public int RegisterOnOrderStatusChange(int id)
{
IStockServiceCallback callback = OperationContext.Current.GetCallbackChannel <IStockServiceCallback>();
Console.WriteLine("Someone registered for an order status change!");
using (StockServiceModelContainer database = new StockServiceModelContainer())
{
StockOrder order = database.StockOrders.Find(id);
if (order == null)
{
throw new FaultException <OrderNotFoundFault>(new OrderNotFoundFault(id));
}
int callbackId = Interlocked.Increment(ref this.LastCallbackId);
this.CallbacksIds.Add(callbackId, callback);
if (this.OnOrderStatusChangeCallbacks.ContainsKey(id) == false)
{
this.OnOrderStatusChangeCallbacks[id] = new HashSet <IStockServiceCallback>();
}
this.OnOrderStatusChangeCallbacks[id].Add(callback);
return(callbackId);
}
}
public void UnregisterOnNewOrder(int callbackId)
{
if (this.CallbacksIds.ContainsKey(callbackId))
{
IStockServiceCallback callback = this.CallbacksIds[callbackId];
if (this.OnNewOrderCallbacks.Contains(callback))
{
this.OnNewOrderCallbacks.Remove(callback);
}
}
}
public int RegisterOnNewOrder()
{
IStockServiceCallback callback = OperationContext.Current.GetCallbackChannel <IStockServiceCallback>();
Console.WriteLine("Someone registered for a new order!");
int callbackId = Interlocked.Increment(ref this.LastCallbackId);
this.CallbacksIds.Add(callbackId, callback);
this.OnNewOrderCallbacks.Add(callback);
return(callbackId);
}
public void UnregisterOnOrderStatusChange(int orderId, int callbackId)
{
if (this.CallbacksIds.ContainsKey(callbackId))
{
IStockServiceCallback callback = this.CallbacksIds[callbackId];
IEnumerable <HashSet <IStockServiceCallback> > statusChangeCallbacks = this.OnOrderStatusChangeCallbacks.Values
.Where(callbacks => callbacks.Contains(callback));
foreach (HashSet <IStockServiceCallback> callbacks in statusChangeCallbacks)
{
callbacks.Remove(callback);
}
}
}
