J2EE 1.4 + EJB 3: how to mix

[bill.burke]

Yes. EJB 2.1 style beans(not EJB 2.1 Entity Beans) are supported in an EJB 3.0 deployment. You can still use and deploy EJB 2.1 deployments.

Let us know what problems you encounter.

[mig]

I am having problems with this. Please, see the topic I created:
http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3998528#3998528

Thanks you for any replies.

[ajay662]

We are in the same situation. Have been using EJB 2.1 SLSB and MDB for a while on jboss 4.0.5. Now we want to use ejb3 for new development. Are there any guidelines on how to deploy a mix of two.

Should we use "ejb3" configuration from jboss 4.0.5 installation if we want to mix the two?

Do ejb 2.1 and ejb3 beans need to be in separate jars? can they be in the same ear?

I tried by installing "ejb3" configuration off jboss 4.0.5 and deploying my old ejb2.1 jar/ear under it. Quick testing showed no problem.

Then I tried adding a sample ejb3 SLSB to the same jar/ear and deploying is giving following error..

10:19:14,196 WARN [ServiceController] Problem creating service jboss.j2ee:service=EJB3,module=MyApp.jar
java.lang.NoSuchMethodException: com.mycompany.enms.cluster.ClusterManagerBean.remove()
 at java.lang.Class.getMethod(Class.java:1581)
 at org.jboss.ejb3.Ejb3DescriptorHandler.addAnnotations(Ejb3DescriptorHandler.java:1800)
 at org.jboss.ejb3.Ejb3DescriptorHandler.addSecurityAnnotations(Ejb3DescriptorHandler.java:770)
 at org.jboss.ejb3.Ejb3DescriptorHandler.addDescriptorAnnotations(Ejb3DescriptorHandler.java:613)
 at org.jboss.ejb3.Ejb3DescriptorHandler.getStatelessContainer(Ejb3DescriptorHandler.java:309)
 at org.jboss.ejb3.Ejb3AnnotationHandler.getContainers(Ejb3AnnotationHandler.java:130)
 at org.jboss.ejb3.Ejb3Deployment.deployElement(Ejb3Deployment.java:409)
 at org.jboss.ejb3.Ejb3Deployment.deployElement(Ejb3Deployment.java:397)
 at org.jboss.ejb3.Ejb3Deployment.deployUrl(Ejb3Deployment.java:378)
....
....

[mig]

The EJB3s have to be in a separate jar files. According to other forums, these jars may be placed within the same ear.
Cheers.

[ajay662]

Beautiful. Thanks. Separate jars (inside same ear) fixed the deployment issues. Now on to the next challenge of cross-referencing each other.