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From "Joshua Watkins (JIRA)" <>
Subject [jira] [Created] (CAMEL-3938) Re-add support for ComsumerType.Simple/JMS SimpleMessageListenerContainer
Date Wed, 04 May 2011 12:01:03 GMT
Re-add support for ComsumerType.Simple/JMS SimpleMessageListenerContainer

                 Key: CAMEL-3938
             Project: Camel
          Issue Type: Improvement
          Components: camel-jms
    Affects Versions: 2.7.0
            Reporter: Joshua Watkins

A while ago there was a discussion topic that the
SimpleMessageListenerContainer/ConsumerType.Simple was removed from
camel-jms as it was deprecated. However from looking at the latest Spring
docs (
ramework/jms/listener/SimpleMessageListenerContainer.html ) it is alive
and kicking.

Is there another reason that this feature was removed?

The reason I am so keen on the SimpleMessageListenerContainer is that the
DefaultMessageListenerContainer does not allow you to constrain the number
of threads used in a useful way. If you give it a task executor with a
maximum 5 threads and want to listen on 10 routes, only 5 of those routes
would be consumed from. There is even a note about this fact in the docs (
java.util.concurrent.Executor) ). This makes the
SimpleMessageListenerContainer invaluable for scaling out an application
using camel-jms.

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