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

Class WindowFolder<IN,OUT>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperator<OUT>

org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator<OUT,org.apache.flink.api.common.functions.MapFunction<IN,OUT>>

org.apache.flink.streaming.api.operators.StreamMap<StreamWindow<IN>,StreamWindow<OUT>>

org.apache.flink.streaming.api.operators.windowing.WindowFolder<IN,OUT>

All Implemented Interfaces:

Serializable, OneInputStreamOperator<StreamWindow<IN>,StreamWindow<OUT>>, StatefulStreamOperator<StreamWindow<OUT>>, StreamOperator<StreamWindow<OUT>>

public class WindowFolder<IN,OUT>
extends StreamMap<StreamWindow<IN>,StreamWindow<OUT>>

This operator is used to apply foldWindow transformations on WindowedDataStreams.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

StreamOperator.ChainingStrategy

Field Summary

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator

userFunction

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

chainingStrategy, executionConfig, inputCopyDisabled, output, runtimeContext

Constructor Summary

Constructors

Constructor and Description
WindowFolder(org.apache.flink.api.common.functions.FoldFunction<IN,OUT> folder, OUT initialValue)

Method Summary

Methods inherited from class org.apache.flink.streaming.api.operators.StreamMap

processElement

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator

close, confirmCheckpointCompleted, getStateSnapshotFromFunction, getUserFunction, open, restoreInitialState, setup

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

disableInputCopy, getChainingStrategy, isInputCopyingDisabled, setChainingStrategy

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

close, getChainingStrategy, isInputCopyingDisabled, open, setChainingStrategy, setup

Constructor Detail

WindowFolder

public WindowFolder(org.apache.flink.api.common.functions.FoldFunction<IN,OUT> folder,
                    OUT initialValue)