package tutorial.storm.trident.operations; import storm.trident.operation.BaseFilter; import storm.trident.tuple.TridentTuple; import twitter4j.User; /** * @author Enno Shioji ([email protected]) */ public class OnlyEnglish extends BaseFilter { @Override public boolean isKeep(TridentTuple tuple) { User user = (User)tuple.get(0); return "en".equals(user.getLang()); } }