Hi folks,
I'm clearly doing something daft but unable to see the error of my ways.
Distilling my problem down into the Department & Employees example, both are
custom NSManagedObject subclasses, each with an inverse to-many / to-one
relationship as you'd expect. My problem is that Department's custom
-awakeFromInsert gets called, yet its -addEmployeesObject and -addEmployees
methods don't ever get called. If I add employees in the app, it all works
swimmingly, but my custom accessors aren't ever used.
As per searches on why custom Core Data accessors aren't being called, I've
checked the model specifies that the Department entity specifies the custom
class (which it does, no matter how many times I keep checking it). And it must
be, else the custom -awakeFromInsert wouldn't be firing. Ditto the Employee
entity specifies the Employee class.
The custom accessors are as per Xcode's Design -> Data Model -> Copy Obj-C 2.0
Method Invocations / Declarations to Clipboard, I'm doing nothing clever with
them (in this sample app). It makes no difference if I use the Obj-C 1.0
templates from the same menu either.
Can't figure out why the initialiser is being called, but not the custom
setters.
On the other hand the Employee class can have a custom -setDepartment like so:
- (void)setDepartment:(Department *)value
{
[self willChangeValueForKey:@"department"];
[self setValue:value forKey:@"primitiveDepartment"];
[self didChangeValueForKey:@"department"];
}
... which does get called. Sob...
I wouldn't mind so much if the app didn't actually work correctly, but that
it's deliberately ignoring my lovely custom accessors is a slap in the face...
Thanks in advance for any "you stupid idiot you need to do this, man" replies :)
Cheers,
Ken
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Dr. Ken Tabb
Mac & UNIX programmer
Neural network & computer vision researcher
University of Hertfordshire, UK
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