nsmanagedobject

I have an Xcode-generated NSManagedObject class for my CoreData model. @objc(SomeClass) class SomeClass : NSManagedObject { /* ... */ } It is defined in a file named 'SomeClass.swift'. I would like to extend this class, so I created 'SomeClassExtension.swift'. I define the extension like this: extension SomeClass { class func typeMethod1() {} func instanceMethod2() {} } These extension methods can be used within this defining file, but they are not visible outside of it. What is causing this issue? It sounds like your new file (SomeClassExtension.swift) didn't get included in the correct

I am creating a framework that allows me to use Core Data. In the framework's test target, I have configured a data model named MockModel.xcdatamodeld . It contains a single entity named MockManaged that has a single Date property. So that I can test my logic, I am creating an in-memory store. When I want to validate my saving logic, I create an instance of the in-memory store and use it. However, I keep getting the following output in the console: 2018-08-14 20:35:45.340157-0400 xctest[7529:822360] [error] warning: Multiple NSEntityDescriptions claim the NSManagedObject subclass

In a managed object i have stored a path to an image file in the application's container. When the managed object get’s deleted, the image file should be moved to trash. This should be done as late as possible, so that i can provide undo functionality for as long as possible. I was following the answers of this question: How to handle cleanup of external data when deleting Core Data objects , and was overriding -didSave in my managed object subclass to trash the files. Turns out, this works only if: the managed object has been added, the managed object context has been saved , the managed

I have around 10000 objects of entity ' Message '. When I add a new ' Message ' i want to first see whether it exists - and if it does just update it's data, but if it doesn't to create it. Right now the "find-or-create" algorithm works with by saving all of the Message objects ' objectID ' in one array and then filtering through them and getting the messages with existingObjectWithID:error: This works fine but in my case when I fetch an 'Message' using existingObjectWithID : and then try to set and save a property by setting the property of the 'Message' object and calling save: on it's

I have two entities, each displaying on its own UITableView section. I've enabled editing to allow the user to delete rows by swiping to the right. This works fine for the first entity, but when I try to delete an object in the second entity, I get this error: An NSManagedObjectContext cannot delete objects in other contexts I get what the error says, but I can't see how it applies here. I use a retained reference to my context to create, fetch, and delete all objects from the database, so I'm sure there's only the one context. I'm also not using multiple threads. Any idea what could be