HOWTO: Using OpenJMS with Orion

[Lipsky, Jon]

Hello all,

 

My developers have been fighting with the JMS implentation in Orion so I decided to play around with getting one of the open source JMS implentation to work with Orion.  At the bottom of this email are the steps to get OpenJMS working and the changes you need to make to your applications to use it.

 

I havn't been able to test it too much, but in our limited tests everything seems to work.  So far, all of the problems that we were having with Orion's JMS implementation have gone away so this at least meets our short term needs until Orion's JMS is working (hopefully soon)...

 

Regards,

Jon Lipsky

 

 

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Using OpenJMS with Orion

 

1. Download OpenJMS from http://www.openjms.org

 

2. Extract the OpenJMS archive on your machine and follow the intructions for building OpenJMS.
     (execute the command "build all")

 

3. Copy the following files to your /lib directory your Orion installation:
     ${OPENJMS_HOME}/dist/openjms-0.5.jar
     ${OPENJMS_HOME}/dist/openjms-client-0.5.jar
     ${OPENJMS_HOME}/dist/openjms-rmi-0.5.jar
     ${OPENJMS_HOME}/lib/log4j.jar
     ${OPENJMS_HOME}/lib/exolabcore-0.1.jar
     ${OPENJMS_HOME}/lib/jakarta-regexp-1.1.jar
     ${OPENJMS_HOME}/lib/tyrex-0.9.6.1.jar

 

4. Start the OpenJMS server
 (execute the command "admin -config valid_jms.xml", and then use the menu item "Start OpenJMSServer")

 

5. Create any Queue's or Topic's you want to use in your application using the admin application.

 

6. Modify your applications to use a different context factory to when they create their JMS connection factories:

 

 Hashtable props = new Hashtable();
 props.put(Context.INITIAL_CONTEXT_FACTORY, "org.exolab.jms.jndi.rmi.RmiJndiInitialContextFactory");
 Context context = new InitialContext(props);

 

7. By default the Queue connection factory can be found at the JNDI name "JmsQueueConnectionFactory",
   so your may need to change your application or the change the JNDI location used by OpenJMS:

 

 QueueConnectionFactory _factory = (QueueConnectionFactory)context.lookup("JmsQueueConnectionFactory");