private static void deleteWorkerFromHisDepartmentAndRelocateHimToNullDep(
String workerName, Department nullDepartment) {
Worker workerForDel = workerDAO.getByName(workerName);
Department depForUpdate = departmentDAO.getByWorker(workerForDel);
if (depForUpdate != null) {
depForUpdate.removeWorker(workerForDel);
nullDepartment.addWorker(workerForDel);
departmentDAO.update(depForUpdate);
departmentDAO.update(nullDepartment);
}
}
private static Worker getWorkOrCreate(
Department currentDepartment, Department nullDepartment, String workerName) {
Worker w = workerDAO.getByName(workerName);
if (w == null) {
w = new Worker(workerName);
workerDAO.save(w);
} else {
Department oldWorkerDep = departmentDAO.getByWorker(w);
if (oldWorkerDep != null) {
oldWorkerDep.removeWorker(w);
departmentDAO.update(oldWorkerDep);
}
}
if (currentDepartment != null) {
currentDepartment.addWorker(w);
departmentDAO.update(currentDepartment);
} else {
nullDepartment.addWorker(w);
departmentDAO.update(nullDepartment);
}
return w;
}