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From "Christian Burger (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQ-1551) ActiveMQ as foreign JMS provider to BEA WLS 8.1/10
Date Thu, 17 Jan 2008 08:16:45 GMT
ActiveMQ as foreign JMS provider to BEA WLS 8.1/10
--------------------------------------------------

                 Key: AMQ-1551
                 URL: https://issues.apache.org/activemq/browse/AMQ-1551
             Project: ActiveMQ
          Issue Type: Bug
    Affects Versions: 4.1.1
         Environment: BEA WLS 8.1/10
SuSE SLES 9
            Reporter: Christian Burger


During evaluation of ActiveMQ we found incompatibilties┬┤of MQ with BEA WLS 8.1 and WLS 10.
We contacted the BEA support - they where investigating and pinpointed the problem:

Hello ,

This is regarding your support case ABCDEF titled Need help in configuring message bridge
with ActiveMQ. Here I am with the response from the next level of support team on the following
NullPointerException that I am getting while configuring a message bridge with WLS. It is
observed that even other customers are also observing the same exception while configuring
a message bridge with ActiveMQ.

<AdminServer> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'>
<<anonymous>> <> <> <1197983909603> <BEA-000000> <Exception:
javax.jms.JMSException: java.lang.NullPointerException
at org.apache.activemq.util.JMSExceptionSupport.create(JMSExceptionSupport.java:46)
at org.apache.activemq.ActiveMQConnection.syncSendPacket(ActiveMQConnection.java:1181)
at org.apache.activemq.ActiveMQSession.send(ActiveMQSession.java:1551)
at org.apache.activemq.ActiveMQMessageProducer.send(ActiveMQMessageProducer.java:465)
at org.apache.activemq.ActiveMQMessageProducer.send(ActiveMQMessageProducer.java:356)
at weblogic.jms.adapter.JMSBaseConnection.sendInternal(JMSBaseConnection.java:794)
at weblogic.jms.adapter.JMSBaseConnection.access$200(JMSBaseConnection.java:84)
at weblogic.jms.adapter.JMSBaseConnection$6.run(JMSBaseConnection.java:707)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
at weblogic.security.service.SecurityManager.runAs(Unknown Source)
at weblogic.jms.adapter.JMSBaseConnection.send(JMSBaseConnection.java:704)


It is confirmed that this is not an issue with WLS, but Active MQ not setting the JMS Destination
after the message is sent. As per the JMS specification, it states that the JMSDestination
should be set AFTER the message is sent. In the case of a client contacting weblogic, this
should be the wlclient.jar classes, as these are used to handle the connection; in the case
of wls -> wls via messaging bridge, it will still be the same classes, although these will
embedded within the JMS server.

In the case of WLS -> ActiveMQ via a messaging bridge, the messaging bridge will create
a connection to ActiveMQ using the ActiveMQ client classes. The messaging bridge won't be
able to set the JMSDestination, because it can't be done after the message is sent. It can
be done by either the ActiveMQ client classes or the ActiveMQ JMS server, becasue these will
handle the post send method methods.


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