public TableEventSubscription Add(ITable table, object action, Func <IDisposable> subscription)
{
lock (_lock)
{
var exists = _subscriptions.FirstOrDefault(t => t.Table == table && t.Action == action);
if (exists == null)
{
exists = new EventSub(table, action, subscription.Invoke());
_subscriptions.Add(exists);
ObserverCount++;
_hasObservers.OnNext(ObserverCount != 0);
}
return(new TableEventSubscription(this, exists));
}
}
internal TableEventSubscription(SubscriptionManager subscriptionManager, EventSub eventSub)
{
_subscriptionManager = subscriptionManager;
_eventSub = eventSub;
}
