org.apache.flink.streaming.api.operators.windowing

Class WindowPartExtractor<OUT>

java.lang.Object

org.apache.flink.streaming.api.operators.windowing.WindowPartExtractor<OUT>

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.FlatMapFunction<StreamWindow<OUT>,org.apache.flink.api.java.tuple.Tuple2<Integer,Integer>>, org.apache.flink.api.common.functions.Function

public class WindowPartExtractor<OUT>
extends Object
implements org.apache.flink.api.common.functions.FlatMapFunction<StreamWindow<OUT>,org.apache.flink.api.java.tuple.Tuple2<Integer,Integer>>

This FlatMapFunction is used to send the number of parts for each window ID (for each parallel discretizer) to the parallel merger that will use is to merge parallel discretized windows

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
WindowPartExtractor()

Method Summary

Modifier and Type	Method and Description
void	flatMap(StreamWindow<OUT> value, org.apache.flink.util.Collector<org.apache.flink.api.java.tuple.Tuple2<Integer,Integer>> out)

Methods inherited from class java.lang.Object

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

Constructor Detail

WindowPartExtractor

public WindowPartExtractor()

Method Detail

flatMap

public void flatMap(StreamWindow<OUT> value,
                    org.apache.flink.util.Collector<org.apache.flink.api.java.tuple.Tuple2<Integer,Integer>> out)
             throws Exception

Specified by:

flatMap in interface org.apache.flink.api.common.functions.FlatMapFunction<StreamWindow<OUT>,org.apache.flink.api.java.tuple.Tuple2<Integer,Integer>>

Throws:

Exception