public void EnumerateChanges(INSFileProviderChangeObserver observer, NSData syncAnchor)
{
try
{
FileMetadata metadata = storageManager.GetFileMetadata(this.EnumeratedItemIdentifier);
if (!metadata.IsExists)
{
observer.DidDeleteItems(new[] { EnumeratedItemIdentifier });
observer.FinishEnumeratingChanges(this.GetNsDataFromUint(this.SyncAnchor++), false);
return;
}
observer.DidUpdateItems(new[] { ProviderItem.CreateFromMetadata(metadata) });
observer.FinishEnumeratingChanges(this.GetNsDataFromUint(this.SyncAnchor++), false);
}
catch (UnauthorizedException)
{
observer.FinishEnumerating(NSFileProviderErrorFactory.CreatesNotAuthenticatedError());
}
catch (WebDavHttpException)
{
observer.FinishEnumerating(NSErrorFactory.CreateUnspecifiedNetworkError());
}
catch (Exception)
{
observer.FinishEnumerating(NSErrorFactory.CreateUnspecifiedError());
}
}
public void EnumerateChanges(INSFileProviderChangeObserver observer, NSData syncAnchor)
{
uint anchor = GetAnchorFromNsData(syncAnchor);
try
{
FolderMetadata metadata = storageManager.GetFolderMetadata(this.enumeratedItemIdentifier);
if (!metadata.IsExists)
{
observer.FinishEnumerating(NSFileProviderErrorFactory.CreateNonExistentItemError(enumeratedItemIdentifier));
return;
}
ItemMetadata[] metadatas = this.storageManager.GetFolderChildrenMetadatas(metadata);
ChangeSet diff = this.synchronizationSimulator.GetDiff(anchor, metadatas);
observer.DidDeleteItems(diff.DeletedId);
INSFileProviderItem[] updatedItems = ProviderItem.CreateFromMetadatas(diff.Updated);
observer.DidUpdateItems(updatedItems);
this.SyncAnchor = this.synchronizationSimulator.AddChangeSet(metadatas);
observer.FinishEnumeratingChanges(this.GetCurrentAnchorNsData(this.SyncAnchor), false);
}
catch (UnauthorizedException)
{
observer.FinishEnumerating(NSFileProviderErrorFactory.CreatesNotAuthenticatedError());
}
catch (WebDavHttpException)
{
observer.FinishEnumerating(NSErrorFactory.CreateUnspecifiedNetworkError());
}
catch (Exception)
{
observer.FinishEnumerating(NSErrorFactory.CreateUnspecifiedError());
}
}