This may be an EJB3 question but I am new to both and working with seam ? I have a many to many unidirectional relation. I have a simple from to build these objects / relations up and that works fine. In another form I am trying to work on instances of the object graph but when I display the page the last line in the log is:

09:09:27,174 INFO [STDOUT] Hibernate: delete from Profile_Location where profile_id=?
09:09:27,225 INFO [STDOUT] Hibernate: delete from Profile_Location where profile_id=?
09:09:27,226 INFO [STDOUT] Hibernate: delete from Profile_Location where profile_id=?

I have no delete calls in my code and can't figure out where this is coming from. There are 3 users in the system and that corresponds to the 3 delete calls above. Are my relations mapped wrong? Here is the code for the relations. I have a user and a user has a profile and the profile can have many locations, i.e. a person can have more then one address. The main question is why are these relations being deleted?

User Entity

@Entity
@Name("user")
public class User implements Serializable {

 ...
 private Profile profile;
 ...
 @OneToOne(cascade = CascadeType.ALL)
 @JoinColumn(name = "profile_id")
 public Profile getProfile() {
 return profile;
 }

 public void setProfile(Profile profile) {
 this.profile = profile;
 }
}

Profile Entity

@Entity
@Name("profile")
public class Profile implements Serializable {
 ...
 private Set<Location>locations;
 ....
 @ManyToMany
 @JoinTable(name="Profile_Location",
 joinColumns={@JoinColumn(name="profile_id")},
 inverseJoinColumns={@JoinColumn(name="location_id")})
 public Set<Location> getlocations() {
 return locations;
 }

 public void setlocations(Set<Location> locations) {
 locations = locations;
 }
}

Location Entity. I want the Location to be associated with other types of objects(non just profiles ) there is no reference to the Profile in the Locaiton.

@Entity
@Name("location")
public class Location implements Serializable {
 ...
}

DistanceCalcAction, this is the statefull session bean that is using the Location entities to calcualte distance between users.

@Stateful
@Scope(EVENT)
@Name("distanceCalc")
public class DistanceCalcAction implements DistanceCalc {

 @Logger Log log;

 @PersistenceContext
 private EntityManager em;

 private User fromUser;

 private User toUser;

 @In
 private FacesMessages facesMessages;

 @Out
 private List<User> users;

 @Out(required=false)
 private Double distance;

 @Create
 public void getUsers(){
 users = (List<User>)em.createQuery("SELECT u from User as u").getResultList();
 }

 public void calc(){

 Distance distanceTool = new Distance();

 User from = (User) em.createQuery("SELECT u FROM User u WHERE u.id = :id").setParameter("id",fromUser.getId()).getSingleResult();
 User to = (User) em.createQuery("SELECT u FROM User u WHERE u.id = :id").setParameter("id",toUser.getId()).getSingleResult();

 distance = distanceTool.distanceVincenty(
 from.getProfile().getDefaultLocation().getLatitude(),
 from.getProfile().getDefaultLocation().getLongitude(),
 to.getProfile().getDefaultLocation().getLatitude(),
 to.getProfile().getDefaultLocation().getLongitude(), Distance.FORMAT_MILES);
 }

 @Factory("fromUser")
 public User getFromUser() {
 fromUser = new User();
 return fromUser;
 }
 @Factory("toUser")
 public User getToUser() {
 toUser = new User();
 return toUser;
 }

 public void setFromUser(User fromUser) {
 this.fromUser = fromUser;
 }

 public void setToUser(User toUser) {
 this.toUser = toUser;
 }
 @Destroy @Remove
 public void destroy() {}

}