[jboss-dev-forums] [Design of POJO Server] - Re: NPE in TransactionScopedEntityManager

[alesj]

After my fix, I see this duplicate MBean registration:

  | 11:32:41,500 WARN  [AbstractDeploymentContext] Unable to register deployment mbean persistence.unit:unitName=jboss-seam-dvd.ear/jboss-seam-dvd.jar#dvdDatabase
  | javax.management.InstanceAlreadyExistsException: jboss.deployment:id="persistence.unit:unitName=jboss-seam-dvd.ear/jboss-seam-dvd.jar#dvdDatabase",type=Component already registered.
  |         at org.jboss.mx.server.registry.BasicMBeanRegistry.add(BasicMBeanRegistry.java:767)
  |         at org.jboss.mx.server.registry.BasicMBeanRegistry.registerMBean(BasicMBeanRegistry.java:236)
  |         at sun.reflect.GeneratedMethodAccessor74.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:585)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
  |         at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:138)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
  |         at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:140)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:90)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
  |         at org.jboss.mx.server.MBeanServerImpl$3.run(MBeanServerImpl.java:1431)
  |         at java.security.AccessController.doPrivileged(Native Method)
  |         at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:1426)
  |         at org.jboss.mx.server.MBeanServerImpl.registerMBean(MBeanServerImpl.java:376)
  |         at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext.registerMBeans(AbstractDeploymentContext.java:989)
  |         at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentContext.addComponent(AbstractDeploymentContext.java:719)
  |         at org.jboss.deployers.structure.spi.helpers.AbstractDeploymentUnit.addComponent(AbstractDeploymentUnit.java:249)
  |         at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataFactoryVisitor.addBeanComponent(BeanMetaDataFactoryVisitor.java:52)
  |         at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataFactoryVisitor.deploy(BeanMetaDataFactoryVisitor.java:126)
  |         at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployerWithInput.deploy(AbstractRealDeployerWithInput.java:125)
  |         at org.jboss.deployers.spi.deployer.helpers.AbstractComponentDeployer.deployComponents(AbstractComponentDeployer.java:102)
  |         at org.jboss.deployers.spi.deployer.helpers.AbstractComponentDeployer.internalDeploy(AbstractComponentDeployer.java:82)
  |         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:1410)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1128)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1181)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1069)
  |         at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
  |         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1598)
  |         at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
  |         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1062)
  |         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
  |         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
  |         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
  |         at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:752)
  |         at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:541)
  |         at org.jboss.system.server.profileservice.ProfileServiceBootstrap.loadProfile(ProfileServiceBootstrap.java:265)
  |         at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:143)
  |         at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:410)
  |         at org.jboss.Main.boot(Main.java:209)
  | 
As components are auto(magically) registered by DeploymentContext.

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