@Transactional()
public void addPeriodToRun(Long runId, String name) {
try {
Run run = this.retrieveById(runId);
Set<Group> periods = run.getPeriods();
Group group = new PersistentGroup();
group.setName(name);
this.groupDao.save(group);
periods.add(group);
this.runDao.save(run);
} catch (ObjectNotFoundException e) {
e.printStackTrace();
}
}
