public static CKFetchRecordChangesOperation GetOperation (CKRecordZoneID recordZoneID, CKServerChangeToken previousServerChangeToken)
{
IntPtr classPtr = Class.GetHandle ("CKFetchRecordChangesOperation");
IntPtr allocSel = Selector.GetHandle ("alloc");
IntPtr objPtr = IntPtr_objc_msgSend (classPtr, allocSel);
IntPtr ret = IntPtr_objc_msgSend_IntPtr_IntPtr (objPtr, Selector.GetHandle ("initWithRecordZoneID:previousServerChangeToken:"), recordZoneID.Handle, previousServerChangeToken == null ? IntPtr.Zero : previousServerChangeToken.Handle);
return Runtime.GetNSObject<CKFetchRecordChangesOperation> (ret);
}
public void Reset ()
{
ChangeToken = null;
Results.Reset ();
recordsByID.Clear ();
}
public void Reset()
{
ChangeToken = null;
Results.Reset();
recordsByID.Clear();
}
public static CKFetchRecordChangesOperation GetOperation(CKRecordZoneID recordZoneID, CKServerChangeToken previousServerChangeToken)
{
IntPtr classPtr = Class.GetHandle("CKFetchRecordChangesOperation");
IntPtr allocSel = Selector.GetHandle("alloc");
IntPtr objPtr = IntPtr_objc_msgSend(classPtr, allocSel);
IntPtr ret = IntPtr_objc_msgSend_IntPtr_IntPtr(objPtr, Selector.GetHandle("initWithRecordZoneID:previousServerChangeToken:"), recordZoneID.Handle, previousServerChangeToken == null ? IntPtr.Zero : previousServerChangeToken.Handle);
return(Runtime.GetNSObject <CKFetchRecordChangesOperation> (ret));
}
public override Task <Results> Run()
{
string zoneName;
bool shouldCache;
if (!TryGetString("zoneName", out zoneName) || !TryGetBool("cache", out shouldCache))
{
throw new InvalidProgramException();
}
var zoneId = new CKRecordZoneID(zoneName, CKContainer.OwnerDefaultName);
ChangedRecords cache;
if (!recordCache.TryGetValue(zoneId, out cache))
{
recordCache [zoneId] = cache = new ChangedRecords();
}
cache.RemoveChanges();
if (!cache.Results.MoreComing && !shouldCache)
{
cache.Reset();
}
CKServerChangeToken changeToken = null;
var token = cache.ChangeToken;
if (token != null && (shouldCache || cache.Results.MoreComing))
{
changeToken = token;
}
// TODO: https://bugzilla.xamarin.com/show_bug.cgi?id=42163
//var operation = new CKFetchRecordChangesOperation (zoneId, changeToken);
var operation = CKFetchRecordChangesOperationFactory.GetOperation(zoneId, changeToken);
operation.DesiredKeys = new string [] { "name", "location" };
operation.ResultsLimit = 2;
operation.RecordChanged = (record) => {
CKRecord cachedRecord = cache.GetRecordById(record.Id);
if (cachedRecord != null)
{
foreach (var key in record.AllKeys())
{
cachedRecord [key] = record [key];
}
cache.MarkRecordAsModified(cachedRecord);
}
else
{
cache.AddRecord(record);
}
};
operation.RecordDeleted = cache.MarkRecordAsDeleted;
var tcs = new TaskCompletionSource <Results> ();
operation.AllChangesReported = (chToken, nsData, nsError) => {
if (nsError == null)
{
cache.ChangeToken = chToken;
cache.SetMoreComing(operation.MoreComing);
}
tcs.SetResult(cache.GetRecords());
};
operation.Start();
return(tcs.Task);
}
