I have a project works perfectly with Hibernate 4.3.5-Final but in Hibernate 4.3.6-Final occurred ClassCastException when Hibernate perform a query.

Caused by: java.lang.ClassCastException: com.pnp.teste.projetotestehibernate.Usuario cannot be cast to com.pnp.teste.projetotestehibernate.AbstractModel
at com.pnp.teste.projetotestehibernate.GenericHibernateDao.findUniqueResult(GenericHibernateDao.java:191)
at com.pnp.teste.projetotestehibernate.GenericHibernateDao.findUniqueResult(GenericHibernateDao.java:181)
at com.pnp.teste.projetotestehibernate.UsuarioDaoImpl.buscarPorUsername(UsuarioDaoImpl.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4695)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:630)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:582)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:369)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4667)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4655)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
... 64 more

My pojo and my dao

@Entity
@Table(name = "usuario")
@SequenceGenerator(allocationSize = 1, name = "seq_usuario", sequenceName = "seq_usuario")
public class Usuario extends AbstractModel {
// some attributes
}

@Stateful(name = "usuarioDao")
@Named
@UsuarioDaoQualifier
@LocalBean
public class UsuarioDaoImpl extends GenericHibernateDao<Usuario, Serializable> implements UsuarioDao, Serializable {

private static final long serialVersionUID = -2133771624984338700L;

@Override
public Class<Usuario> getPersistentClass() {
return Usuario.class;
}
}

public abstract class GenericHibernateDao<T extends AbstractModel, K extends Serializable> implements Serializable, GenericDao<T, K> {

private static final long serialVersionUID = -8773809458616814954L;

@PersistenceContext(type = PersistenceContextType.EXTENDED)
protected EntityManager em;
protected Session session;

public Session getSession() {
if (session == null) {
if (em.getDelegate() instanceof org.hibernate.ejb.HibernateEntityManager) {
session = ((org.hibernate.ejb.HibernateEntityManager) em.getDelegate()).getSession();
} else {
session = (org.hibernate.Session) em.getDelegate();
}
}
return session;
}

@SuppressWarnings("unchecked")
@Override
public List<T> findAll() {
Criteria criteria = getSession().createCriteria(this.getPersistentClass());
return criteria.list();
}

@SuppressWarnings({ "unchecked" })
@Override
public T findOneByExample(final T entity) {
Criteria criteria = getSession().createCriteria(this.getPersistentClass());
criteria.add(Example.create(entity).enableLike(MatchMode.ANYWHERE).ignoreCase());
return (T) criteria.uniqueResult();
}

@SuppressWarnings("unchecked")
public Class<T> getPersistentClass() {
return (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];
}

}

What I doing wrong?