Package org.apache.flink.state.api.input.operator.window

Class PassThroughReader<KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window,IN>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.state.api.functions.WindowReaderFunction<IN,IN,KEY,W>

org.apache.flink.state.api.input.operator.window.PassThroughReader<KEY,W,IN>

Type Parameters:

KEY - The key type.

W - The window type.

IN - The type stored in state.

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction

public class PassThroughReader<KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window,IN>
extends WindowReaderFunction<IN,IN,KEY,W>

A WindowReaderFunction that just emits each input element.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.state.api.functions.WindowReaderFunction

WindowReaderFunction.Context<W extends org.apache.flink.streaming.api.windowing.windows.Window>

Constructor Summary

Constructors

Constructor	Description
PassThroughReader()

Method Summary

Modifier and Type	Method	Description
void	readWindow(KEY key, WindowReaderFunction.Context<W> context, Iterable<IN> elements, org.apache.flink.util.Collector<IN> out)	Evaluates the window and outputs none or several elements.

Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

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

Constructor Details

PassThroughReader

public PassThroughReader()

Method Details

readWindow

public void readWindow(KEY key,
 WindowReaderFunction.Context<W> context,
 Iterable<IN> elements,
 org.apache.flink.util.Collector<IN> out)

Description copied from class: WindowReaderFunction

Evaluates the window and outputs none or several elements.

Specified by:

readWindow in class WindowReaderFunction<IN,IN,KEY,W extends org.apache.flink.streaming.api.windowing.windows.Window>

Parameters:

key - The key for which this window is evaluated.

context - The context in which the window is being evaluated.

elements - The elements in the window being evaluated.

out - A collector for emitting elements.