storm trident function函数

package cn.crxy.trident;

import java.util.List;

import backtype.storm.Config;

import backtype.storm.LocalCluster;

import backtype.storm.generated.StormTopology;

import backtype.storm.tuple.Fields;

import backtype.storm.tuple.Values;

import storm.trident.TridentTopology;

import storm.trident.operation.BaseFunction;

import storm.trident.operation.TridentCollector;

import storm.trident.testing.FixedBatchSpout;

import storm.trident.tuple.TridentTuple;

public class TridentLocalPologyFunction {

public static class SumBolt extends BaseFunction{

@Override

public void execute(TridentTuple tuple, TridentCollector collector) {

//List<Object> values = tuple.getValues();

//System.err.println("values="+values.toString() );

Integer value0 = tuple.getInteger(0);

// Integer value1 = tuple.getInteger(1);

// Integer value2 = tuple.getInteger(2);

// Integer value3 = tuple.getInteger(3);

//Integer value2 = tuple.getInteger(1);

System.err.println("value0="+value0 );

}

}

public static void main(String[] args) {

//输出为new Fields("sentence")

FixedBatchSpout spout = new FixedBatchSpout(new Fields("sentence"), 1, new Values(9999));

spout.setCycle(true);

TridentTopology tridentTopology = new TridentTopology();

tridentTopology.newStream("spout1", spout).each(new Fields("sentence"), new SumBolt(), new Fields(""));

LocalCluster localCluster = new LocalCluster();

localCluster.submitTopology("trident", new Config(), tridentTopology.build());

}

}