1 Reply Latest reply on Oct 9, 2003 10:47 PM by senthilcool

    NullPointerException while initializing foreign key fields

    senthilcool Newbie

      I am getting a NullPointerException while initializing foreign key fields in the class JDBCCMRFieldBridge when using Optimistic locking (using the time-stamp column).
      I have a 1:N relationship between party and partyroles. I also have these entities configured for optimistic locking. The version field used for optimistic locking is not defined as a CMP field. While initializing the foreign key field for partyroles, the logic seems to be getting the metadata for the version field resulting in a null pointer exception.

      java.lang.NullPointerException
      at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.initializeForeignKeyFields(JDBCCMRFieldBridge.java:1399)
      at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMRFieldBridge.resolveRelationship(JDBCCMRFieldBridge.java:293)
      at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCEntityBridge.resolveRelationships(JDBCEntityBridge.java:223)
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.resolveRelationships(JDBCStoreManager.java:468)
      at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.start(JDBCStoreManager.java:393)
      at org.jboss.ejb.plugins.CMPPersistenceManager.start(CMPPersistenceManager.java:152)
      at org.jboss.ejb.EntityContainer.startService(EntityContainer.java:343)
      at org.jboss.system.ServiceMBeanSupport.start(ServiceMBeanSupport.java:192)
      at sun.reflect.GeneratedMethodAccessor61.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:976)
      at $Proxy12.start(Unknown Source)
      at org.jboss.system.ServiceController.start(ServiceController.java:394)
      at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
      at $Proxy352.start(Unknown Source)
      at org.jboss.ejb.EjbModule.startService(EjbModule.java:330)
      at org.jboss.system.ServiceMBeanSupport.start(ServiceMBeanSupport.java:192)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:976)
      at $Proxy12.start(Unknown Source)
      at org.jboss.system.ServiceController.start(ServiceController.java:394)
      at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
      at $Proxy10.start(Unknown Source)
      at org.jboss.ejb.EJBDeployer.start(EJBDeployer.java:543)
      at org.jboss.deployment.MainDeployer.start(MainDeployer.java:824)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:632)
      at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:605)
      at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
      at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
      at $Proxy6.deploy(Unknown Source)
      at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:302)
      at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:458)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:201)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:212)
      at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:191)

      I am using jboss-3.2.2RC4. I have also attached all my deployment descriptors.

      Pls let me know if I am doing something wrong or if this is a bug.

      Thanks for the help.

      cheers,
      senthil