org.apache.flink.streaming.examples.twitter

Class TwitterExample.SelectEnglishAndTokenizeFlatMap

java.lang.Object

org.apache.flink.streaming.examples.twitter.TwitterExample.SelectEnglishAndTokenizeFlatMap

All Implemented Interfaces:

Serializable, FlatMapFunction<String,Tuple2<String,Integer>>, Function

Enclosing class:

TwitterExample

public static class TwitterExample.SelectEnglishAndTokenizeFlatMap
extends Object
implements FlatMapFunction<String,Tuple2<String,Integer>>

Deserialize JSON from twitter source

Implements a string tokenizer that splits sentences into words as a user-defined FlatMapFunction. The function takes a line (String) and splits it into multiple pairs in the form of "(word,1)" (Tuple2<String, Integer>).

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SelectEnglishAndTokenizeFlatMap()

Method Summary

Modifier and Type	Method and Description
void	flatMap(String value, Collector<Tuple2<String,Integer>> out) Select the language from the incoming JSON text.

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectEnglishAndTokenizeFlatMap

public SelectEnglishAndTokenizeFlatMap()

Method Detail

flatMap

public void flatMap(String value,
                    Collector<Tuple2<String,Integer>> out)
             throws Exception

Select the language from the incoming JSON text.

Specified by:

flatMap in interface FlatMapFunction<String,Tuple2<String,Integer>>

Parameters:

value - The input value.

out - The collector for returning result values.

Throws:

Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.