Package org.apache.storm.starter

Class WordCountTopologyNode.WordCount

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseBasicBolt

org.apache.storm.starter.WordCountTopologyNode.WordCount

All Implemented Interfaces:

Serializable, IBasicBolt, IComponent

Enclosing class:

WordCountTopologyNode

public static class WordCountTopologyNode.WordCount
extends BaseBasicBolt

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
WordCount()

Method Summary

Modifier and Type	Method	Description
void	declareOutputFields(OutputFieldsDeclarer declarer)	Declare the output schema for all the streams of this topology.
void	execute(Tuple tuple, BasicOutputCollector collector)	Process the input tuple and optionally emit new tuples based on the input tuple.

Methods inherited from class org.apache.storm.topology.base.BaseBasicBolt

cleanup, prepare

Methods inherited from class org.apache.storm.topology.base.BaseComponent

getComponentConfiguration

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.storm.topology.IComponent

getComponentConfiguration

Constructor Details

WordCount

public WordCount()

Method Details

execute

public void execute(Tuple tuple,
 BasicOutputCollector collector)

Description copied from interface: IBasicBolt

Process the input tuple and optionally emit new tuples based on the input tuple.

All acking is managed for you. Throw a FailedException if you want to fail the tuple.

declareOutputFields

public void declareOutputFields(OutputFieldsDeclarer declarer)

Description copied from interface: IComponent

Declare the output schema for all the streams of this topology.

Parameters:

declarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream