Is there a fix or workaround for the "unknown mappedBy" problem? No matter what I try I get this error. I have a Party (parent) and a Person (child) that I want to have the same primary key. The Party needs to control the creation of the primary key value and I want Person to use the same value. I've tried without the GenericGenerator - just trying to get the code to deploy without even worrying yet about setting the primary key correctly - and with the GenericGenerator but with no luck. The code for Party: | @Entity | public class Party implements Serializable { | | @Id | @GeneratedValue(strategy=javax.persistence.GenerationType.AUTO) | public Long getId() { | return id; | } | | @OneToOne(optional=true, fetch=javax.persistence.FetchType.LAZY, mappedBy="party", cascade=javax.persistence.CascadeType.ALL) | public Person getPerson() { | return person; | } | | Code for Person | @Entity | public class Person implements Serializable { | @Id | @GeneratedValue(generator="foreign") | @GenericGenerator(name="foreign",strategy="foreign", | parameters={@Parameter(name="property",value="party")}) | public Long getId() { | return id; | | @OneToOne(fetch=javax.persistence.FetchType.EAGER,cascade=javax.persistence.CascadeType.ALL) | @PrimaryKeyJoinColumn | public Party getParty() { | return party; | } | And I get this error | DEBUG 14-09 10:57:50,671 (PropertyBinder.java:make:122) -Building property person | DEBUG 14-09 10:57:50,671 (PropertyBinder.java:make:157) -Cascading person with all | ERROR 14-09 10:57:50,687 (AbstractController.java:incrementState:350) -Error installing to Start: name=persistence.units:jar=classes.jar,unitName=try_talyor_prj state=Create | org.hibernate.AnnotationException: Unknown mappedBy in: com.ndo.healthcare.entities.Party.person, referenced property unknown: com.ndo.healthcare.entities.Person.party | at org.hibernate.cfg.OneToOneSecondPass.doSecondPass(OneToOneSecondPass.java:127) | at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1049) | at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:302) | at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1034) | at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1015) | at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:154) | at org.hibernate.ejb.Ejb3Configuration.createEntityManagerFactory(Ejb3Configuration.java:751) | at org.hibernate.ejb.Ejb3Configuration.createContainerEntityManagerFactory(Ejb3Configuration.java:350) | at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:119) | 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.KernelControllerContextActions.dispatchJoinPoint(KernelControllerContextActions.java:100) | at org.jboss.kernel.plugins.dependency.KernelControllerContextActions$LifecycleAction.installAction(KernelControllerContextActions.java:582) | at org.jboss.kernel.plugins.dependency.KernelControllerContextActions$KernelControllerContextAction.install(KernelControllerContextActions.java:175) | 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:593) | at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:346) | at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:438) | at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:379) | at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:225) | at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:151) | 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:91) | at org.jboss.ejb3.Ejb3Deployment.startPersistenceUnits(Ejb3Deployment.java:626) | at org.jboss.ejb3.Ejb3Deployment.start(Ejb3Deployment.java:475) | at org.jboss.ejb3.embedded.EJB3StandaloneDeployer.start(EJB3StandaloneDeployer.java:460) | at org.jboss.ejb3.embedded.EJB3StandaloneBootstrap.scanClasspath(EJB3StandaloneBootstrap.java:291) | at net.taylor.jboss.EJB3Container.startupEmbeddedJboss(EJB3Container.java:63) | at net.taylor.jboss.EJB3Container.setUp(EJB3Container.java:31) | 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.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128) | 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) | | Am I modeling this wrong? Any help would be greatly appreciated. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3971608#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...