Hello, I am testnig EclipseLink and have one problem: I have two classes, Route and RouteStop (tables are named same, everything is ddl auto-generated). Each Route is collection of RouteStops which is defined by field "route" in RouteStop table. So here is what I did:
@Entity
public class Route implements Serializable {
@Id
@GeneratedValue
private int route_id = 0;
...
@OneToMany(targetEntity=RouteStop.class, mappedBy="route")
@JoinColumn(name="ROUTE_ID", referencedColumnName="ROUTE")
private List<RouteStop> stops;
RouteStop.java:
@NamedQuery (
name = "All Routes",
query = "select r from Route r"
)
@Entity
public class RouteStop implements Serializable {
@Id
@GeneratedValue
private int route_stop_id = 0;
...
@ManyToOne(optional=true, fetch=FetchType.LAZY)
private Route route;
...
}
Now I inserted one route with two stops to empty (MySQL) DB:
em.getTransaction().begin();
Route r = new Route();
em.persist(r);
RouteStop rs1 = new RouteStop();
rs1.setRoute(r);
em.persist(rs1);
RouteStop rs2 = new RouteStop();
rs2.setRoute(r);
em.persist(rs2);
em.getTransaction().commit();
EclipseLink created both tables nicely and inserted these 3 records. In ROUTESTOP table there is "ROUTE_ROUTE_ID" field, which properly contains ID of related route.
Problem is when readnig Route, it does contains empty RouteStop list:
Query q = em.createNamedQuery("All Routes");
List<Route> res = q.getResultList(); // This list is OK, contains one route
for (Route route : res) {
List<RouteStop> stops = route.getStops();
for (RouteStop rs : stops) {
// never gets here, stops list is empty!
}
}
Any idea?
