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Author Message
JamesFarmer
 Post subject: "IllegalAccessException: Can not set long field" wrong class
PostPosted: Tue Jun 12, 2012 12:32 pm 
Newbie

Joined: Tue Jan 31, 2012 2:21 pm
Posts: 3
Hi all,

We have an EJB/JPA application using JBoss 7.1.0 (so Hibernate 4.0.1) and a Postgres 9.1 database. At one point we're finding that a commit is failing and we're struggling to understand the error message:

Code:
javax.transaction.RollbackException: ARJUNA016053: Could not commit transaction.
   at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1177)
   at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:117)
   at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:75)
   at org.jboss.tm.usertx.client.ServerVMClientUserTransaction.commit(ServerVMClientUserTransaction.java:167)
   at com.example.myDataAccessorEJB.startExecutingTask(myDataAccessorEJB.java:1067) [myejb.jar:0.01.00 (12 Jun 2012 12:52)]
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_31]
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_31]
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_31]
   at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_31]
   at org.jboss.as.ee.component.ManagedReferenceMethodInterceptorFactory$ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptorFactory.java:72) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:36) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:374) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.concurrency.ContainerManagedConcurrencyInterceptor.processInvocation(ContainerManagedConcurrencyInterceptor.java:105) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.tx.EjbBMTInterceptor.handleInvocation(EjbBMTInterceptor.java:105) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.as.ejb3.tx.BMTInterceptor.processInvocation(BMTInterceptor.java:56) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.singleton.SingletonComponentInstanceAssociationInterceptor.processInvocation(SingletonComponentInstanceAssociationInterceptor.java:53) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:32) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:165) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:173) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:72) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at com.example.myDataAccessor$$$view7.startExecutingTask(Unknown Source) [myejb.jar:0.01.00 (12 Jun 2012 12:52)]
   at com.example.myMDB.onMessage(myMDB.java:90) [myejb.jar:0.01.00 (12 Jun 2012 12:52)]
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_31]
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_31]
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_31]
   at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_31]
   at org.jboss.as.ee.component.ManagedReferenceMethodInterceptorFactory$ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptorFactory.java:72) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:36) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.tx.EjbBMTInterceptor.handleInvocation(EjbBMTInterceptor.java:105) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.as.ejb3.tx.BMTInterceptor.processInvocation(BMTInterceptor.java:56) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:43) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ejb3.component.messagedriven.MessageDrivenComponentDescription$4$1.processInvocation(MessageDrivenComponentDescription.java:177) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:165) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:173) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
   at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:72) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
   at javax.jms.MessageListener$$$view3.onMessage(Unknown Source) [jboss-jms-api_1.1_spec-1.0.0.Final.jar:1.0.0.Final]
   at sun.reflect.GeneratedMethodAccessor25.invoke(Unknown Source) [:1.6.0_31]
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_31]
   at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_31]
   at org.jboss.as.ejb3.inflow.MessageEndpointInvocationHandler.doInvoke(MessageEndpointInvocationHandler.java:140) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at org.jboss.as.ejb3.inflow.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:73) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
   at $Proxy47.onMessage(Unknown Source)   at org.hornetq.ra.inflow.HornetQMessageHandler.onMessage(HornetQMessageHandler.java:278)
   at org.hornetq.core.client.impl.ClientConsumerImpl.callOnMessage(ClientConsumerImpl.java:983)
   at org.hornetq.core.client.impl.ClientConsumerImpl.access$400(ClientConsumerImpl.java:48)
   at org.hornetq.core.client.impl.ClientConsumerImpl$Runner.run(ClientConsumerImpl.java:1113)
   at org.hornetq.utils.OrderedExecutorFactory$OrderedExecutor$1.run(OrderedExecutorFactory.java:100)
   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_31]
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_31]
   at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_31]
Caused by: javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.example.db.TaskState.id
   at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1361) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1289) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1295) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.ejb.AbstractEntityManagerImpl$CallbackExceptionMapperImpl.mapManagedFlushFailure(AbstractEntityManagerImpl.java:1481) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorImpl.beforeCompletion(SynchronizationCallbackCoordinatorImpl.java:109) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization.beforeCompletion(RegisteredSynchronization.java:53) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:76)
   at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:273)
   at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:93)
   at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:164)
   at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1165)
   ... 96 more
Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.example.db.TaskState.id
   at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:61) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:341) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4260) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:258) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:165) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.event.internal.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:437) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.event.internal.DefaultPersistEventListener.justCascade(DefaultPersistEventListener.java:190) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.event.internal.DefaultPersistEventListener.entityIsPersistent(DefaultPersistEventListener.java:183) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:147) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.internal.SessionImpl.firePersistOnFlush(SessionImpl.java:750) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.internal.SessionImpl.persistOnFlush(SessionImpl.java:743) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.spi.CascadingAction$8.cascade(CascadingAction.java:346) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:380) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:323) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:208) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:165) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.event.internal.AbstractFlushingEventListener.cascadeOnFlush(AbstractFlushingEventListener.java:160) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.event.internal.AbstractFlushingEventListener.prepareEntityFlushes(AbstractFlushingEventListener.java:151) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:88) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1081) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:315) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorImpl.beforeCompletion(SynchronizationCallbackCoordinatorImpl.java:104) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   ... 102 more
Caused by: java.lang.IllegalArgumentException: Can not set long field com.example.db.TaskState.id to com.example.db.TaskLog_$$_javassist_34
   at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:146) [rt.jar:1.6.0_31]
   at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:150) [rt.jar:1.6.0_31]
   at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:37) [rt.jar:1.6.0_31]
   at sun.reflect.UnsafeLongFieldAccessorImpl.getLong(UnsafeLongFieldAccessorImpl.java:42) [rt.jar:1.6.0_31]
   at sun.reflect.UnsafeLongFieldAccessorImpl.get(UnsafeLongFieldAccessorImpl.java:18) [rt.jar:1.6.0_31]
   at java.lang.reflect.Field.get(Field.java:358) [rt.jar:1.6.0_31]
   at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:58) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
   ... 124 more


