
| On Thursday, Nov 21, 2002, at 12:06 Europe/Zurich, Manuel Guesdon wrote:
| >
| > I don't see how GDL2 could avoid garbage colection or similar
| > mechanism.
| >  See
| >      (Resolving cycles within your model. A garbage collector)
| NeXT solved the problem, didn't they?
| If you have an EOObject registered in an EOEditingContext, it may/will
| have retain-cycles, due to relationships between EOs, and when you
| unregister the object from the EC (when the EC is itself dealloc'ed, or | the object is refaulted), then the object shall clear its EOProperties,
| i.e. all EORelationships of the object shall be set to nil, thus
| breaking retain-cycles. See -[NSObject(EOClassDescription)
| clearProperties]. Wouldn't it be enough?

There's also EOModel, EOEntities, EOErelationships, EOAttributes,... objects. Many of them have references on other objects (see EOEntity/EORelationship for exemple). I'm not an expert about this, we've mainly used/followed previous gdl version
management for these objects.
If there's a prouved-to-work solution, I'll be happy to switch.

I don't have one.
I suggested that mainly because I didn't know that this GC could work with not GC-classes and was different than the Boehme GC, as someone kindly explained me.

BTW, about gdl2 on MacOSX, isn't it possible to use GNUstep extensions (GC clases) ?

I haven't tried yet to compile this framework, but I will.


Manuel Guesdon - OXYMIUM <address@hidden>
14 rue Jean-Baptiste Clement  -  93200 Saint-Denis  -  France
Tel: +33 1 4940 0999  -  Fax: +33 1 4940 0998


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