Re: Synchronous "Are you there?" using JMS

2007-08-02 Thread uma_rk
Hi, I just need to be able to ping a functional component from another functional component in a distributed application synchronously. How can this be accomplished using JMS? It appears its not straightforward? Thanks, /U -- Original message -- From: "Mario Si

Re: Synchronous "Are you there?" using JMS

2007-08-02 Thread Mario Siegenthaler
Just a thought, but why don't you use a topic for this? I think a queue will cause problems because the message will be stored. So the "I'm here" thing would possibly refer to an older question and would no longer be relevant. Hm, just reread your question, and realized that you directly want to pr

Synchronous "Are you there?" using JMS

2007-08-02 Thread uma_rk
I have two entities on either side of a queue. Entity A needs to do a synchronous "are you there?" on the queue and receive a response synchronously from Entity B. I thought I'd do this: - Define a Queue "Are you there" and dispatchAsync = false - create a session with CLIENT_ACK set - sen

Why my ACTIVEMQ_ACKS table stays empty?

2007-08-02 Thread Qian Su
Hi, We are using ActiveMQ 4.1.1 with journaledJDBCPersistence and our datasource is MySQL 5.0.29. We have verified that messages can be successfully sent and consumed whether producers and consumers are concurrently available. However, one thing I noticed is that ACTIVEMQ_ACKS table seems to neve