63 lines
1.7 KiB
Swift
63 lines
1.7 KiB
Swift
//
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// ManagedObjectContextObjectsDidChange.swift
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// CoreDataStack
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//
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// Created by sxiaojian on 2021/2/8.
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//
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import Foundation
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import CoreData
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public struct ManagedObjectContextObjectsDidChangeNotification {
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public let notification: Foundation.Notification
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public let managedObjectContext: NSManagedObjectContext
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public init?(notification: Foundation.Notification) {
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guard notification.name == .NSManagedObjectContextObjectsDidChange,
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let managedObjectContext = notification.object as? NSManagedObjectContext else {
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return nil
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}
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self.notification = notification
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self.managedObjectContext = managedObjectContext
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}
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}
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extension ManagedObjectContextObjectsDidChangeNotification {
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public var insertedObjects: Set<NSManagedObject> {
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return objects(forKey: NSInsertedObjectsKey)
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}
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public var updatedObjects: Set<NSManagedObject> {
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return objects(forKey: NSUpdatedObjectsKey)
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}
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public var deletedObjects: Set<NSManagedObject> {
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return objects(forKey: NSDeletedObjectsKey)
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}
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public var refreshedObjects: Set<NSManagedObject> {
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return objects(forKey: NSRefreshedObjectsKey)
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}
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public var invalidedObjects: Set<NSManagedObject> {
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return objects(forKey: NSInvalidatedObjectsKey)
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}
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public var invalidatedAllObjects: Bool {
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return notification.userInfo?[NSInvalidatedAllObjectsKey] != nil
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}
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}
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extension ManagedObjectContextObjectsDidChangeNotification {
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private func objects(forKey key: String) -> Set<NSManagedObject> {
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return notification.userInfo?[key] as? Set<NSManagedObject> ?? Set()
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}
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}
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