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Core Data: thread safety of NSPersistentStore +metadataForPersistentStoreWithURL:... (and +set...)?

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Core Data: thread safety of NSPersistentStore +metadataForPersistentStoreWithURL:... (and +set...)?

Subject: Core Data: thread safety of NSPersistentStore +metadataForPersistentStoreWithURL:... (and +set...)?
From: Jim Correia <email@hidden>
Date: Fri, 24 Apr 2009 21:17:38 -0400

I don't see that the documentation specifically calls out

@interface NSPersistentStore + (NSDictionary *)metadataForPersistentStoreWithURL:(NSURL *)url error: (NSError **)error; + (BOOL)setMetadata:(NSDictionary *)metadata forPersistentStoreWithURL: (NSURL*)url error:(NSError **)error; @end

as being thread safe. (And in fact, these are abstract and need to be implemented by the concrete stores.)

(Outside of the obvious potential race condition) Is it intended that these methods are thread safe for Apple-supplied persistent stores (i.e. concurrently and/or non-main-thread callable)?

Jim

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