You can always create your own ServerSessionPool with a
ConnectionConsumer in JMS to get control over session level
dispatching with any JMS provider - there's usually a standard way to
do most things you need using the vanilla JMS API.
cheers,
Rob
On 20 Sep 2006, at 17:44, Colin Crist wrote:
James,
Yeah, I'm sure it would be straightforward for a good JMS provider to
support.
My original point was just about how the JMS spec has some
limitations and
threading is one of them. Control is the thing here, in high
performant apps
I really want complete control over threading - I want to create
dispatch
threads, not the provider, and choose which threads handle which
subscriptions from which transports. In fact I want total control
over all
the components I build systems with, not an unreasonable
requirement I'm
sure we'd all agree.
JMS has implicit threading in its model, I just don't believe this
is a good
thing for everyone all the time.
Regards,
Colin.
http://hermesjms.com
-----Original Message-----
From: James Strachan [mailto:[EMAIL PROTECTED]
Sent: 20 September 2006 17:13
To: [email protected]
Subject: Re: QPID/HermesJMS
On 9/19/06, Colin Crist <[EMAIL PROTECTED]> wrote:
One commonly cited one is threading, if anyone has used RV for
example, its model of having dispatch queues (not to be
confused with
transport queues) onto which messages are placed by
listeners (i.e.
subscriptions) totally decouples the subscription from
the final
message callback. This model is very flexible letting
you dispatch
messages from timers as well as transports.
I don't quite follow. Whats to stop a JMS provider dispatching
messages from N transports and M timers to a single JMS
session and
using a single thread or a thread pool to execute the
MessageListener's on the consumers?
Nothing, but its not in the spec so there are no
implementations (that
I know of) that let you.
FWIW it would be trivial to write a little timer Transport
implementation for ActiveMQ which could act as a filter to
any other transport but fire timer events to consumers
whenever it wished to do just what you need etc.
--
James
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http://radio.weblogs.com/0112098/
