How to Inject session bean from session bean and viceversa

[dinesh thalis]

I have two session beans, they are StudentFacade and SchooldtFacade both of them Stateless, Remote. What I need is call StudentFacade method from SchooldtFacade and vice-versa. Below show how I did it.

public class StudentFacade implements StudentFacadeRemote {
    @EJB
    private SchooldtFacadeRemote schooldtFacade;


public class SchooldtFacade implements SchooldtFacadeRemote {
    @EJB
    private StudentFacadeRemote studentFacade;

If run this application using Galssfish version V2.1 ,V3 work fine without any exception. If I run it using jboss-5.1.0.GA it gave below exception.

 
DEPLOYMENTS MISSING DEPENDENCIES:
  Deployment "jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=SchooldtFacade,service=EJB3" is missing the following dependencies:
    Dependency "<UNKNOWN jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=SchooldtFacade,service=EJB3>" (should be in state "Described", but is actually in state "** UNRESOLVED Demands 'jndi:JbossTest2/StudentFacade/remote-session.StudentFacadeRemote' **")
  Deployment "jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=SchooldtFacade,service=EJB3_endpoint" is missing the following dependencies:
    Dependency "jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=SchooldtFacade,service=EJB3" (should be in state "Configured", but is actually in state "PreInstall")
  Deployment "jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=StudentFacade,service=EJB3" is missing the following dependencies:
    Dependency "<UNKNOWN jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=StudentFacade,service=EJB3>" (should be in state "Described", but is actually in state "** UNRESOLVED Demands 'jndi:JbossTest2/SchooldtFacade/remote-session.SchooldtFacadeRemote' **")
  Deployment "jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=StudentFacade,service=EJB3_endpoint" is missing the following dependencies:
    Dependency "jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=StudentFacade,service=EJB3" (should be in state "Configured", but is actually in state "PreInstall")

DEPLOYMENTS IN ERROR:
  Deployment "<UNKNOWN jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=StudentFacade,service=EJB3>" is in error due to the following reason(s): ** UNRESOLVED Demands 'jndi:JbossTest2/SchooldtFacade/remote-session.SchooldtFacadeRemote' **
  Deployment "<UNKNOWN jboss.j2ee:ear=JbossTest2.ear,jar=JbossTest2-ejb.jar,name=SchooldtFacade,service=EJB3>" is in error due to the following reason(s): ** UNRESOLVED Demands 'jndi:JbossTest2/StudentFacade/remote-session.StudentFacadeRemote' **

	at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:993)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:939)
	at org.jboss.deployers.plugins.main.MainDeployerImpl.checkComplete(MainDeployerImpl.java:873)
	at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.checkComplete(MainDeployerAdapter.java:128)
	at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:369)
	at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:255)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:619)

  

How can I solve this problem.

Thank you.

[Jaikiran Pai]

JBoss AS has a problem with circular injection of EJBs. You can use JBoss specific @org.jboss.ejb3.annotation.IgnoreDependency on one side of the injection to get past this problem. See this thread for details http://www.coderanch.com/t/498867/JBoss/dependency-injection-jboss

[dinesh thalis]

Thanks for reply. I'm using jboss 5.10 and netbeans 6.9.1 In here IDE can't find @IgnoreDependency , I added this also import org.jboss.annotation.IgnoreDependency; but not able to find library that contain @IgnoreDependency. please tell what is the library name should I use ?

[Jaikiran Pai]

dinesh thalis wrote: I added this also import org.jboss.annotation.IgnoreDependency;

That's not the correct one for AS5. The correct one for AS5 is mentioned in my previous reply. You can find that annotation in JBOSS_HOME/client/jboss-ejb3-ext-api.jar of AS5.

