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Posted to dev@activemq.apache.org by penny_hu <pe...@126.com> on 2006/11/13 04:04:19 UTC
Qustion about "Broker"!
who could introduce "Broker" for me please? when should i need it?
in the "ProducerAndConsumerTool" example, there is no "Broker"! is it means
that "Broker" is not a requisite for commucation with jms ?
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Re: Qustion about "Broker"!
Posted by penny_hu <pe...@126.com>.
There is another question! I start the borker like this:
BrokerService broker = new BrokerService();
broker.setUseJmx(true);
broker.addConnector("tcp://localhost:61616");
broker.start();
and then I change the url of "ProducerAndConsumerTool" example to
"tcp://localhost:61616" too! it blocks at
"consumer = session.createConsumer(destination)"! there is not any available
exception information. what is problem?
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Re: Qustion about "Broker"!
Posted by Valerie Lavilla <Va...@simulalabs.com>.
It appears the ProducerAndConsumerTool uses an embedded broker by using
"url=vm://localhost" if no broker url is provided as its argument. The
broker is still required but in this case it's using an embedded broker so
you don't have to start broker seperately.
You can checkout
http://incubator.apache.org/activemq/how-do-i-embed-a-broker-inside-a-connection.html
and http://www.activemq.org/site/vm-transport-reference.html for more info
on embeded brokers.
Regards,
Val
----- Original Message -----
From: "penny_hu" <pe...@126.com>
To: <ac...@geronimo.apache.org>
Sent: Monday, November 13, 2006 3:19 PM
Subject: Re: Qustion about "Broker"!
>
> in the "ProducerAndConsumerTool" example, there is no "Broker"! Besides
> the
> "ProducerAndConsumerTool" example does performs very well , when the
> "Broker" example does not run.
> is it means that "Broker" is not a requisite for commucation with jms ? or
> is it because of "url=vm://localhost" in "ProducerAndConsumerTool" ?
>
>
> --
> View this message in context:
> http://www.nabble.com/Qustion-about-%22Broker%22%21-tf2619683.html#a7312469
> Sent from the ActiveMQ - Dev mailing list archive at Nabble.com.
>
>
Re: Qustion about "Broker"!
Posted by penny_hu <pe...@126.com>.
in the "ProducerAndConsumerTool" example, there is no "Broker"! Besides the
"ProducerAndConsumerTool" example does performs very well , when the
"Broker" example does not run.
is it means that "Broker" is not a requisite for commucation with jms ? or
is it because of "url=vm://localhost" in "ProducerAndConsumerTool" ?
--
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Re: Qustion about "Broker"!
Posted by James Strachan <ja...@gmail.com>.
On 11/14/06, penny_hu <pe...@126.com> wrote:
>
> I have solved the problem , thank you for your help!
What was it?
--
James
-------
http://radio.weblogs.com/0112098/
Re: Qustion about "Broker"!
Posted by penny_hu <pe...@126.com>.
I have solved the problem , thank you for your help!
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Re: Qustion about "Broker"!
Posted by Valerie Lavilla <Va...@simulalabs.com>.
----- Original Message -----
From: "penny_hu" <pe...@126.com>
To: <ac...@geronimo.apache.org>
Sent: Monday, November 13, 2006 11:04 AM
Subject: Qustion about "Broker"!
>
> who could introduce "Broker" for me please? when should i need it?
JMS broker is basically a JMS server. It's a physical component that handles
the communication between clients. Instead of communicating with each other,
clients communicate only with the message broker. A client sends a message
to the message broker, providing the logical name of the receivers. The
message broker looks up client registered under the logical name and then
passes the message to them.
>
> in the "ProducerAndConsumerTool" example, there is no "Broker"! is it
> means
> that "Broker" is not a requisite for commucation with jms ?
In the producer/consumer example, you must run the broker first (that is by
running activemq) before running the producer and consumer.
You can read more about JMS here: http://java.sun.com/products/jms/tutorial/
HTH,
Val
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>
>