public void Default()
{
using (NSFetchedResultsController frc = new NSFetchedResultsController()) {
NSError e;
Assert.False(frc.PerformFetch(out e), "PerformFetch");
Assert.Null(e, "NSError");
}
}
public void PerformFetch_Minimal()
{
using (NSManagedObjectContext c = new NSManagedObjectContext(NSManagedObjectContextConcurrencyType.PrivateQueue))
using (NSFetchRequest r = new NSFetchRequest()) {
r.SortDescriptors = new NSSortDescriptor[] {
new NSSortDescriptor("key", true)
};
r.Entity = new NSEntityDescription();
using (NSFetchedResultsController frc = new NSFetchedResultsController(r, c, null, null)) {
NSError e;
Assert.False(frc.PerformFetch(out e), "PerformFetch");
}
}
}
public override void DidChangeContent(NSFetchedResultsController controller)
{
TableView.ReloadData();
}
public void Sections()
{
// https://bugzilla.xamarin.com/show_bug.cgi?id=13785
// use Caches directory so this works with tvOS on devices (as well as existing iOS devices)
string applicationDocumentsDirectory = NSSearchPath.GetDirectories(NSSearchPathDirectory.CachesDirectory, NSSearchPathDomain.User, true).LastOrDefault();
using (var ManagedObjectModel = new NSManagedObjectModel()) {
{
// create an entity description
NSEntityDescription entity = new NSEntityDescription();
entity.Name = "Earthquake";
// create an attribute for the entity
NSAttributeDescription date = new NSAttributeDescription();
date.AttributeType = NSAttributeType.Date;
date.Name = "date";
date.Optional = false;
NSAttributeDescription latitude = new NSAttributeDescription();
latitude.AttributeType = NSAttributeType.Double;
latitude.Name = "latitude";
latitude.Optional = false;
NSAttributeDescription location = new NSAttributeDescription();
location.AttributeType = NSAttributeType.String;
location.Name = "location";
location.Optional = false;
NSAttributeDescription longitude = new NSAttributeDescription();
longitude.AttributeType = NSAttributeType.Double;
longitude.Name = "longitude";
longitude.Optional = false;
NSAttributeDescription magnitude = new NSAttributeDescription();
magnitude.AttributeType = NSAttributeType.Float;
magnitude.Name = "magnitude";
magnitude.Optional = false;
NSAttributeDescription USGSWebLink = new NSAttributeDescription();
USGSWebLink.AttributeType = NSAttributeType.String;
USGSWebLink.Name = "USGSWebLink";
USGSWebLink.Optional = false;
// assign the properties to the entity
entity.Properties = new NSPropertyDescription[] {
date,
latitude,
location,
longitude,
magnitude,
USGSWebLink
};
// add the entity to the model, and then add a configuration that
// contains the entities
ManagedObjectModel.Entities = new NSEntityDescription[] { entity };
ManagedObjectModel.SetEntities(ManagedObjectModel.Entities, String.Empty);
}
using (var PersistentStoreCoordinator = new NSPersistentStoreCoordinator(ManagedObjectModel)) {
{
var storePath = applicationDocumentsDirectory + "/Earthquakes.sqlite";
var storeUrl = new NSUrl(storePath, false);
NSError error;
if (PersistentStoreCoordinator.AddPersistentStoreWithType(NSPersistentStoreCoordinator.SQLiteStoreType, null, storeUrl, null, out error) == null)
{
Assert.Fail("Unresolved error " + error + ", " + error.UserInfo);
}
}
using (var ManagedObjectContext = new NSManagedObjectContext()) {
ManagedObjectContext.PersistentStoreCoordinator = PersistentStoreCoordinator;
// NSNotificationCenter.DefaultCenter.AddObserver (
// this, new MonoTouch.ObjCRuntime.Selector ("mergeChanges"),
// "NSManagedObjectContextDidSaveNotification", null);
NSFetchRequest fetchRequest = new NSFetchRequest();
NSEntityDescription entity = NSEntityDescription.EntityForName("Earthquake", ManagedObjectContext);
fetchRequest.Entity = entity;
NSSortDescriptor sortDescriptor = new NSSortDescriptor("date", false);
fetchRequest.SortDescriptors = new [] { sortDescriptor };
NSFetchedResultsController fetchedResultsController = new NSFetchedResultsController(
fetchRequest, ManagedObjectContext, null, null);
NSError error;
if (!fetchedResultsController.PerformFetch(out error))
{
Assert.Fail("Unresolved error: " + error + ", " + error.UserInfo);
}
var sections = fetchedResultsController.Sections;
Assert.That(sections [0].GetType().FullName, Is.StringEnding("CoreData.NSFetchedResultsSectionInfoWrapper"), "Wrapper");
}
}
}
}
public void Cache()
{
// null -> delete all cache
NSFetchedResultsController.DeleteCache(null);
}
public override void DidChangeContent (NSFetchedResultsController controller)
{
TableView.ReloadData ();
}
public override void DidChangeObject(NSFetchedResultsController controller, NSObject anObject, NSIndexPath indexPath, NSFetchedResultsChangeType type, NSIndexPath newIndexPath)
{
if (indexPath.Row >= _products.Count)
{
}
}
