2 Replies Latest reply on May 3, 2006 2:32 PM by Stephen McCants

    EJB3 Inheritance complains about a parent's collection

    Stephen McCants Newbie

      Hello All,

      Ran into a strange problem (not really sure what is wrong) when I tried to extend a working Entity Bean. The extended Entity Bean complains about a collection in its parent class.

      Here is the error message:

      org.hibernate.AnnotationException: Collection of elements must not have mappedBy or association reference an unmapped entity: TrackedItem.userData

      Here is TrackedItem:

      @DiscriminatorValue(value = "I")
      public class TrackedItem implements Serializable
       @OneToMany(mappedBy="item", cascade = {CascadeType.ALL})
       private Map<String, UserDatum> userData;

      Here is UserDatum:

      public class UserDatum implements Serializable {
       private String key;
       private TrackedItem item;

      Here is Fail which extends TrackedItem:

      @DiscriminatorValue(value = "S")
      public class Fail extends TrackedItem {

      Fail doesn't contain any collections or references to userData or UserDatum.

      When I deploy TrackedItem and UserDatum everything deploys cleanly, works fine and my unit tests pass. When deploy Fail, I get the error message above as the reason the deployment failed.

      Any help is appreciated!