how to disable cache in eclipselink

Question

I have tried disabling L2 cache in EclipseLink with Eclipse indigo by using following properties in persistence.xml:-

Answer 1

Add this line in each function where the call is made. I use in the find function when consulted a view.

((JpaEntityManager)em.getDelegate()).getServerSession().getIdentityMapAccessor().invalidateAll();

This line clear the cache before run de query.

public Entity find(Object id) {
    ((JpaEntityManager)em.getDelegate()).getServerSession().getIdentityMapAccessor().invalidateAll();
    return em.find(Entity.class, id);
}