Realm map clustering - swift

Question

To create your own data to present in realm map you need Model which looks like from example :
public class ABFRestaurantObject: Object {
public dynamic var businessId: String?
public dynamic var name: String?
public dynamic var address: String?
public dynamic var city: String?
public dynamic var state: String?
public dynamic var postalCode: String?
public dynamic var latitude: Double = 37.7859547
public dynamic var longitude: Double = -122.4024658
public dynamic var phoneNumber: String?
public let violations = List<ABFViolationObject>()
public let inspections = List<ABFInspectionObject>()
override public static func primaryKey() -> String? {
return "businessId"
}
}
What means this primaryKey ? Then how could I load my own data into it ? Of course omitting fact that you have to create your own model with custom propertiese ?
Thanks in advance!
EDIT
I am using Realm map kit clustering
I've created model :
class Test: Object {
public dynamic var id = 0
public dynamic var latitude = 45.0889
public dynamic var longitude = 54.1565
override static func primaryKey() -> String? {
return "id"
}
}
Then in my map controller I've added following functions and declarations :
var positions = try! Realm().objects(Test.self)
var position:Test!
override func viewDidLoad() {
super.viewDidLoad()
addNewVehicle()
populateMap()
}
func addNewPosition() {
let realm = try! Realm() // 1
try! realm.write { // 2
let newPos = Test() // 3
newPos.latitude = 50.060363
newPos.longitude = 19.939983
realm.add(newPos) // 5
self.position = newPos // 6
}
}
func populateMap() {
mapView.removeAnnotations(mapView.annotations) // 1
let positions = try! Realm().objects(Test.self) // 2
// Create annotations for each one
for pos in positions { // 3
let coord = CLLocationCoordinate2D(latitude: pos.latitude, longitude: pos.longitude);
let pin = MapPin(coordinate: coord, title: "asd", subtitle: "asd")
mapView.addAnnotation(pin) // 4
}
}
And at the end simple class fro creating pins :
class MapPin : NSObject, MKAnnotation {
var coordinate: CLLocationCoordinate2D
var title: String?
var subtitle: String?
init(coordinate: CLLocationCoordinate2D, title: String, subtitle: String) {
self.coordinate = coordinate
self.title = title
self.subtitle = subtitle
}
}
I would like to create few random pins and see if clustring works.
Atm i am getting an error in line :
safeObject->_coordinate = coordinate;
Thread 9: EXC_BAD_ACCESS(code=1,address=0x40)
po positions
Results<Test> (
[0] Test {
latitude = 50.060363;
longitude = 19.939983;
},
[1] Test {
latitude = 50.060363;
longitude = 19.939983;
},
[2] Test {
latitude = 50.060363;
longitude = 19.939983;
}
)
Then I've added as well to my AppDelegate.swift to the method didFinishLaunchingWithOptions :
let config = RLMRealmConfiguration.default()
config.schemaVersion = 1
config.migrationBlock = { (migration, oldSchemaVersion) in
}
RLMRealmConfiguration.setDefault(config)
Error: "Primary key property 'Test.id' has duplicate values after migration."

Answer 1

From the REALM documentation.
Override Object.primaryKey() to set the model’s primary key. Declaring
a primary key allows objects to be looked up and updated efficiently
and enforces uniqueness for each value. Once an object with a primary
key is added to a Realm, the primary key cannot be changed.
If you would like to create own Realm model simply create class with Object extension.
Example:
class User: Object {
dynamic var id = 0
dynamic var name = ""
dynamic var email = ""
}