Hello, I tried the Advisory Topics, but somehow I can not manage to get any advisory messages...
I have tested this with a small test server I have found here: http://coenraets.org/blog/2007/01/flex-test-drive-server-for-java-developers-tomcat-based/ This is a piece of code where I tried to set up a consumer for the advisory messages: ActiveMQDestination topic = (ActiveMQDestination) context.lookup("ChatTopic"); Destination advisoryDestination = AdvisorySupport.getConsumerAdvisoryTopic(topic); MessageConsumer consumer = session.createConsumer(advisoryDestination); Then I tried to connect some consumers to the topic "ChatTopic", but I never get an advisory message. Can you tell me what is wrong? Is there maybe some kind of example or tutorial on how to do this? Cheers, beaker James.Strachan wrote: > > 2008/5/8 beaker <[EMAIL PROTECTED]>: >> >> Hello, >> >> is it possible for a producer to detect, if there are any consumers on >> the >> topic/queue he is sending? > > Yes - you can use advisories... > http://activemq.apache.org/advisory-message.html > > e.g. try using the ConsumerEventSource helper class... > http://activemq.apache.org/maven/activemq-core/apidocs/org/apache/activemq/advisory/ConsumerEventSource.html > >> I want the producer to only send out messages, if there is someone >> listening >> for them. > > We could maybe enhance the JMS client so that it can avoid sending > messages to topics which have no consumers (i.e. to reduce the cost of > marshalling the message on the wire and sending it to the broker and > the broker consuming it). > > -- > James > ------- > http://macstrac.blogspot.com/ > > Open Source Integration > http://open.iona.com > > -- View this message in context: http://www.nabble.com/Detect-consumers--tp17126905s2354p17311984.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.
