Jonas

[Arijit Ghosh]

Any pointers for this Application Server ? How does it compare with JBOSS ? Does this have proper documentation and some good Admin interface ?
Has anyone used this for a real live project ? What is its stablity ?
Is it totally free ? Including the documentation ? Unlike JBOSS !!

[Tim Holloway]

I run JOnAS. They have a newsgroup, BTW that's good for such questions.
JOnAS is 100% free, including the documentation. Supposedly it performs relatively well compared to JBoss, partly because JBoss does an extremely late binding to the EJB container. Conversely, JBoss comes up much faster.
Until recently, JBoss was probably easier to work with in an appserver environment, as you can download it prepackages with Tomcat or one of the other JSP/servlet servers whose name I should be able to remember and can't. The latest JOnAS is getting better about such things, but still lags.
I originally got started with JOnAS because it was ready to run when JBoss (or EJBoss as it was known back then) was still under early development. Because probably the bulk of the people who ask me about my EJBWizard tool are JBoss users, I've periodically looked at converting, but I run multiple virtual hosts, and unless things have changed recently, JBoss/Tomcat can't handle that, while JOnAS/Tomcat can.

[Arijit Ghosh]

Thanks Tim. What is this EJBWizard tool ? Jboss was supposed to have it in earlier versions but for some strange reasons removed it in later versions. I don't think its present even in its latest release -- ver 3.0

[Arijit Ghosh]

Hi,
When I run Jonas it says running on RMI. Implications ? What does it mean ?
Does it mean I can have RMI-IIOP connections apart form HTTP connections ?

How can I run the JAdmin tool ? I have edited the tomcat-user page....
So the JAdmin initial page comes in. However, when I try to login (with correct Username and Password), it gives me the following error ---

Error: 500
Location: /jadmin/servlet/ManagementService
Internal Servlet Error:
java.lang.NullPointerException
at java.lang.ClassLoader.resolveClass0(Native Method)
at java.lang.ClassLoader.resolveClass(ClassLoader.java:641)
at org.apache.tomcat.loader.AdaptiveClassLoader.loadClass(AdaptiveClassLoader.java:430)
at org.apache.tomcat.loader.AdaptiveServletLoader.loadClass(AdaptiveServletLoader.java:174)
at org.apache.tomcat.core.ServletWrapper.loadServlet(ServletWrapper.java:265)
at org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:289)
at org.apache.tomcat.core.Handler.service(Handler.java:254)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:536)

  

Can anyone help ?

Also when I was trying to run the first example in the SB directory, ClassCastException was shown.
Is the solution lies including "ejb-jar.???" file in the classpath ? What is the location of this file ? I could not find it.

Thanks in advance.

[Arijit Ghosh]

Ok I could run the SB example perfectly...
Any response for the other problem ?

[Tim Holloway]

If the EJBWizard was supplied with a version of JBoss, it's news to me! I wrote it! The official site is http://www.mousetech.com/EJBWizard.html and the latest trustworthy release is the Beta one, though I need to correct the package names in the sample scripts (older releases were packaged in org.objectweb.jonas.ejbwizard and as of V3.5, it changed to com.mousetech.ejbwizard).
As for the "Running on RMI" message - you have a choice of 2 different RMI servers - the vanilla "RMI" or "Jeremie". Jeremie's supposed to offer better performance. You might want to read their docs on the difference.
Each has its own server JAR file in the lib directory. Which one is used is determined by the jonas.properties file.

[Arijit Ghosh]

Thanks Tim. I was trying to mean that Jboss had its own wizard tool. Not yours. Which of course they discontinued.
What about the other problem, Tim ? How can I run Jadmin ? Is there any package released which has Tomcat integrated with it as in JBOSS ?