OneToMany bi-directional relationship - OneToMany set is always empty

[jporche]

I have a OneToMany, bi-directional relationship set up with Roo/JPA. I am using the following:

Spring Roo 1.1.5.RELEASE
EclipseLink
MySQL 5.5.14
Java 1.6.0_23
Windows 7

My relationship is defined as follows:

@RooJavaBean
@RooToString
public class Baby {

    @NotNull
    @ManyToOne
    private Mother mother;
}

The bi-directional relationship is defined by:

@RooJavaBean
@RooToString
public class Mother{

    @OneToMany(cascade = {CascadeType.REMOVE }, mappedBy = "mother", fetch =  FetchType.EAGER)
    @OrderBy("sequence")
    Set<Baby> babies= new TreeSet<Baby>();
}

Any time I use a Roo finder method to fetch a Mother from the database, the set of baby objects is always null. However, fetching a Baby from the database always has the Mother member variable set correctly. I have tried FetchType.EAGER and FetchType.LAZY. For example, the following log statement always outputs zero:

Mother m = Mother.findMother(id);

logger.info("mother has {} children", m.getBabies().size());

Thanks, any help is appreciated.