org.apache.flink.streaming.runtime.operators.windowing

Class WindowOperator.WindowContext

java.lang.Object

org.apache.flink.streaming.runtime.operators.windowing.WindowOperator.WindowContext

All Implemented Interfaces:

Serializable, InternalWindowFunction.InternalWindowContext

Enclosing class:

WindowOperator<K,IN,ACC,OUT,W extends Window>

public class WindowOperator.WindowContext
extends Object
implements InternalWindowFunction.InternalWindowContext

A utility class for handling ProcessWindowFunction invocations. This can be reused by setting the key and window fields. No internal state must be kept in the WindowContext.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected W	window
protected WindowOperator.AbstractPerWindowStateStore	windowState

Constructor Summary

Constructors

Constructor and Description
WindowContext(W window)

Method Summary

Modifier and Type	Method and Description
void	clear()
long	currentProcessingTime()
long	currentWatermark()
KeyedStateStore	globalState()
<X> void	output(OutputTag<X> outputTag, X value)
String	toString()
KeyedStateStore	windowState()

Methods inherited from class java.lang.Object

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

Field Detail

window

protected W extends Window window

windowState

protected WindowOperator.AbstractPerWindowStateStore windowState

Constructor Detail

WindowContext

public WindowContext(W window)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

clear

public void clear()
           throws Exception

Throws:

Exception

currentProcessingTime

public long currentProcessingTime()

Specified by:

currentProcessingTime in interface InternalWindowFunction.InternalWindowContext

currentWatermark

public long currentWatermark()

Specified by:

currentWatermark in interface InternalWindowFunction.InternalWindowContext

windowState

public KeyedStateStore windowState()

Specified by:

windowState in interface InternalWindowFunction.InternalWindowContext

globalState

public KeyedStateStore globalState()

Specified by:

globalState in interface InternalWindowFunction.InternalWindowContext

output

public <X> void output(OutputTag<X> outputTag,
                       X value)

Specified by:

output in interface InternalWindowFunction.InternalWindowContext