JBoss-6.1.0 Final - EJB3 Timer Service: org.hibernate.hql.ast.HqlToken cannot be cast to antlr.Token

[sellis1]

We are getting a Hibernate exception when using EJB3. JBoss 6.1.0 will start up the Timer Service if it detects a deployment of an ejb with version 3. The reason for the exception is that our application packages an older version of Hibernate which conflicts with the version of hibernate used by common/deploy/jboss-ejb3-timerservice-mk2.jar. We do have classloader isolation enabled in the application.

Is there a workaround to this problem like disabling the EJB 3 Timer Service? The application does not use EJB Timers. If it's possible, how do you disable the EJB 3 Timer Service?

We are also looking at upgrading our version of Hibernate, but I'm hoping that there is another possibility to limit the scope of our testing. Thanks for your help.

DEPLOYMENTS IN ERROR:

  Deployment "jboss.j2ee:ear=PS.ear,jar=dispatcher.jar,name=ECommandExecutor,service=EJB3" is in error due to the following reason(s): java.lang.ClassCastException: org.hibernate.hql.ast.HqlToken cannot be cast to antlr.Token

    at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:1228) [:2.2.2.GA]

    at org.jboss.deployers.plugins.main.MainDeployerImpl.checkComplete(MainDeployerImpl.java:905) [:2.2.2.GA]

    at org.jboss.system.server.profileservice.deployers.MainDeployerPlugin.checkComplete(MainDeployerPlugin.java:87) [:6.1.0.Final]

    at org.jboss.profileservice.deployment.ProfileDeployerPluginRegistry.checkAllComplete(ProfileDeployerPluginRegistry.java:107) [:0.2.2]

    at org.jboss.system.server.profileservice.bootstrap.BasicProfileServiceBootstrap.start(BasicProfileServiceBootstrap.java:135) [:6.1.0.Final]

    at org.jboss.system.server.profileservice.bootstrap.BasicProfileServiceBootstrap.start(BasicProfileServiceBootstrap.java:56) [:6.1.0.Final]

    at org.jboss.bootstrap.impl.base.server.AbstractServer.startBootstraps(AbstractServer.java:827) [jboss-bootstrap-impl-base.jar:2.1.0-alpha-6]

    at org.jboss.bootstrap.impl.base.server.AbstractServer$StartServerTask.run(AbstractServer.java:417) [jboss-bootstrap-impl-base.jar:2.1.0-alpha-6]

    at java.lang.Thread.run(Thread.java:662) [:1.6.0_41]

[wdfink]

Have a look to JBoss 6.x Tuning/Slimming there is a description how to configure the timer to not use any persistence.

[sellis1]

Thanks, but the instructions are for EJB 2.x timers. I configured the EJB 2 timer to not use any persistence, but I still got the same error. It looks like with JBoss 6.1.0 that the EJB 3 Timers are deployed in common/deploy/jboss-ejb3-timerservice-mk2.jar. I didn't see a way to configure the EJB 3 timer to disable persistence.

I found the source code for jboss-ejb3-timerservice-mk2 at https://github.com/jbossejb3/jboss-ejb3-timerservice.git and commented out the construction of the hibernate query. That worked, but I'm looking for another solution where I can disable the EJB 3 timer.