[Manuel Alberto Quero]

If you run into this problem when an EJB is referencing to itself (which is an specific case of circular injection),
you can workaround this using the SessionContext interface (SessionContext.getBusinessObject()):

EjbExampleLocal refToMyself = sessionCtx.getBusinessObject(EjbExampleLocal.class)
refToMyself.otherMethod();

Hope this helps,

Manuel

[dinesh thalis]

This is how currently my code, it works fine without any exception my application currently run on glassfish v2.1

@EJB
    private CustomerFacadeRemote customerFacade;

according to your(Manuel Alberto Quero) advice change my code below show that

@Resource
    SessionContext ctx;
    CustomerFacadeRemote customerFacade = ctx.getBusinessObject(CustomerFacadeRemote.class);

But it gave exception

EJB5070: Exception creating stateless session bean : [{0}]
java.lang.NullPointerException
        at bank.session.account.AccountFacade.<init>(AccountFacade.java:59)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at java.lang.Class.newInstance0(Class.java:355)
        at java.lang.Class.newInstance(Class.java:308)
        at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:509)
        at com.sun.ejb.containers.StatelessSessionContainer.access$100(StatelessSessionContainer.java:111)
        at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:772)
        at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:199)
        at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:486)
        at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1700)
        at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1229)
        at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:202)
        at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:77)
        at $Proxy78.addNewSavingAccount(Unknown Source)
        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 com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:233)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:152)
        at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:225)
        at bank.session.account.__AccountFacadeRemote_Remote_DynamicStub.addNewSavingAccount(bank/session/account/__AccountFacadeRemote_Remote_DynamicStub.java)
        at bank.session.account._AccountFacadeRemote_Wrapper.addNewSavingAccount(bank/session/account/_AccountFacadeRemote_Wrapper.java)
        at bank.bd.account.AccountBD.addNewSavingAccount(AccountBD.java:145)
        at bank.ui.saving.FrmAddSavAccount$1.buttonClick(FrmAddSavAccount.java:782)
        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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:487)
        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:161)
        at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1154)
        at com.vaadin.ui.Button.fireClick(Button.java:371)
        at com.vaadin.ui.Button.changeVariables(Button.java:193)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1094)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:590)
        at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:266)
        at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:476)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:288)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:647)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:579)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:831)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
        at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
EJB5018: An exception was thrown during an ejb invocation on [AccountFacade]
javax.ejb.EJBException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB
javax.ejb.CreateException: Could not create stateless EJB
        at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:571)
        at com.sun.ejb.containers.StatelessSessionContainer.access$100(StatelessSessionContainer.java:111)
        at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:772)
        at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:199)
        at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:486)
        at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1700)
        at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1229)
        at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:202)
        at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:77)
        at $Proxy78.addNewSavingAccount(Unknown Source)
        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 com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:233)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:152)
        at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:225)
        at bank.session.account.__AccountFacadeRemote_Remote_DynamicStub.addNewSavingAccount(bank/session/account/__AccountFacadeRemote_Remote_DynamicStub.java)
        at bank.session.account._AccountFacadeRemote_Wrapper.addNewSavingAccount(bank/session/account/_AccountFacadeRemote_Wrapper.java)
        at bank.bd.account.AccountBD.addNewSavingAccount(AccountBD.java:145)
        at bank.ui.saving.FrmAddSavAccount$1.buttonClick(FrmAddSavAccount.java:782)
        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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:487)
        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:161)
        at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1154)
        at com.vaadin.ui.Button.fireClick(Button.java:371)
        at com.vaadin.ui.Button.changeVariables(Button.java:193)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1094)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:590)
        at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:266)
        at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:476)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:288)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:647)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:579)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:831)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
        at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
Caused by: java.lang.NullPointerException
        at bank.session.account.AccountFacade.<init>(AccountFacade.java:59)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at java.lang.Class.newInstance0(Class.java:355)
        at java.lang.Class.newInstance(Class.java:308)
        at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:509)
        ... 61 more
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB
        at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:774)
        at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:199)
        at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:486)
        at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1700)
        at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1229)
        at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:202)
