realm_api.swift

/*
Operations on context
*/
protocol StorageContext {
  /*
  Create a new object with default values
  return an object that is conformed to the `Storable` protocol
  */
  func create<T: Storable>(_ model: T.Type, completion: @escaping ((T) -> Void)) throws
  /*
  Save an object that is conformed to the `Storable` protocol
  */
  func save(object: Storable) throws
  /*
  Update an object that is conformed to the `Storable` protocol
  */
  func update(block: @escaping () -> ()) throws
  /*
  Delete an object that is conformed to the `Storable` protocol
  */
  func delete(object: Storable) throws
  /*
  Delete all objects that are conformed to the `Storable` protocol
  */
  func deleteAll<T: Storable>(_ model: T.Type) throws
  /*
  Return a list of objects that are conformed to the `Storable` protocol
  */
  func fetch<T: Storable>(_ model: T.Type, predicate: NSPredicate?, sorted: Sorted?, completion: (([T]) -> ()))
}