Hi all, I need to understand if it is possible to create new
ClientConsumer/MessageConsumer, each with their associated
MessageHandler/MessageListener, after i already created consumers in the same
way and they started receiving data. Basically i have a topic which will
receive data updates for a large number of items with an id identifying them.
My application will be composed of multiple instances, each one subscribing to
updates on a different set of items (using filters) and that set is not fixed
nor is predictable when a new item will need to be subscribed: could be at
startup or hours later. So at any time i could need to call createConsumer in a
session, particularly when async listeners have already started receiving
messages on onMessage. Creating new sessions is problematic, as the number of
items subscribed on each instance could be on the hundreds. Regarding that,
core ClientConsumer setMessageHandler states that: Note that setting a handler
dedicates the parent session, and its child producers and consumers, to the
session-wide handler delivery thread of control. Would this thread being the
one on which onMessage is called? In that case even if is not that clean, i
could process creating new consumers inside of that callback? Or i am forced to
synchronize the onMessage with the separate part where i create the new
consumer? I tried to understand from JMS only documentation and discussions if
there is a way to do this, but multi threading limitations on session seems not
giving me a lot of options . Thanks, Gianluca Milza
