CSObjectObserver

@available(OSX 10.12, *)
@objc
public protocol CSObjectObserver : AnyObject

Implement the CSObjectObserver protocol to observe changes to a single NSManagedObject instance. CSObjectObservers may register themselves to a CSObjectMonitor‘s -addObjectObserver: method:

CSObjectMonitor *monitor = [CSCoreStore monitorObject:myObject];
[monitor addObjectObserver:self];

Declaration

Swift

@objc
optional func objectMonitor(_ monitor: CSObjectMonitor, willUpdateObject object: Any)

Parameters

`monitor`	the `CSObjectMonitor` monitoring the object being observed
`object`	the `NSManagedObject` instance being observed


                    
                    
                    objectMonitor(_:didUpdateObject:changedPersistentKeys:)

Handles processing right after a change to the observed object occurs

Declaration

Swift

@objc
optional func objectMonitor(_ monitor: CSObjectMonitor, didUpdateObject object: Any, changedPersistentKeys: Set<String>)

Parameters

`monitor`	the `CSObjectMonitor` monitoring the object being observed
`object`	the `NSManagedObject` instance being observed
`changedPersistentKeys`	an `NSSet` of key paths for the attributes that were changed. Note that `changedPersistentKeys` only contains keys for attributes/relationships present in the persistent store, thus transient properties will not be reported.


                    
                    
                    objectMonitor(_:didDeleteObject:)

Handles processing right after object is deleted

Declaration

Swift

@objc
optional func objectMonitor(_ monitor: CSObjectMonitor, didDeleteObject object: Any)

Parameters

`monitor`	the `CSObjectMonitor` monitoring the object being observed
`object`	the `NSManagedObject` instance being observed