@Override
public void forceLogout(String username) {
// let's logout all sessions of this user
for (Object prince : sessionRegistry.getAllPrincipals())
if (prince instanceof SessionUser) {
SessionUser user = (SessionUser) prince;
if (user.getUsername().equals(username))
for (SessionInformation si : sessionRegistry
.getAllSessions(prince, false))
si.expireNow();
}
}