When an uninitialized, enhanced proxy that has an immutable natural ID is flushed, the following exception is thrown:
javax.persistence.PersistenceException: org.hibernate.HibernateException: An immutable natural identifier of entity org.hibernate.test.bytecode.enhancement.lazy.proxy.NaturalIdInUninitializedProxyTest$EntityImmutableNaturalId was altered from name to null
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1489)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:512)
at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3321)
at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2517)
at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:178)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:39)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:271)
at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:104)
at org.hibernate.testing.transaction.TransactionUtil2.inTransaction(TransactionUtil2.java:113)
at org.hibernate.testing.transaction.TransactionUtil2.lambda$inTransaction$0(TransactionUtil2.java:61)
at org.hibernate.testing.transaction.TransactionUtil2.inSession(TransactionUtil2.java:35)
at org.hibernate.testing.transaction.TransactionUtil2.inTransaction(TransactionUtil2.java:59)
at org.hibernate.testing.junit4.BaseNonConfigCoreFunctionalTestCase.inTransaction(BaseNonConfigCoreFunctionalTestCase.java:572)
at org.hibernate.test.bytecode.enhancement.lazy.proxy.NaturalIdInUninitializedProxyTest.testImmutableNaturalId(NaturalIdInUninitializedProxyTest.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.hibernate.testing.junit4.ExtendedFrameworkMethod.invokeExplosively(ExtendedFrameworkMethod.java:45)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.hibernate.HibernateException: An immutable natural identifier of entity org.hibernate.test.bytecode.enhancement.lazy.proxy.NaturalIdInUninitializedProxyTest$EntityImmutableNaturalId was altered from name to null
at org.hibernate.event.internal.DefaultFlushEntityEventListener.checkNaturalId(DefaultFlushEntityEventListener.java:114)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:191)
at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:146)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:235)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:94)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:38)
at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1483)
... 29 more