Re: core data, synchonizing multiple MOC's
Re: core data, synchonizing multiple MOC's
- Subject: Re: core data, synchonizing multiple MOC's
- From: Diederik Hoogenboom <email@hidden>
- Date: Sun, 21 May 2006 14:23:26 +0200
I was able to solve it by calling -[anArrayController
fetchWithRequest:nil merge:NO error:&error]; at the end of the
NSManagedObjectContextDidSaveNotification notification handling.
Thanks Jim and Alastair.
Diederik
On 21-mei-2006, at 10:47, Diederik Hoogenboom wrote:
Jim,
I am now catching the NSManagedObjectContextDidSaveNotification
notification and do the fresh from there. I have replaced -
objectWithID: by -refreshObject:mergeChanges
and to I have also added the following at the end of the notification:
[context processPendingChanges];
[anArrayController fetch:self];
Unfortunately, this seems to make no difference. The tableview is
not refreshed with the added objects.
Diederik
On 20-mei-2006, at 14:06, Jim Correia wrote:
On May 20, 2006, at 4:24 AM, Diederik Hoogenboom wrote:
I have a separate managed object context (threaded) in which I
insert a managed object. When the thread completes I save the
changes and try to make the main MOC aware of the new objects.
However the changes are not visible in the tableview bound to the
array controller (bound to the main MOC) . When I do the
inserting using the main MOC everything works fine.
The method I use to make the main MOC aware of the second MOC is
objectWithID using the result of objectID from the second MOC.
Instead of objectWithID: I have also tried refreshObject:
mergeChanges: with no result.
-objectWithID: doesn't make the MOC aware of the object. It causes
the MOC to fetch the object or return a fault.
-refreshObject:mergeChanges is the right way to merge in the
changes from another MOC, and for objects already in the UI, KVO
will cause the objects to update via bindings.
If new objects appear, you need to arrange for your controllers to
refetch.
Jim
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