I am trying to change a regular object to embedded. The requirements for to change the embedded ness is is that each embedded object can have one and exactly one object that is linked to it.
I know for sure that I have orphaned objects (zero parents) and want to make sure these gets deleted. If I fail to do this, the app will crash.
The question is. How do I find these orphaned children so I can delete them?
Class structure:
public class Parent:Object {
let childList = List<Child>()
}
public class Child:EmbeddedObject { //This used to be a regular object
let parents:LinkingObjects<Parent> = LinkingObjects(fromType: Parent.self, property: "childList")
}
Some children does not have parents. Migration function.
migration.enumerateObjects(ofType: Child.className()) { (oldObject, newObject) in
//How can I now that an old child object does not have a parent.
// oldObject?["parents"] doesn't seem to exist
}
Any suggestions?