QueryBuilder Throws AbstractMethodError in JPA

rfmoorejr · **Joined:** Tue Jun 01, 2010 1:30 pm **Posts:** 1

The following exception is thrown when attempting to use JPA to get size of a table (simple count() operation):

Code:

java.lang.AbstractMethodError: org.hibernate.ejb.EntityManagerImpl.getCriteriaBuilder()Ljavax/persistence/criteria/CriteriaBuilder;
        at com.rfm.entities.CustomerJpaController.getCustomerCount(CustomerJpaController.java:162)
        at com.rfm.wicket.HomePage$1.size(HomePage.java:35)
        .....

The Netbeans JPA wizard provided this code for the function:

Code:

public int getCustomerCount() {
        EntityManager em = getEntityManager();
        try {
            CriteriaQuery cq = em.getCriteriaBuilder().createQuery();
            Root<Customer> rt = cq.from(Customer.class);
            cq.select(em.getCriteriaBuilder().count(rt));
            Query q = em.createQuery(cq);
            return ((Long) q.getSingleResult()).intValue();
        } finally {
            em.close();
        }
    }

Using Netbeans 6.8, GlassfishV3, latest JavaDB libraries, JDK 1.6.0_13 and internal Netbeans Hibernate JPA libraries
Perhaps someone has seen this before and knows the source of the problem
Thanks

jonycus · **Joined:** Tue Mar 30, 2010 2:10 pm **Posts:** 4

I have the same problem. Did you manage to solve it somehow?

Thanks in advance.. :)

Best regards,
Vasko

vbnaik · **Joined:** Thu Jul 15, 2010 6:44 am **Posts:** 13

From the face of it looks like the Entity Manager Impl is not supporting the method ".getCriteriaBuilder()" .

Try changing the hibernate jars to the latest available.

jonycus · **Joined:** Tue Mar 30, 2010 2:10 pm **Posts:** 4

Thanks for the point. It turned out that since it was a fresh install of GlassFish it did not have the Hibernate module installed with it (or it had but not updated).. installed (or updated) it and it worked...

Thanks again...

Best regards,
Vasko