| [eclipselink-users] remove childs in one-to-many |
|
Hi folks, we encounter a
problem with EL. We migrate from Kodo where different things worked which do
not in EL. - In a one-to-many relation i want to remove a child from the
collection in the parent: - Department
dept = em.find(Department.class, 30); - Employee
emp = dept.getEmployees.getFirst(); - dept.getEmployees().remove(emp); - emp.setDepartment(null); After
some further steps in the transaction there is a flush,
and EL tries to update emp, to set the department foreign key to
null, which causes a foreign key constraint violation. This
looks like an error because this behaviour does
not occur at all relations with the same mapping. We
think that the code is correct in the sense that the OR-Mapper has to respect the need to remove the relation on the Java object in
order to be enabled to be garbage collected. Mapping
from the parent side is configured with private-owned and cascade-all. Mapping
back from the child to the parent is configured with cascade-merge,
cascade-persist We
use EL 1.2 Any
ideas or hints would be appreciated. Regards,
Markus |