/// <summary>
/// Dequeue Message
/// </summary>
/// <returns></returns>
public virtual IQueueItem Dequeue(Priority priority)
{
Ptr ptr = Ptr.Empty;
try
{
//using (TransactionScope tran = new TransactionScope())
//{
switch (priority)
{
case Priority.Normal:
if (normalQ.TryDequeue(out ptr))
{
return(DequeueScop(ptr));
}
break;
case Priority.Medium:
if (mediumQ.TryDequeue(out ptr))
{
return(DequeueScop(ptr));
}
break;
case Priority.High:
if (highQ.TryDequeue(out ptr))
{
return(DequeueScop(ptr));
}
break;
}
return(null);
//if (ptr.IsEmpty)
//{
// return GetFirstItem();
//}
//else
//{
// return DequeueScop(ptr);
//}
//if (item == null)
//{
// item = Dequeue(priority);
//}
//}
}
catch (Exception ex)
{
QLogger.Exception("PriorityQueue Dequeue error ", ex);
}
return(null);
}
/// <summary>
/// Dequeue Message
/// </summary>
/// <returns></returns>
public virtual IQueueItem Dequeue()
{
Ptr ptr = Ptr.Empty;
try
{
//using (TransactionScope tran = new TransactionScope())
//{
if (highQ.TryDequeue(out ptr))
{
return(DequeueScop(ptr));
}
else if (mediumQ.TryDequeue(out ptr))
{
return(DequeueScop(ptr));
}
else if (normalQ.TryDequeue(out ptr))
{
return(DequeueScop(ptr));
}
else
{
return(null);
}
//changed:syncCount:
//if (ptr == Guid.Empty)
// ptr = mediumQ.Dequeue();
//else if (ptr == Guid.Empty)
// ptr = normalQ.Dequeue();
//if (ptr.IsEmpty)
//{
// return GetFirstItem();
//}
//else
//{
// return DequeueScop(ptr);
//}
//if (item == null)
//{
// Thread.Sleep(300);
// return Dequeue();
//}
//}
}
catch (Exception ex)
{
QLogger.Exception("PriorityQueue Dequeue error ", ex);
}
return(null);
}
/// <summary>
/// Dequeue Message
/// </summary>
/// <returns></returns>
public virtual IQueueItem Dequeue(Ptr ptr)
{
try
{
return(DequeueScop(ptr));
}
catch (TransactionAbortedException tex)
{
QLogger.Exception("PriorityQueue Dequeue error ", tex);
}
catch (Exception ex)
{
QLogger.Exception("PriorityQueue Dequeue error ", ex);
}
return(null);
}
/// <summary>
/// Dequeue Message
/// </summary>
/// <returns></returns>
public virtual bool TryDequeue(out IQueueItem item)
{
Ptr ptr = Ptr.Empty;
try
{
//using (TransactionScope tran = new TransactionScope())
//{
if (highQ.TryDequeue(out ptr))
{
item = DequeueScop(ptr);
return(item != null);
}
else if (mediumQ.TryDequeue(out ptr))
{
item = DequeueScop(ptr);
return(item != null);
}
else if (normalQ.TryDequeue(out ptr))
{
item = DequeueScop(ptr);
return(item != null);
}
else
{
item = null;
return(false);
}
//}
}
catch (Exception ex)
{
QLogger.Exception("PriorityQueue Dequeue error ", ex);
}
item = null;
return(false);
}
