A ServerSession object is an application server object that
is used by a server to associate a thread with a JMS session (optional).
A ServerSession implements two methods:
getSession - returns the ServerSession's
JMS session.
start - starts the execution of the
ServerSession
thread and results in the execution of the JMS session's
run method.
A ConnectionConsumer implemented by a JMS provider uses a
ServerSession to process one or more messages that have
arrived. It does this by getting a ServerSession from the
ConnectionConsumer's ServerSessionPool; getting
the ServerSession's JMS session; loading it with the messages;
and then starting the ServerSession.
In most cases the ServerSession will register some object
it provides as the ServerSession's thread run object. The
ServerSession's start method will call the
thread's start method, which will start the new thread, and
from it, call the run method of the
ServerSession's run object. This object will do some
housekeeping and then call the Session's run
method. When run returns, the ServerSession's run
object can return the ServerSession to the
ServerSessionPool, and the cycle starts again.
Note that the JMS API does not architect how the
ConnectionConsumer loads the Session with
messages. Since both the ConnectionConsumer and
Session are implemented by the same JMS provider, they can
accomplish the load using a private mechanism.
See Also: javax.jms.ServerSessionPool
See Also: javax.jms.ConnectionConsumer |