Hi,
I have been reading the JMS 2.0 public draft specification and some
question about the scope of shared non-durable and durable subscriptions.
1. Can a given durable subscription be used on more than one Connection
(assuming no clientID's are set)? If so, can this be at the same time?
The spec states "A durable subscription may have more than one active
consumer (this was not permitted prior to JMS 2.0). Each message from
the subscription will be delivered to only one of the consumers on that
subscription." What I am asking is: do the active consumers have to be
created on the same Connection or can they be created on different
Connections? And (a weaker question): once the active consumer(s)
created on one Connection have been closed, is it then possible to
subsequently to create further consumers on another Connection for the
same durable subscription?
2. Same questions for shared non-durable subscriptions. The spec says "A
non-durable shared subscription is used by a client which needs to be
able to share the work of receiving messages from a topic subscription
amongst multiple consumers.". So my question is whether those consumers
can be created on multiple Connections. This really amounts to asking
whether the name of the shared non-durable subscription is *scoped to a
Connection* or *global*.
The answers to these questions (especially the last one) have quite
far-reaching implications for JMS provider implementations.
Thanks,
Chris Barrow