private static void fillActionIDMap() {
		if (actionIDMap == null) {
			actionIDMap = new HashMap<String, Short>();
			try {
				for (Field f : UserAction.class.getFields()) {
					actionIDMap.put(f.getName(), f.getShort(null));
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}