how to deploy a service pojo depending on ejb timer

[mldv]

I’m new to EJB3 and I’ve the following problem.

I’m using jboss5.eap.

I have a service POJO (annotated with org.jboss.ejb3.annotation.Depends, org.jboss.ejb3.annotation.Service, javax.ejb.Local:

@Service

@Local(MyInterfaceService.class)

@Depends(“EJB Global JNDI name”)

public class MyService implements MyInterfaceService {

and I want to access a stateless EJB from the create() method of this Service POJO.

      @EJB

      private ITimer myEJBTimer;

My EJB is a multiple Timer Object using the TimerService object.

Deploying I get the following warning and errors:

2010-06-23 13:03:04,080 WARN  [org.jboss.injection.EJBRemoteHandler] (main) EJBTHREE-1828: EJBInjectionContainer jboss.j2ee:ear=ear-name.ear,jar=jarname.jar,name=MyService,service=EJB3 is unconfigured, using legacy resolve

2010-06-23 13:03:04,502 ERROR [org.jboss.system.server.profileservice.ProfileServiceBootstrap] (main) Failed to load profile: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS):

DEPLOYMENTS MISSING DEPENDENCIES:

  Deployment "jboss.j2ee:ear= ear-name.ear,jar= jarname.jar,name= MyService,service=EJB3" is missing the following dependencies:

    Dependency "<UNKNOWN jboss.j2ee:ear= ear-name.ear,jar= jarname.jar,name= MyService,service=EJB3>" (should be in state "Described", but is actually in state "** UNRESOLVED Demands 'EJB Global JNDI name' **")

I understand that my stateless EJB will not yet be bound before my Service POJO create method is called.

I’ve tried several way of writing the annotation, with and without parameters with no success.

Obviously if I change my code into

            InitialContext ctx = new InitialContext();

            myEJBTimer = (ITimer) ctx.lookup("'EJB Global JNDI name' ");

I have no problems

My question is: Is it possible to make my code work with annotation?

Thanks.

ml

[jaikiran]

@Depends(“EJB Global JNDI name”)

The value of @Depends is incorrect. It should be the MBean name of the EJB container on which you want to depend. For example:

@Depends("jboss.j2ee:ear=ear-name.ear,jar=jarname.jar,name=TheTimerBean,service=EJB3")

[mldv]

I’ve changed the @Depends.annotation as you suggested.

@Depends("jboss.j2ee:ear=ear-name.ear,jar=jarname.jar,name=TheTimerBean,service=EJB3")

I still get

WARN  [EJBRemoteHandler] EJBTHREE-1828: EJBInjectionContainer

I was wondering if it might depends on

https://jira.jboss.org/browse/JBPAPP-3834?page=com.atlassian.jirafisheyeplugin%3Afisheye-issuepanel

thanks

[jaikiran]

Is it just the WARN message or do you see any error or exception stacktraces?

[mldv]

I see the following error :

09:47:26,750 ERROR [AbstractKernelController] Error installing to Create: name=jboss.j2ee:ear=ear-name.ear,jar=jarname.jar,name=MyService,service=EJB3 state=Configured

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

        at org.jboss.ejb3.service.ServiceContainer.invokeOptionalMethod(ServiceContainer.java:406)

        at org.jboss.ejb3.service.ServiceContainer.create(ServiceContainer.java:206)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

        at java.lang.reflect.Method.invoke(Method.java:597)

        at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59)

        at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150)

        at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)

        at org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:243)

        at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:47)

        at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerContextAction.java:111)

        at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:72)

        at org.jboss.kernel.plugins.dependency.LifecycleAction.installActionInternal(LifecycleAction.java:221)

        at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54)

        at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42)

        at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)

        at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)

        at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)

        at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)

        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1633)

        at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:935)

        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1083)

        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:985)

        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:775)

        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540)

        at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:121)

        at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:51)

        at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)

        at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)

        at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)

        at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1440)

        at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1158)

        at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1179)

        at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1211)

        at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1099)

        at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)

        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1633)

        at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:935)

        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1083)

        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:985)

        at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:823)

        at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)

        at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:782)

        at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)

        at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)

        at org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)

        at org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)

        at org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:403)

        at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)

        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1633)

        at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:935)

        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1083)

        at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:985)

        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:775)

        at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540)

        at org.jboss.system.server.profileservice.repository.AbstractProfileService.registerProfile(AbstractProfileService.java:308)

        at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:256)

        at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)

        at org.jboss.Main.boot(Main.java:221)

        at org.jboss.Main$1.run(Main.java:556)

        at java.lang.Thread.run(Thread.java:619)

Caused by: java.lang.reflect.InvocationTargetException

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

        at java.lang.reflect.Method.invoke(Method.java:597)

        at org.jboss.ejb3.service.ServiceContainer.invokeOptionalMethod(ServiceContainer.java:394)

        ... 61 more

Caused by: java.lang.NullPointerException

        at MyService.create(MyService.java:39)

        ... 66 more

09:47:27,313 INFO  [ProfileServiceBootstrap] Loading profile: ProfileKey@13864b2[domain=default, server=default,]

09:47:27,313 ERROR [ProfileServiceBootstrap] Failed to load profile: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS):

DEPLOYMENTS IN ERROR:

  Deployment "jboss.j2ee:ear=ear-name.ear,jar=jarname.jar,name=MyService,service=EJB3" is in error due to the following reason(s): java.lang.NullPointerException

09:47:27,360 INFO  [Http11Protocol] Starting Coyote HTTP/1.1 on http-127.0.0.1-8080

09:47:27,422 INFO  [AjpProtocol] Starting Coyote AJP/1.3 on ajp-127.0.0.1-8009

09:47:27,422 INFO  [ServerImpl] JBoss (Microcontainer) [5.0.0.GA (build: SVNTag=JBPAPP_5_0_0_GA date=200910202128)] Started in 50s:223ms

thanks

[jaikiran]

The NullPointerException is coming from your code:

Caused by: java.lang.NullPointerException

        at  MyService.create(MyService.java:39)

So you'll have to see what's wrong with line 39 of that class in your application.

[mldv]

on line 39 there is a call to the ejb method for the creation of the timer (ctx.getTimerService().createTimer)

with the lookup of the EJB the same code give me no problem.

@Service

@Local(MyInterfaceService.class)

@Depends("jboss.j2ee:ear=earname.ear,jar=jarname.jar,name=TheTimerBean,service=EB3")

public class MyService implements MyInterfaceService {

@EJB

private ITimer myEJBTimer;

@Override

public void create() throws Exception {

line 39           myEJBTimer.attiva();

      }

}

thanks

[mldv]

Here is the code of my stateless EJB

My EJB is a multiple Timer Object using the TimerService object.

@Stateless

@Local(ITimer.class)

public class TheTimerBean implements ITimer {

      @Resource

      private SessionContext ctx;

      @Override

      public void attiva() {

            ctx.getTimerService().createTimer(1 * 1000, 1 * 1000, null);

      }

      @Timeout

      public void timeOutMethod(Timer timer) {

            …

      }

}

Thanks