Spring + OpenJPA FetchType.LAZY

[Gregg Bolinger <gd...@gmail.com>]

I seem to be having an issue with Lazy loading.  I am using the latest
Spring and the latest OpenJPA.  I have the following:

@Entity
@Table(name = "category")
public class Category {

    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;
    private String category;

    @ManyToOne
    private Category parentCategory;

    @OneToMany(mappedBy = "parentCategory",
            cascade = {CascadeType.ALL}, fetch = FetchType.EAGER)
    private Set<Category> childCategories = new HashSet<Category>();

   // GETTERS AND SETTER OMITTED
}

If I remove the FetchType.EAGER and allow LAZY and I do the following:

Category cat = (Category) getJpaTemplate().find(Category.class, id);
System.out.println(cat.getChildCategories().size());

I get an NPE for getChildCategories.size().  However, with EAGER I get the 2
child records that are there.  I am using the following Filter provided by
Spring...

<filter>
        <filter-name>jpaFilter</filter-name>
        <filter-class>
org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter
</filter-class>
</filter>

Can someone tell me what I am doing wrong?

Thanks.

Gregg