I have a process where I am consuming a message on a "status" queue. I make
connection to an ActiveMQ server, create a session, create a consumer to
"status" with a JMSCorrelationID set, start the connection and receive a
message.
Apache.NMS.IConnectionFactory factory = new
Apache.NMS.ActiveMQ.ConnectionFactory(url);
Apache.NMS.IConnection connection = factory.CreateConnection();
sessionConsume =
connection.CreateSession(Apache.NMS.AcknowledgementMode.AutoAcknowledge);
Apache.NMS.IDestination sourceQueue = sessionConsume.GetQueue("status");
string filter = string.Format("JMSCorrelationID='{0}'", correlationID);
Apache.NMS.IMessageConsumer consumer =
sessionConsume.CreateConsumer(sourceQueue,filter, true);
connection.Start();
Apache.NMS.ITextMessage message = consumer.Receive(new TimeSpan(0, 0,
ccMessageWait)) as Apache.NMS.ITextMessage;
if (message != null)
{
//do something with the message
}
This works great. When there is no message there, however, I want it to check a
2nd queue. And here is where this gets unstuck.
if (message != null)
{
//do somethign with the message
} else
{
//Stop the current Connection, before opening again for OBQ
//consumer.Close();
//consumer.Dispose();
//sourceQueue.Dispose();
//connection.Stop();
sourceQueue = sessionConsume.GetQueue("other");
consumer = sessionConsume.CreateConsumer(sourceQueue, filter, true);
connection.Start();
message = consumer.Receive(new TimeSpan(0, 0, ccMessageWait)) as
Apache.NMS.ITextMessage;
if (message != null)
{
///ideally there's a message here.....but alas.
}
}
I've tried creating whole new connections, new consumers, new queue object
(IDestination), I've tried stopping connection, then starting connection,
disposing consumers etc.
Basically I want to connect to "status" queue for that CorrelationID, and if
nothing there, disconnect and connect to "other" queue, and expect to find a
message there.
Regards
David
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