Hi,

I just hit an NPE which will happen when removing cascaded transient instances. Here are the relevant code lines from the code stack below:


The null pointer exception is caused by the last parameter to eventSource.delete being null, which gets propagated all the way to DefaultDeleteEventListener as transientEntitites.

While a null check would fix the npe, it doesn't seem like that's the correct thing to do...

Should I report this as an issue?

Hibernate version:
3.2.4 with annotations 3.3.0

Full stack trace of any exception that occurs:
java.lang.NullPointerException
at org.hibernate.event.def.DefaultDeleteEventListener.deleteTransientEntity(DefaultDeleteEventListener.java:183)
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:81)
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:775)
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:758)
at org.hibernate.engine.Cascade.deleteOrphans(Cascade.java:355)
at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:324)
at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:242)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:219)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
at org.hibernate.event.def.DefaultDeleteEventListener.cascadeBeforeDelete(DefaultDeleteEventListener.java:307)
at org.hibernate.event.def.DefaultDeleteEventListener.deleteEntity(DefaultDeleteEventListener.java:246)
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:141)
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:775)
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:758)
at org.hibernate.engine.CascadingAction$2.cascade(CascadingAction.java:121)
at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
at org.hibernate.event.def.DefaultDeleteEventListener.cascadeAfterDelete(DefaultDeleteEventListener.java:327)
at org.hibernate.event.def.DefaultDeleteEventListener.deleteEntity(DefaultDeleteEventListener.java:266)
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:141)
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:775)
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:758)
at org.hibernate.engine.CascadingAction$2.cascade(CascadingAction.java:121)
at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:296)
at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:242)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:219)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
at org.hibernate.event.def.DefaultDeleteEventListener.cascadeBeforeDelete(DefaultDeleteEventListener.java:307)
at org.hibernate.event.def.DefaultDeleteEventListener.deleteEntity(DefaultDeleteEventListener.java:246)
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:141)
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:52)
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:766)
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:744)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)
at $Proxy43.delete(Unknown Source)
at com.hoplo.hibernate.Freezer.delete(Freezer.java:94)
at com.hoplo.hibernate.DbEntity.delete(DbEntity.java:24)
at com.hoplo.infomail.test.email.VirtualUpdateJobTest$7.runPersistent(VirtualUpdateJobTest.java:120)
at com.hoplo.hibernate.SessionRunner.run(SessionRunner.java:25)
at com.hoplo.infomail.test.email.VirtualUpdateJobTest.cleanup(VirtualUpdateJobTest.java:125)
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 org.junit.internal.runners.BeforeAndAfterRunner.invokeMethod(BeforeAndAfterRunner.java:74)
at org.junit.internal.runners.BeforeAndAfterRunner.runAfters(BeforeAndAfterRunner.java:65)
at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:37)
at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)
at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

Name and version of the database you are using:
Postgresql 8.x

Hi,
I just ran into the same problem. Looks like a programming error, since hibernate passes a nullpointer to one of its own methods, and this is not handled properly.

The conditions when this happend is unfortunately unclear, as it happened during stress testing, and our log turns out to be insufficient to reconstruct the details of what was going on...

Does any expert see under which conditions this particular call would happen?

Thanks in advance!

I think you are running into the following issue:

http://opensource.atlassian.com/project ... e/HHH-2146

Feel free to vote for that issue.