[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4384) @JoinColumn must be set for @AssociationOverride to work

[Aleksei Valikov (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-4384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=37973#action_37973 ] 

Aleksei Valikov commented on HHH-4384:
--------------------------------------

I'm running into the same issue with JPA 2.

My environment:
JPA 2, Hibernate-3.5.1-Final, HSQLDB (the latter is not important).

I've created and attached a test case. If I uncomment @JoinColumn in D.e/@AssociationOverride.joinColumns, I start getting errors.

{code}
@Embedded
@AssociationOverride(name = "f", joinColumns = { @JoinColumn(name = "E_F") })
public E getE() { ... }
{code}

Here's a sample stacktrace:

{code}
javax.persistence.PersistenceException: [PersistenceUnit: org.jvnet.hyperjaxb3.hibernate.tests.hhh4384] Unable to configure EntityManagerFactory
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:371)
	at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:55)
	at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48)
	at org.jvnet.hyperjaxb3.hibernate.tests.hhh4384.EntityManagerFactoryTest.entityManagerFactoryCreated(EntityManagerFactoryTest.java:21)
	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.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.hibernate.AnnotationException: Illegal attempt to define a @JoinColumn with a mappedBy association: e.f
	at org.hibernate.cfg.Ejb3JoinColumn.buildJoinColumn(Ejb3JoinColumn.java:254)
	at org.hibernate.cfg.Ejb3JoinColumn.buildJoinColumnsWithDefaultColumnSuffix(Ejb3JoinColumn.java:227)
	at org.hibernate.cfg.Ejb3JoinColumn.buildJoinColumns(Ejb3JoinColumn.java:196)
	at org.hibernate.cfg.ColumnsBuilder.extractMetadata(ColumnsBuilder.java:94)
	at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1415)
	at org.hibernate.cfg.AnnotationBinder.fillComponent(AnnotationBinder.java:2333)
	at org.hibernate.cfg.AnnotationBinder.fillComponent(AnnotationBinder.java:2240)
	at org.hibernate.cfg.AnnotationBinder.bindComponent(AnnotationBinder.java:2192)
	at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1939)
	at org.hibernate.cfg.AnnotationBinder.processIdPropertiesIfNotAlready(AnnotationBinder.java:762)
	at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:726)
	at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:636)
	at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:359)
	at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1206)
	at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1449)
	at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:193)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1077)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:275)
	at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:359)
	... 25 more
{code}

> @JoinColumn must be set for @AssociationOverride to work
> --------------------------------------------------------
>
>                 Key: HHH-4384
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4384
>             Project: Hibernate Core
>          Issue Type: Improvement
>          Components: annotations
>         Environment: Hibernate 3.2 , MySQL 
>            Reporter: Steve Ebersole
>            Priority: Minor
>
> The following error is given when overiding the joincolumn which has not been set explicitly:
> Illegal attempt to define a @JoinColumn with a mappedBy association
> see 
> http://forum.hibernate.org/viewtopic.php?t=960621&highlight=

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