coding:

try {
Session session = getFactory().getCurrentSession();
tran = session.beginTransaction();
session.merge(department);
if ((department.getNsUserDepartments().isEmpty())
&& (department.getNsGrades().isEmpty())){
session.delete(department);
tran.commit();
return true;
} else {
tran.rollback();
return false;
}



in that coding department is an object.


when i try to delete the object after merge. i can't delete