public UserCacheMgr(Cognoscenti _cog) throws Exception { cog = _cog; needsRecalc = new HashSet<String>(); // now initialize all users as needing a recalc sisce we don't know who // needed update at the time the server was last shut down. for (UserProfile up : UserManager.getAllUserProfiles()) { needsRecalc.add(up.getKey()); } }