Re: Key-Value Observing implementation
I will be starting work on this. --- Sa¹o Kiselkov <[EMAIL PROTECTED]> wrote: > Hi. I'm working on a CoreData implementation for GNUstep, but that depends on > the Key-Value Observing feature. Is somebody already working on it, or may I > start it? > > > > ___ > Gnustep-dev mailing list > Gnustep-dev@gnu.org > http://lists.gnu.org/mailman/listinfo/gnustep-dev > Gregory John Casamento -- CEO/President Open Logic Corp. (A MD Corp.) ## Maintainer of Gorm (IB Equiv.) for GNUstep. ___ Gnustep-dev mailing list Gnustep-dev@gnu.org http://lists.gnu.org/mailman/listinfo/gnustep-dev
Re: Key-Value Observing implementation
On 2005-06-17 19:50:21 +0100 Sašo Kiselkov <[EMAIL PROTECTED]> wrote: > Hi. I'm working on a CoreData implementation for GNUstep, but that depends on > the Key-Value Observing feature. Is somebody already working on it, or may I > start it? I did some work on it a while back ... but nothing usable yet, and don't know when I'll get back to it. ___ Gnustep-dev mailing list Gnustep-dev@gnu.org http://lists.gnu.org/mailman/listinfo/gnustep-dev
Re: Key-Value Observing implementation
Sa¹o, --- Sa¹o Kiselkov <[EMAIL PROTECTED]> wrote: > Hi. I'm working on a CoreData implementation for GNUstep, but that depends on > the Key-Value Observing feature. Is somebody already working on it, or may I > start it? I may not be starting on this right away and I don't want to hold you up. If you are ready to start, please go ahead and implement whatever you feel you need to. I only want to make certain this works as well as possible with the rest of GNUstep as well as Gorm. Thanks, GJC Gregory John Casamento -- CEO/President Open Logic Corp. (A MD Corp.) ## Maintainer of Gorm (IB Equiv.) for GNUstep. ___ Gnustep-dev mailing list Gnustep-dev@gnu.org http://lists.gnu.org/mailman/listinfo/gnustep-dev
Re: Key-Value Observing implementation
On 2005-06-18 04:19:02 +0100 Gregory John Casamento <[EMAIL PROTECTED]> wrote: > Sa¹o, > > --- Sa¹o Kiselkov <[EMAIL PROTECTED]> wrote: >> Hi. I'm working on a CoreData implementation for GNUstep, but that depends >> on >> the Key-Value Observing feature. Is somebody already working on it, or may I >> start it? > > I may not be starting on this right away and I don't want to hold you up. If > you are ready to start, please go ahead and implement whatever you feel you > need to. Sounds like my partial implementation is the most advanced code we have at present then. I could commit it to CVS as a work in progress, or provide it in some other way if it's needed. It implements all the trickier parts of KVO, but misses out all the boring details :-) The implementation is not as described in the page I put on the wiki ... after I wrote that I came to the conclusion that the method using a proxy would be too slow and inefficient, so what I actually wrote was code to use the runtime to create an observer subclass for each class being observed, and change the isa ivar of any observed object to point to that subclass, which could handle the observatiuon process, but perform all other methods at the same speed as the original. ___ Gnustep-dev mailing list Gnustep-dev@gnu.org http://lists.gnu.org/mailman/listinfo/gnustep-dev
Re: Key-Value Observing implementation
Richard, --- Richard Frith-Macdonald <[EMAIL PROTECTED]> wrote: > On 2005-06-18 04:19:02 +0100 Gregory John Casamento > <[EMAIL PROTECTED]> wrote: > > > Sa¹o, > > > > --- Sa¹o Kiselkov <[EMAIL PROTECTED]> wrote: > >> Hi. I'm working on a CoreData implementation for GNUstep, but that depends > > >> on > >> the Key-Value Observing feature. Is somebody already working on it, or may > I > >> start it? > > > > I may not be starting on this right away and I don't want to hold you up. > If > > you are ready to start, please go ahead and implement whatever you feel you > > need to. > > Sounds like my partial implementation is the most advanced code we have at > present then. > I could commit it to CVS as a work in progress, or provide it in some other > way if it's needed. I agree. We should start with your implementation, since it sounds like it's furthest along. > It implements all the trickier parts of KVO, but misses out all the boring > details :-) > > The implementation is not as described in the page I put on the wiki ... > after I wrote that I came to the conclusion that the method using a proxy > would be too slow and inefficient, so what I actually wrote was code to use > the runtime to create an observer subclass for each class being observed, and > change the isa ivar of any observed object to point to that subclass, which > could handle the observatiuon process, but perform all other methods at the > same speed as the original. I think this is okay. In fact, I believe that Apple does it more or less the same way. Later, GJC Gregory John Casamento -- CEO/President Open Logic Corp. (A MD Corp.) ## Maintainer of Gorm (IB Equiv.) for GNUstep. ___ Gnustep-dev mailing list Gnustep-dev@gnu.org http://lists.gnu.org/mailman/listinfo/gnustep-dev
