git.r.bdr.sh - rbdr/captura/blob - Captura/Data/Persistence.swift

   1 import CoreData
   2
   3 struct PersistenceController {
   4     static let shared = PersistenceController()
   5
   6     static var preview: PersistenceController = {
   7         let result = PersistenceController(inMemory: true)
   8         return result
   9     }()
  10
  11     let container: NSPersistentCloudKitContainer
  12
  13     init(inMemory: Bool = false) {
  14       container = NSPersistentCloudKitContainer(name: "Captura")
  15
  16     #if DEBUG
  17     do {
  18         // Use the container to initialize the development schema.
  19         try container.initializeCloudKitSchema(options: [])
  20     } catch {
  21         // Handle any errors.
  22     }
  23     #endif
  24
  25         if inMemory {
  26             container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
  27         }
  28         container.loadPersistentStores(completionHandler: { (storeDescription, error) in
  29             if let error = error as NSError? {
  30                 // Replace this implementation with code to handle the error appropriately.
  31                 // 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.
  32
  33                 /*
  34                  Typical reasons for an error here include:
  35                  * The parent directory does not exist, cannot be created, or disallows writing.
  36                  * The persistent store is not accessible, due to permissions or data protection when the device is locked.
  37                  * The device is out of space.
  38                  * The store could not be migrated to the current model version.
  39                  Check the error message to determine what the actual problem was.
  40                  */
  41                 fatalError("Unresolved error \(error), \(error.userInfo)")
  42             }
  43         })
  44         container.viewContext.automaticallyMergesChangesFromParent = true
  45     }
  46 }