@Override public Publisher getPublisher() { int connectTimeout = config.getAs(RESTPubSubConfig.PUBLISHER_CONNECT_TIMEOUT, Integer.class); if (context == Context.QUERY_PROCESSING) { return new RESTResultPublisher(HttpClients.createDefault(), connectTimeout); } else { String queryURL = ((List<String>) config.getAs(RESTPubSubConfig.QUERY_URLS, List.class)).get(0); String resultURL = config.getAs(RESTPubSubConfig.RESULT_URL, String.class); return new RESTQueryPublisher(HttpClients.createDefault(), queryURL, resultURL, connectTimeout); } }