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From Bruce Snyder <>
Subject Re: need a listener?
Date Fri, 28 Aug 2009 01:36:57 GMT
On Wed, Aug 26, 2009 at 1:59 PM, vezee<> wrote:
> Similiar to Biztalk, can AMQ post messages from Q directly to a webservice
> withour our writing any listener or consumer code?

This is something that can easily be achieved with Apache Camel. If I
recall correctly, the camel-http component can send to a web service
very easily.

> when the doc says AM-Q "processess" a message... what exactly is it doing
> apart from holding the message in the Q/topic similiar to a DB?

ActiveMQ tracks the messages that the broker receives so that it can
fulfill the correct delivery, redelivery, etc. according to the JMS
spec, it handles and stores messages differently according to whether
queues or topics are being used, it persists and recovers messages
according to the persistent store configuration.

> It boils down to ... how AM-Q different from any regular DB since in both
> cases we are writing our own producer and consumer logic?

JMS is vastly different from a database. If you're not familiar with
JMS, I suggest taking a look at the JMS spec.

perl -e 'print unpack("u30","D0G)U8V4\@4VYY9&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*"

ActiveMQ in Action:

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