public class MyInterceptor {
    @PersistenceContext( name="xxxx" )  
    private EntityManager em;  
    
    @AroundInvoke  
    Object init( InvocationContext context ) throws Exception {  
      // the result of the native query is a plain date resulting
      // from a non-trivial query of course
      Date now = (Date)em.createNativeQuery( "select sysdate from dual" )
                         .getSingleResult();  
      return context.proceed();  
    }
}

@Stateless
public class BusinessEJB {
    
    @PersistenceContext(name="xxxx")
    private EntityManager em;
    
    @Interceptors( { MyInterceptor.class } )    	
    public List<Result> find() {
        // Result is quite complex with lots of related detail objects
        // which I would like to fetch from the shared cache.
        // The entity Result is annotated @Cacheable( false ) and the 
        // detail entities are @Cacheable( true ). persistence.xml contains 
        // <shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
        return em.createNamedQuery("Result.findAll",Result.class)
                 .getResultList();
    }
}