Entity relation deleated
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() {}
}