It looks as though Hibernate is making some connection between the TaskState entity's 'id' field and some proxy of the TaskLog entity, but we're confused as to why this should be; the only connection is that the TaskLog entity would be referenced from a different field in TaskState (in a @OneToOne relationship), and the rest of our JPA entities are fairly straightforward:

Code:
@Entity
@Table(name="Tasks")
public class Task {
  @Id
  @GeneratedValue(strategy=GenerationType.AUTO)
  private long id;

  @OneToOne(fetch=FetchType.LAZY,cascade=CascadeType.ALL,orphanRemoval=true)
  private TaskState state;

  private boolean is_executing;

  public void startExecuting() {
    if (!is_executing) {
      is_executing = true;
      state.startExecuting();
    }
  }
}

@Entity
@Table(name="TaskState")
public class TaskState {
  @Id
  @GeneratedValue(strategy=GenerationType.AUTO)
  private long id;

  @Temporal(TemporalType.TIMESTAMP)
  private Date execution_start_time;

  @OneToOne(cascade=CascadeType.ALL,orphanRemoval=true,optional=true,fetch=FetchType.LAZY)
  private TaskLog current_log;

  public void startExecuting() {
    execution_start_time = new Date();
    current_log = null;
  }
}

@Entity
@Table(name="TaskLogs")
public class TaskLog {
  @Id
  @GeneratedValue(strategy=GenerationType.AUTO)
  @Column(nullable=false)
  private long id;

  @Lob
  @org.hibernate.annotations.Type(type="org.hibernate.type.StringClobType")
  @Column(nullable=false)
  private String value;
}


The exception is being thrown during a singleton EJB using BMT from the following code (where 'ut' as a UserTransaction and 'em' an EntityManager):

Code:
ut.begin();
boolean success = true;
try {
  Task t = em.find(Task.class,task_id,LockModeType.PESSIMISTIC_WRITE);
  t.startExecuting();
  success = true;
} finally {
  if (success) ut.commit();
  else ut.rollback();
}


If anyone can offer any advice as to how this error is caused, we would be most grateful.
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JamesFarmer
 Post subject: Re: "IllegalAccessException: Can not set long field" wrong class
PostPosted: Wed Jun 13, 2012 8:47 am 
Newbie

Joined: Tue Jan 31, 2012 2:21 pm
Posts: 3
This error went away when we changed the relationship to @OneToOne(optional=false) and modified the code so that TaskState.current_log is never null. However the same error recurred in a different part of the code that's also a @OneToOne(optional=true,cascade=CascadeType.ALL,orphanRemoval=true,fetch=FetchType.LAZY) relationship being set to 'null' - am I correct in believing that I should be able to set a @OneToOne(optional=true) relationship to 'null'?
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