Instance Method

changedValuesForCurrentEvent()

Returns a dictionary containing the keys and old values of persistent properties that have changed since the last posting of NSManagedObjectContextObjectsDidChange.

Declaration

func changedValuesForCurrentEvent() -> [String : Any]

Return Value

A dictionary whose keys are the names of persistent properties that have changed since the last posting of NSManagedObjectContextObjectsDidChange, and whose values are the old value of the persistent properties.

Discussion

This method only reports changes to properties that are defined as persistent properties of the receiver, not changes to transient properties or custom instance variables. This method does not unnecessarily fire relationship faults.

See Also

Managing Change Events

class var contextShouldIgnoreUnmodeledPropertyChanges: Bool

A Boolean value that indicates whether instances of the class should be marked as having changes if an unmodeled property is changed.

func awakeFromFetch()

Provides an opportunity to add code into the life cycle of the managed object when it is being fulfilled from a fault.

func awakeFromInsert()

Provides an opportunity to add code into the life cycle of the managed object when it is initially created.

func awake(fromSnapshotEvents: NSSnapshotEventType)

Provides an opportunity to add code into the life cycle of the managed object when it is being fulfilled from a snapshot.

func changedValues() -> [String : Any]

Returns a dictionary containing the keys and (old) values of persistent properties that have been changed since the last fetching or saving of the managed object.

func committedValues(forKeys: [String]?) -> [String : Any]

Returns a dictionary of the last fetched or saved values of the managed object for the properties specified by the given keys.

func prepareForDeletion()

Provides an opportunity to add code into the life cycle of the managed object when it is about to be deleted.

func willSave()

Provides an opportunity to add code into the life cycle of the managed object when it is about to be saved.

func didSave()

Provides an opportunity to add code into the life cycle of the managed object after the managed object’s context completes a save operation.

func willTurnIntoFault()

Provides an opportunity to add code into the life cycle of the managed object before it is converted to a fault.

func didTurnIntoFault()

Provides an opportunity to add code into the life cycle of the managed object when it is turned into a fault.

class func fetchRequest() -> NSFetchRequest<NSFetchRequestResult>

Returns a new fetch request initialized with the entity represented by this subclass.

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