What happens when a fault is "fired"?
+3
A:
When a fault "fires", the persistent data for the entity instance represented by the fault is pulled from the persistent store and the fault is converted into a full instance. If the data for the instance is present in the NSPersistentStoreCoordinator's row cache, I believe that data is used instead, depending on the time since the data was cached and the value of the stalenessInterval for the managed object context containing the fault. If the cached data is older than stalenessInterval, it is fetched from the persistent store even if a cached copy is present.
Barry Wark
2010-06-09 19:08:16
The nomenclature is reversed from what you would expect it to be. In training, I term faults as object "ghost" and faulting as "materializing" until people get the idea. see http://stackoverflow.com/questions/3006347/is-this-a-bug-in-the-documentation-existingobjectwithiderror-or-objectwithid/3007682#3007682
TechZen
2010-06-09 21:01:59