ObjectObserver

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

Implement the ObjectObserver protocol to observe changes to a single DynamicObject instance. ObjectObservers may register themselves to a ObjectMonitor‘s addObserver(_:) method:

let monitor = CoreStore.monitorObject(object)
monitor.addObserver(self)

ObjectEntityType
The DynamicObject type for the observed object
Declaration
Swift

associatedtype ObjectEntityType : DynamicObject


                    
                    
                    objectMonitor(_:willUpdateObject:)

Default implementation

Handles processing just before a change to the observed object occurs. (Optional) The default implementation does nothing.

Default Implementation

Declaration

Swift

func objectMonitor(_ monitor: ObjectMonitor<ObjectEntityType>, willUpdateObject object: ObjectEntityType)

Parameters

`monitor`	the `ObjectMonitor` monitoring the object being observed
`object`	the `DynamicObject` instance being observed


                    
                    
                    objectMonitor(_:didUpdateObject:changedPersistentKeys:)

Default implementation

Handles processing right after a change to the observed object occurs. (Optional) The default implementation does nothing.

Default Implementation

Declaration

Swift

func objectMonitor(_ monitor: ObjectMonitor<ObjectEntityType>, didUpdateObject object: ObjectEntityType, changedPersistentKeys: Set<KeyPathString>)

Parameters

`monitor`	the `ObjectMonitor` monitoring the object being observed
`object`	the `DynamicObject` instance being observed
`changedPersistentKeys`	a `Set` 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:)

Default implementation

Handles processing right after object is deleted. (Optional) The default implementation does nothing.

Default Implementation

Declaration

Swift

func objectMonitor(_ monitor: ObjectMonitor<ObjectEntityType>, didDeleteObject object: ObjectEntityType)

Parameters

`monitor`	the `ObjectMonitor` monitoring the object being observed
`object`	the `DynamicObject` instance being observed