Instead of wrapping CoreData, use it directly :-)

ManagedToDos is a small example application demonstrating the use of ManagedModels, which adds some SwiftData-like @Model support to regular CoreData.

Blog article describing ManagedModels: @Model for CoreData.

The example uses two CoreData model classes, ToDo:

@Model class ToDo: NSManagedObject {
    
    var title     : String
    var isDone    : Bool
    var priority  : Int
    var created   : Date
    var due       : Date?
    var list      : ToDoList

    var isOverDue : Bool { ... }
}

and ToDoList:

@Model class ToDoList: NSManagedObject {
    
    var title : String
    var toDos : Set<ToDo>
    
    var hasOverdueItems : Bool { ... }
}

The macro implementation requires Xcode 15/Swift 5.9 for compilation. The generated code itself though should backport way back to iOS 10 / macOS 10.12 though (when NSPersistentContainer was introduced).

Package URLs:

https://github.com/Data-swift/ManagedModels.git
https://github.com/Data-swift/ManagedToDosApp.git

ManagedModels has no other dependencies.

• ManagedModels
  • Blog article: @Model for CoreData.
• Apple:
  • CoreData
  • SwiftData
    • Meet SwiftData
    • Build an App with SwiftData
    • Model your Schema with SwiftData
  • Enterprise Objects Framework / aka EOF
    • Developer Guide
• Lighter.swift, typesafe and superfast SQLite Swift tooling.
• ZeeQL, prototype of an EOF for Swift, with many database backends.

SwiftData and SwiftUI are trademarks owned by Apple Inc. Software maintained as a part of the this project is not affiliated with Apple Inc.

ManagedModels are brought to you by Helge Heß / ZeeZide. We like feedback, GitHub stars, cool contract work, presumably any form of praise you can think of.