Type Method

mergeChanges(fromRemoteContextSave:into:)

Handles changes from other processes or from a serialized state.

Declaration

class func mergeChanges(fromRemoteContextSave changeNotificationData: [AnyHashable : Any], into contexts: [NSManagedObjectContext])

Discussion

This method more efficiently merges changes into multiple contexts as well as nested contexts. The dictionary keys should be one or more from an NSManagedObjectContextObjectsDidChange: NSInsertedObjectsKey, NSUpdatedObjectsKey, NSDeletedObjectsKey. The values should be an NSArray of either NSManagedObjectID or NSURL objects conforming to valid results from uriRepresentation().

See Also

Managing Concurrency

var automaticallyMergesChangesFromParent: Bool

A Boolean value that indicates whether the context automatically merges changes saved to its persistent store coordinator or parent context.

var concurrencyType: NSManagedObjectContextConcurrencyType

The concurrency type for the context.

var queryGenerationToken: NSQueryGenerationToken?

Returns the token associated with the query generation currently in use by this context.

var mergePolicy: Any

The merge policy of the context.

var transactionAuthor: String?

The author for the context that is used as an identifier in persistent history transactions.

func mergeChanges(fromContextDidSave: Notification)

Merges the changes specified in a given notification.

func setQueryGenerationFrom(NSQueryGenerationToken?)

Sets the query generation this context should use.

enum NSManagedObjectContextConcurrencyType

Constants to indicate the concurrency pattern with which a context will be used.

let NSManagedObjectContextQueryGenerationKey: String

Constant used to reference the query generation token.