private void removeCacheSessionListener(String uuid) {
// Tricky: if onRemove() is called upon session expiration, there might not be an
// ExternalContext. But it's fine,
// because the session goes away -> all of its attributes go away so we don't have to remove
// them below.
final ExternalContext.Session session =
NetUtils.getSession(XFormsStateManager.FORCE_SESSION_CREATION);
if (session != null) {
final Map<String, Object> sessionAttributes =
session.getAttributesMap(ExternalContext.Session.APPLICATION_SCOPE);
final String listenerSessionKey = getListenerSessionKey(uuid);
final ExternalContext.Session.SessionListener listener =
(ExternalContext.Session.SessionListener) sessionAttributes.get(listenerSessionKey);
if (listener != null) {
// Remove listener
session.removeListener(listener);
// Forget, in session, mapping (UUID -> session listener)
sessionAttributes.remove(listenerSessionKey);
}
}
}
