Hi,
I am trying to create owned one-to-many entities. Class "Nemovitost" has
exactly one "Realitka" class and "Realitka" can have many "Nemovitost".
Unfortunately I am failing to create "Nemovitost". When I do that, it seems
ok, no exception raised during persist but no entity "Nemovitost" can be
found in Datastore viewer and the "List<Nemovitost> seznamNemovitosti" stays
at size 0. And there is no field "seznamNemovitosti" in Datastore viewer.
Perhaps it is something dumb but I can't find the problem. Any advice
appreciated.
This is parts of my code:
Realitka.java:
...
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Realitka {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key id;
@Persistent(mappedBy="realitka")
private List<Nemovitost> seznamNemovitosti;
...
Nemovitost.java:
...
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Nemovitost {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key id;
@Persistent
private Realitka realitka;
...
Persisting in servlet:
...
PersistenceManager pm = PMF.get().getPersistenceManager();
Transaction tx = pm.currentTransaction();
Nemovitost n = new Nemovitost(req.getParameter("value"));
tx.begin();
Realitka r = pm.getObjectById(Realitka.class, rkId); *//Realitka was
previously created and is fetched correctly here.*
n.setRealitka(r);
try {
n = pm.makePersistent(n); *//No exception here, but no
Nemovitost in Datastore is created :(*
} finally {
tx.commit();
pm.close();
}
...
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