/**
* Give it a number of tries to update the event/meeting object into DB storage if this still
* satisfy the pre-condition regardless some changes in DB storage
*/
private void handleVersion(SignupMeeting meeting, SignupTimeslot timeslot, SignupAttendee waiter)
throws Exception {
boolean success = false;
for (int i = 0; i < MAX_NUMBER_OF_RETRY; i++) {
try {
meeting = reloadMeeting(meeting.getId());
prepareRemoveFromWaitingList(meeting, timeslot, waiter);
signupMeetingService.updateSignupMeeting(meeting, isOrganizer);
success = true;
break; // add attendee is successful
} catch (OptimisticLockingFailureException oe) {
// don't do any thing
}
}
if (!success)
throw new SignupUserActionException(Utilities.rb.getString("someone.already.updated.db"));
}
private SignupMeeting reloadMeeting(Long meetingId) {
SignupMeeting m =
signupMeetingService.loadSignupMeeting(meetingId, currentUserId, currentSiteId);
return m;
}