Hi,
I had the same problem, but with queue-connection-factory. It works for the
very first time, but if you stop Orion and restart, the connection.start()
gives NullPointerException. To me, it looks like Orion has problems
rebinding the configured factories, if the factory exists already, the NPE
is thrown when client tries to start the connection.
Now, if I remove the queue-connection-factory tag from jms.xml and restart -
the JMS access client starts work perfectly (yes, it's no longer configured
into jms.xml, but it works anyway). I am not that familiar with Orion, I
don't know where orion actually stores the binding for JMS factory class,
but it really looks like there is something odd there.
As Orion doesn't produce any kind of debug log (or is there a hidden
option?), tracking down things like this is really difficult. Especially in
this case, where it looks like the connection factory lookup() is OK, it
just fails when starting it.
Jarno
-----Original Message-----
From: Matt Simmerson [mailto:[EMAIL PROTECTED]]
Sent: 1. maaliskuuta 2001 16:19
To: Orion-Interest
Subject: java.lang.NullPointerException in JMS
Hi
I've created my own topic-connection-factory and own topic in jms.xml
<topic-connection-factory host="172.16.61.1"
location="jms/LoggerTopicConnectionFactory" port="9127"/>
<topic name="ApplicationLoggerTopic" location="jms/appLoggerTopic">
<description>JMS Logger</description>
</topic>
I have referenced these in my application-client.xml as
<application-client>
<display-name>App Logger</display-name>
<resource-ref>
<res-ref-name>jms/LoggerTopicConnectionFactory</res-ref-name>
<res-type>javax.jms.TopicConnectionFactory</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<resource-ref>
<res-ref-name>jms/ApplicationLoggerTopic</res-ref-name>
<res-type>javax.jms.Topic</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</application-client>
I reference these in my code, and print out the topic name which display
"Demo Topic" !!!
TopicConnectionFactory connFactory = (TopicConnectionFactory)new
InitialContext().lookup("java:comp/env/jms/LoggerTopicConnectionFactory");
this.connection = connFactory.createTopicConnection();
this.loggerTopic = (Topic)new
InitialContext().lookup("java:comp/env/jms/ApplicationLoggerTopic");
When the code executes connection.start() I get the following error.
java.lang.NullPointerException
at java.io.DataOutputStream.writeUTF(DataOutputStream.java:329)
at java.io.DataOutputStream.writeUTF(DataOutputStream.java:306)
at com.evermind.server.jms.cj.<init>(JAX)
at com.evermind.server.jms.b8.start(JAX)
at
AppLogger.LoggerListeners.JMSLoggerSubscriber.initSubscriber(JMSLogge
rSubscriber.java:116)
at
AppLogger.LoggerListeners.JMSLoggerSubscriber.<init>(JMSLoggerSubscri
ber.java:76)
at
AppLogger.LoggerListeners.JMSLoggerSubscriber.main(JMSLoggerSubscribe
r.java:33)
Has anyone any idea what I've missed, or know how to resolve this.
Cheers
Matt
Matt Simmerson
IT Consultant
smart421 - Smart solutions for the 21st century
http://www.smart421.com
Wap Site: wap.smart421.com
Tel: 01473 408720
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