org.apache.flink.storm.wordcount.operators

Class BoltTokenizer

java.lang.Object

org.apache.flink.storm.wordcount.operators.BoltTokenizer

All Implemented Interfaces:

backtype.storm.task.IBolt, backtype.storm.topology.IComponent, backtype.storm.topology.IRichBolt, Serializable

public final class BoltTokenizer
extends Object
implements backtype.storm.topology.IRichBolt

Implements the string tokenizer that splits sentences into words as a bolt. The bolt takes a line (input tuple schema: <String>) and splits it into multiple pairs in the form of "(word,1)" (output tuple schema: <String,Integer>).

Same as BoltTokenizerByName, but accesses input attribute by index (instead of name).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	ATTRIBUTE_COUNT
static int	ATTRIBUTE_COUNT_INDEX
static String	ATTRIBUTE_WORD
static int	ATTRIBUTE_WORD_INDEX

Constructor Summary

Constructors

Constructor and Description
BoltTokenizer()

Method Summary

Methods

Modifier and Type	Method and Description
void	cleanup()
void	declareOutputFields(backtype.storm.topology.OutputFieldsDeclarer declarer)
void	execute(backtype.storm.tuple.Tuple input)
Map<String,Object>	getComponentConfiguration()
void	prepare(Map stormConf, backtype.storm.task.TopologyContext context, backtype.storm.task.OutputCollector collector)

Methods inherited from class java.lang.Object

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

Field Detail

ATTRIBUTE_WORD

public static final String ATTRIBUTE_WORD

See Also:

Constant Field Values

ATTRIBUTE_COUNT

public static final String ATTRIBUTE_COUNT

See Also:

Constant Field Values

ATTRIBUTE_WORD_INDEX

public static final int ATTRIBUTE_WORD_INDEX

See Also:

Constant Field Values

ATTRIBUTE_COUNT_INDEX

public static final int ATTRIBUTE_COUNT_INDEX

See Also:

Constant Field Values

Constructor Detail

BoltTokenizer

public BoltTokenizer()

Method Detail

prepare

public void prepare(Map stormConf,
           backtype.storm.task.TopologyContext context,
           backtype.storm.task.OutputCollector collector)

Specified by:

prepare in interface backtype.storm.task.IBolt

execute

public void execute(backtype.storm.tuple.Tuple input)

Specified by:

execute in interface backtype.storm.task.IBolt

cleanup

public void cleanup()

Specified by:

cleanup in interface backtype.storm.task.IBolt

declareOutputFields

public void declareOutputFields(backtype.storm.topology.OutputFieldsDeclarer declarer)

Specified by:

declareOutputFields in interface backtype.storm.topology.IComponent

getComponentConfiguration

public Map<String,Object> getComponentConfiguration()

Specified by:

getComponentConfiguration in interface backtype.storm.topology.IComponent