Unknown command type when issuing a NSBatchDeleteRequest

Question

Created Jun ’16

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Hi! I'm basically trying to delete all managed entitiy from a MOC using a NSBatchDeleteRequest. However when issuing the request i get the rather strange error:

Unknown command type <NSBatchDeleteRequest : resultType : 2, fetch :<NSFetchRequest: 0x100a304e0> (entity: Album; predicate: ((null)); sortDescriptors: ((null)); type: NSManagedObjectIDResultType; ) >

I'm running OSX 10.11.5

I'm using this simple code snippet here:

let moc = delegate.managedObjectContext
let deleteRequest = NSBatchDeleteRequest(fetchRequest: NSFetchRequest(entityName: "Album"))
deleteRequest.resultType = .resultTypeCount
     
do {
  try moc.execute(deleteRequest)
} catch let error as NSError {
  print(error)
}

Am I doing something fundamentally wrong here?

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Answer 1

oxisto OP

Jun ’16

Ok nevermind... The Xcode generated Core Data code with NSXMLStoreType, which in fact does not seem to support Batch (Delete) Requests.

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