uimanageddocument

Got a Stumper (at least for me). I am using iOS 5.0 w/ ARC, and Core Data inside of UIManagedDocument. I have an Entity (Group) with a to-many relationship (called people) to entity (Person). When I add a new Group, and add then a new Person (setting the person's .group relationship to the new group), I cannot retrieve the related people using a predicate on the Person entity where ("group == %@", myGroup). I also tried using the Group's addPerson setter. If I shut down XCode simulator and rerun it, it recognizes the relationship that was created in the previous run, I can even add new people

I am using UIManagedDocument with Parent Child context. In my child context I do the following Code 1 NSSet *results = [self.event.memberships filteredSetUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(id evaluatedObject, NSDictionary *bindings) { return ([[evaluatedObject deleted] boolValue] == NO); }]]; Above code returns the expected results (only Not deleted members for the event). Code 2 But this code does not. It fetches all records. NSPredicate *predicate = [NSPredicate predicateWithFormat:@"deleted == NO"]; NSSet *results = [self.event.memberships filteredSetUsingPredicate

I'm preparing an update for a Core Data based app for fixes with iOS 7. I use Xcode 5 and iOS 7 SDK GM. However I realized a different behavior of the persistent store (which is a UIManagedDocument ): Prior to iOS 7 builds there was only one file persistentStore in the documents folder (sometimes there was a second one persistentStore-journal ). In iOS 7 builds (clean installation) there are now three files for the persistent store: persistentStore persistentStore-wal and persistentStore-shm Did Apple change the journal mode by default to WAL now? I wonder if there is an impact on my app