[hibernate-issues] [Hibernate-JIRA] Commenté: (ANN-450) @MapKey does not work with embedded fields

[Benoit (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/ANN-450?page=comments#action_25148 ] 

Benoit commented on ANN-450:
----------------------------

Hello,

I can report the same error even within a JAVA SE environment.  The @MapKey doesn't seem to work if the mapKey is an Embeddable field.  I would really like to see this issue fixed, thank you !

I tried to enter into Hibernate's code, through the Eclipse debugger, and it seems that the SimpleSelect.addColumns function receives as a first argument an array of columns with the good names (ie. the two default ones for the embedded key if it has 2 fields, or the ones overrided) but the second array only contains 1 column name "ID1_" . I hope this helps...

> @MapKey does not work with embedded fields
> ------------------------------------------
>
>          Key: ANN-450
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-450
>      Project: Hibernate Annotations
>         Type: Bug

>     Versions: 3.2.0.cr3
>  Environment: Windows, JBoss Embedded EJB3 with the latested Hibernate Libaries (manually replaced)
>     Reporter: Bryan Brouckaert
>  Attachments: TestCase.zip
>
>
> @javax.persistence.MapKey does not seem to work with @embedded fields.
> The following is programmed (simplified):
> @Entity
> public class MyClass
> {
>    @Id
>    @GeneratedValue
>    private int id;
>    @MapKey(name="myKey")
>    private Map<KeyClass, OtherClass> myField; 
>    ...
> }
> @Entity
> public class OtherClass
> {
>    @Id
>    @GeneratedValue
>    private int id;
>    @Embedded
>    private KeyClass myKey;
>    ...
> }
> @Embeddable
> public class KeyClass
> {
>    private String key1;
>    private String key2;
> }
> The following exception is thrown:
> ERROR 11-10 08:52:30,862 (AbstractController.java:incrementState:440)  -Error installing to Start: name=persistence.units:jar=sidecam.jar,unitName=sidecam state=Create
> java.lang.ArrayIndexOutOfBoundsException: 1
> 	at org.hibernate.sql.SimpleSelect.addColumns(SimpleSelect.java:41)
> 	at org.hibernate.persister.collection.AbstractCollectionPersister.generateSelectRowByIndexString(AbstractCollectionPersister.java:894)
> 	at org.hibernate.persister.collection.AbstractCollectionPersister.<init>(AbstractCollectionPersister.java:478)
> 	at org.hibernate.persister.collection.OneToManyPersister.<init>(OneToManyPersister.java:60)
> 	at org.hibernate.persister.PersisterFactory.createCollectionPersister(PersisterFactory.java:72)
> 	at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:250)
> 	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1218)
> 	at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:691)
> 	at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:127)
> 	at org.jboss.ejb3.entity.PersistenceUnitDeployment.start(PersistenceUnitDeployment.java:264)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> 	at java.lang.reflect.Method.invoke(Unknown Source)
> 	at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:55)
> 	at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:107)
> 	at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)
> 	at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:75)
> 	at org.jboss.kernel.plugins.dependency.LifecycleAction.installAction(LifecycleAction.java:115)
> 	at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.install(KernelControllerContextAction.java:100)
> 	at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
> 	at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:226)
> 	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:709)
> 	at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:429)
> 	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:538)
> 	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:472)
> 	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:274)
> 	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:177)
> 	at org.jboss.kernel.plugins.dependency.AbstractKernelController.install(AbstractKernelController.java:79)
> 	at org.jboss.kernel.plugins.dependency.AbstractKernelController.install(AbstractKernelController.java:73)
> 	at org.jboss.ejb3.MCKernelAbstraction.install(MCKernelAbstraction.java:131)
> 	at org.jboss.ejb3.Ejb3Deployment.startPersistenceUnits(Ejb3Deployment.java:467)
> 	at org.jboss.ejb3.Ejb3Deployment.start(Ejb3Deployment.java:317)
> 	at org.jboss.ejb3.embedded.EJB3StandaloneDeployer.start(EJB3StandaloneDeployer.java:478)
> 	at org.jboss.ejb3.embedded.EJB3StandaloneBootstrap.scanClasspath(EJB3StandaloneBootstrap.java:235)
> 	at be.sigedis.argo.sidecam.tests.ServiceCarriereTest.startupEmbeddedJboss(ServiceCarriereTest.java:55)
> 	at be.sigedis.argo.sidecam.tests.ServiceCarriereTest$1.setUp(ServiceCarriereTest.java:41)
> 	at junit.extensions.TestSetup$1.protect(TestSetup.java:18)
> 	at junit.framework.TestResult.runProtected(TestResult.java:124)
> 	at junit.extensions.TestSetup.run(TestSetup.java:23)
> 	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:297)
> 	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:672)
> 	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:567)

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