OpenEntityManagerInViewFilter doesn't work on Glassfish

[Boris Romashov]

My project is built on Spring + JPA + Hibernate.
In my web.xml I have
<filter> <filter-name>OpenEntityManagerInViewFilter</filter-name> <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class> </filter> <filter-mapping> <filter-name>OpenEntityManagerInViewFilter</filter-name> <servlet-name>spring</servlet-name> </filter-mapping>

JPA Entity:

@Entity
public class Cat
{
    ...
    @ManyToOne(fetch = FetchType.LAZY, optional = false)
    private Person master;
    ...
}

Controller:

@Controller
public class CatController {

    @PersistenceContext
    protected EntityManager entityManager;

    @RequestMapping("/cat")
    public ModelAndView cat() {
		ModelAndView mav = new ModelAndView("cat");
		Cat cat = entityManager.find(Cat.class, 1);
		mav.addObject(cat);
		return mav;
    }

}

JSP:
${cat.master}

In Tomcat JSP shows master field properly, in Glassfish it displays null.
Why ?