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POWrongClassException switching from eclipselink to Hibernate
 

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  1. POWrongClassException switching from eclipselink to Hibernate
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    <p>I had a working code written in pure JPA and running on Glassfish v3.0.1 (eclipselink) I decided to switch persistence provider to hbernate 3.5.1-final and I'm experiencing exceptions in one query that had worked before.<br> All other queries( named queries) work fine. Could someone tell me what is wrong with the one below? I can't make it a named query because I need to sort the job by different parameters. <br>Why are the collections inside Job class not being queried?<br> Thanks for any help</p> <p>javax.persistence.PersistenceException: org.hibernate.WrongClassException: Object with id: 16 was not of the specified subclass: mypackage.Job (Discriminator: )</p> <p>Hibernate:</p> <p>select job0_.id as id7_, job0_.version as version7_, job0_.created as creat ed7_, job0_.error_msg as error5_7_, job0_.priority as priority7_, job0_.retries as retries7_, job0_.status as status7_, job0_.subject as subject7_, job0_.user_id as user10_7_, job0_.DTYPE as DTYPE7_ from test_job job0_ where job0_.user_id=? order by job0_.created DESC limit ?</p> <pre> List foo; String qst = " SELECT e from Job e WHERE e.user = :user "; qst += " ORDER BY e." + orderBy; Query q = em.createQuery(qst); //TypedQuery +List q.setParameter("user", user); q.setMaxResults(length); q.setFirstResult(start); foo = q.getResultList(); </pre> <p>Classes:</p> <pre> @Entity @Table @NamedQueries{} Job extends BaseEntity{ ... @ManyToMany(fetch = FetchType.EAGER) @JoinTable(name = "job_address", joinColumns = @JoinColumn(name = "job_id"), inverseJoinColumns = @JoinColumn(name = "address_id")) @NotNull protected Set FtpAddress> addresses; @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL) @JoinTable(name = "job_transmission", joinColumns = @JoinColumn(name = "job_id"), inverseJoinColumns = @JoinColumn(name = "transmission_id")) protected Set Transmission> transmissions; } @MappedSuperclass BaseEntity{ int id int version .... } </pre>
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    1. USuser682217
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      1. VTUpMod
    1. CODoes Job have any subclasses? - Because a Discriminator is used for such stuff.
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      1. USRalph
    2. CONo job doesn't have any subclasses. I have other classes that inherit from BaseEntity and persistence for them. Job has 2 transient properties the other classes do not. Does it make any difference?
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    3. COBaseEntity is a MappedSuperclass, so hibernate should tread its subclasses as complete different.
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      1. USRalph
 

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