package tutorial.storm.trident.operations; import storm.trident.operation.BaseFilter; import storm.trident.tuple.TridentTuple; import java.util.regex.Pattern; /** * @author Enno Shioji ([email protected]) */ public class RegexFilter extends BaseFilter { private final Pattern pattern; public RegexFilter(String pattern) { this.pattern = Pattern.compile(pattern); } @Override public boolean isKeep(TridentTuple tuple) { String string = tuple.getString(0); return pattern.matcher(string).matches(); } }