Mantis - Resin
I have a parent entity containing unidirectional child entity.
When i persist the parent, the child does get persisted aswell, but the parent never gets the child ID and thus it is lost.
private void test() {
Parent p = new Parent();
Child c = new Child();
c.setName("Elizabeth");
p.setChild(c);
EntityTransaction tx = _manager.getTransaction();
try {
tx.begin();
_manager.persist(p);
tx.commit();
} finally {
if (tx.isActive()) {
tx.rollback();
}
}
System.out.println("Parent: " + p.getId());
System.out.println("Child : " + p.getChild().getId());
}
Running the above test yields:
Parent: 1
Child : 1
But in the parent table in the database:
ID Child
1 0
Parent.java [^] (654 bytes) 04-14-08 06:09 Child.java [^] (442 bytes) 04-14-08 06:09