I'm confused by the following code. What I'm trying to do is store a reference
in a DogManagedObject transformable property, to a CatManagedObject, then
retrieve the Cat from the Dog at a later date.
However, when I log the output I get a class of 'Dog' rather than 'Cat'.
Any ideas?
//add the NSData
NSURL *uri = [[catManagedObject objectID] URIRepresentation];
NSData *uriData = [NSKeyedArchiver archivedDataWithRootObject:uri];
//selectedInstrument is a transformable property
dogManagedObject.selectedInstrument = uriData;
[_managedObjectContext save:&error];
//retrive the NSData
NSData * data = (NSData *) dogManagedObject.selectedInstrument;
NSURL *uri2 = [NSKeyedUnarchiver unarchiveObjectWithData:data];
NSManagedObjectID *moID = [_persistentStoreCoordinator
managedObjectIDForURIRepresentation:uri2];
CatManagedObject * cat = (CatManagedObject *)[_managedObjectContext
objectWithID:moID];
NSLog(@"log %@", cat);
Ouputs....
log <DogManagedObject: 0x7853840> (entity: DogManagedObject; id: 0x7853f90
<x-coredata://D9B53F16-BE02-4125-ACF1-ABF50835F296/DogManagedObject/p1> ; data:
{
cats = "<relationship fault: 0x784f670 'cats'>";
selectedCat = "<62706c69 73743030 d4010203.... etc
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