[hibernate-issues] [Hibernate-JIRA] Resolved: (ANN-467) Inheritence of Embedded objects (@Embeddable)

Inheritence of Embedded objects (@Embeddable) ---------------------------------------------- Key: ANN-467 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-467 Project: Hibernate Annotations Type: Bug

Environment: JBoss 4.0.4, MYSQL 5.0.18, Java JDK 1.5.0_06 Reporter: Jean Paul Ebejer

Hi there @Hibernate (must be a pretty often repeated joke in here...) I have an @Embeddable object AllocationId which extends another @Embeddable object (GenericId). AllocationId, is simply a marker class and has NO attributes in it, while all attributes (String id; which I want to persist) are in GenericId (inherited in AllocationId). I get the following exception: org.hibernate.AnnotationException: com.xxx.yyy.AllocationId has no persistent id property at org.hibernate.cfg.AnnotationBinder.bindId(AnnotationBinder.java:1714) at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1171) at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:706) at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:452) at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:268) at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1039) at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1207) at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:154) at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:844) at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:382) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:126) at org.jboss.ejb3.entity.PersistenceUnitDeployment.start(PersistenceUnitDeployment.java:264) 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:585) at org.jboss.ejb3.ServiceDelegateWrapper.startService(ServiceDelegateWrapper.java:102) at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289) at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245) at sun.reflect.GeneratedMethodAccessor144.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) Any Ideas ? Code snippets as follow: @Embeddable public final class AllocationId extends GenericId { // ... serial UID here - removed as considered somewhat sensitive ... /** * @param id */ public AllocationId(final String id) { super(id); } } @Embeddable public abstract class GenericId implements Serializable { /** * The actual Id */ protected String id; // THIS IS NOT BEING 'SEEN' AS INSIDE AllocationId /** * Constructor to create a generic Id. * Syntactic checks are performed here (not null and empty string) * * @param allocationId The allocation Id */ protected GenericId(final String id) { validate(id); this.id = id; } /** * Performs syntactic checking of the generic id * * @param id may not be null or empty "" */ private void validate(final String id) throws IllegalArgumentException { if (id == null) { throw new IllegalArgumentException("id cannot be null"); } if (id.trim().length() == 0) { throw new IllegalArgumentException("id cannot be length 0"); } } /** * @return the id */ public String getId() { return this.id; } @Override public String toString() { return getId(); } // some less interesting code here .equals overrides etc. } Let me know. Many Thanks - for your attention and for your GREAT product, Malta (MT).