Mercurial > public > simoleon

annotate Simoleon/Persistence.swift @ 173:ad8c6567539d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
restart project
author Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
date Tue, 26 Oct 2021 13:09:17 +0200
parents
children 5a9430fd6b4d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
173
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
1 //
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
2 // Persistence.swift
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
3 // Simoleon
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
4 //
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
5 // Created by Dennis Concepción Martín on 26/10/21.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
6 //
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
7
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
8 import CoreData
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
9
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
10 struct PersistenceController {
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
11 static let shared = PersistenceController()
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
12
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
13 static var preview: PersistenceController = {
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
14 let result = PersistenceController(inMemory: true)
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
15 let viewContext = result.container.viewContext
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
16 for _ in 0..<10 {
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
17 let newItem = Item(context: viewContext)
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
18 newItem.timestamp = Date()
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
19 }
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
20 do {
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
21 try viewContext.save()
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
22 } catch {
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
23 // Replace this implementation with code to handle the error appropriately.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
24 // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
25 let nsError = error as NSError
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
26 fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
27 }
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
28 return result
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
29 }()
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
30
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
31 let container: NSPersistentCloudKitContainer
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
32
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
33 init(inMemory: Bool = false) {
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
34 container = NSPersistentCloudKitContainer(name: "Simoleon")
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
35 if inMemory {
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
36 container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
37 }
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
38 container.loadPersistentStores(completionHandler: { (storeDescription, error) in
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
39 if let error = error as NSError? {
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
40 // Replace this implementation with code to handle the error appropriately.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
41 // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
42
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
43 /*
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
44 Typical reasons for an error here include:
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
45 * The parent directory does not exist, cannot be created, or disallows writing.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
46 * The persistent store is not accessible, due to permissions or data protection when the device is locked.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
47 * The device is out of space.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
48 * The store could not be migrated to the current model version.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
49 Check the error message to determine what the actual problem was.
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
50 */
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
51 fatalError("Unresolved error \(error), \(error.userInfo)")
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
52 }
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
53 })
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
54 }
ad8c6567539d restart project
Dennis Concepcion Martin <dennisconcepcionmartin@gmail.com>
parents:
diff changeset
55 }