        at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:77)
        at $Proxy78.addNewSavingAccount(Unknown Source)
        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 com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:233)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:152)
        at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:225)
        at bank.session.account.__AccountFacadeRemote_Remote_DynamicStub.addNewSavingAccount(bank/session/account/__AccountFacadeRemote_Remote_DynamicStub.java)
        at bank.session.account._AccountFacadeRemote_Wrapper.addNewSavingAccount(bank/session/account/_AccountFacadeRemote_Wrapper.java)
        at bank.bd.account.AccountBD.addNewSavingAccount(AccountBD.java:145)
        at bank.ui.saving.FrmAddSavAccount$1.buttonClick(FrmAddSavAccount.java:782)
        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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:487)
        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:161)
        at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1154)
        at com.vaadin.ui.Button.fireClick(Button.java:371)
        at com.vaadin.ui.Button.changeVariables(Button.java:193)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1094)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:590)
        at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:266)
        at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:476)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:288)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:647)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:579)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:831)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
        at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
javax.ejb.EJBException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB
        at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:491)
        at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1700)
        at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1229)
        at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:202)
        at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:77)
        at $Proxy78.addNewSavingAccount(Unknown Source)
        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 com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:233)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:152)
        at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:225)
        at bank.session.account.__AccountFacadeRemote_Remote_DynamicStub.addNewSavingAccount(bank/session/account/__AccountFacadeRemote_Remote_DynamicStub.java)
        at bank.session.account._AccountFacadeRemote_Wrapper.addNewSavingAccount(bank/session/account/_AccountFacadeRemote_Wrapper.java)
        at bank.bd.account.AccountBD.addNewSavingAccount(AccountBD.java:145)
        at bank.ui.saving.FrmAddSavAccount$1.buttonClick(FrmAddSavAccount.java:782)
        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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:487)
        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:161)
        at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1154)
        at com.vaadin.ui.Button.fireClick(Button.java:371)
        at com.vaadin.ui.Button.changeVariables(Button.java:193)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1094)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:590)
        at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:266)
        at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:476)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:288)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:647)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:579)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:831)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
        at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
com.vaadin.event.ListenerMethod$MethodException
Cause: javax.ejb.EJBException: nested exception is: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
        java.rmi.RemoteException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB; nested exception is: 
        javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB
        at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:507)
        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:161)
        at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1154)
        at com.vaadin.ui.Button.fireClick(Button.java:371)
        at com.vaadin.ui.Button.changeVariables(Button.java:193)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.handleVariables(AbstractCommunicationManager.java:1094)
        at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleUidlRequest(AbstractCommunicationManager.java:590)
        at com.vaadin.terminal.gwt.server.CommunicationManager.handleUidlRequest(CommunicationManager.java:266)
        at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:476)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:288)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:647)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:579)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:831)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
        at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
Caused by: javax.ejb.EJBException: nested exception is: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
        java.rmi.RemoteException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB; nested exception is: 
        javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB
        at bank.session.account._AccountFacadeRemote_Wrapper.addNewSavingAccount(bank/session/account/_AccountFacadeRemote_Wrapper.java)
        at bank.bd.account.AccountBD.addNewSavingAccount(AccountBD.java:145)
        at bank.ui.saving.FrmAddSavAccount$1.buttonClick(FrmAddSavAccount.java:782)
        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 com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:487)
        ... 36 more

How can I solve this issue

Thanks in advance

[Manuel Alberto Quero]

Hi,

It seems that the problem is that you are initializing customFacade before ctx is given the proper value by the EJB container (i.e. when ctx is still null).

You can try to initialize customFacade in the method's body or if you prefer you could add a method as follows:

                
       ...
public class CustomerFacade implements CustomerFacadeRemote {
      @Resource  
      SessionContext ctx;  
 
      CustomerFacadeRemote customerFacade;

      @PostConstruct
      void initReferences() {
         customerFacade = (CustomerFacadeRemote)ctx.getBusinessObject(CustomerFacadeRemote.class);
      }
      ...

Just remember that this solution is valid when the EJB is referencing to itself...

Hope this can solve your problem,

Manuel