CoreDataModelActor is a Swift Package that extends and enhances the ideas presented by fatbobman in his article and the associated experimental project CoreDataEvolution. This package introduces support for older platforms (down to iOS 13) and provides two different executors to manage Core Data concurrency across various versions of Apple's operating systems.
Here’s an example of how to use CoreDataModelActor to manage Core Data operations with actors:
import Foundation import CoreDataModelActor import CoreDataModelActorMacros @NSModelActor actor DocumentsRepository { func toggleFavorite(objectID: NSManagedObjectID) async throws { guard let document = try modelContext.existingObject(with: objectID) as? Item else { return } document.timestamp = .now try modelContext.save() } }Or, if you don't want to use the macro:
import CoreData import CoreDataModelActor actor DocumentsRepository: NSModelActor { let modelContainer: NSPersistentContainer let modelExecutor: any CoreDataModelActor.NSModelObjectContextExecutor init(container: NSPersistentContainer) { self.modelExecutor = NSModelObjectContextExecutorFactory.makeExecutor(context: container.newBackgroundContext()) self.modelContainer = container } func toggleFavorite(objectID: NSManagedObjectID) async throws { guard let document = try modelContext.existingObject(with: objectID) as? Item else { return } document.timestamp = .now try modelContext.save() } }- macOS 10.15
- iOS 13
- tvOS 13
- watchOS 6
- Mac Catalyst 13
This project is inspired by and based on the experimental work done by fatbobman. You can find the original article and project at the following links:
- Article: Core Data Reform: Achieving Elegant Concurrency Operations Like SwiftData
- Experimental Project: CoreDataEvolution