protected boolean needReload() {
    	switch(reloadMode) {
    	case REALTIME_RELOAD:
    		return needReloadRealtime();
    	case INTERVEL_RELOAD:
    		return needReloadInterval();
    	case ONETIME_RELOAD:
    		return needReloadOnetime();
    	default:
    		return needReloadRealtime();
    	}
    }