org.apache.flink.streaming.api.windowing.windows

Class Window

java.lang.Object

org.apache.flink.streaming.api.windowing.windows.Window

Direct Known Subclasses:

GlobalWindow, TimeWindow

@PublicEvolving
public abstract class Window
extends Object

A Window is a grouping of elements into finite buckets. Windows have a maximum timestamp which means that, at some point, all elements that go into one window will have arrived.

Subclasses should implement equals() and hashCode() so that logically same windows are treated the same.

Constructor Summary

Constructors

Constructor and Description
Window()

Method Summary

Modifier and Type	Method and Description
abstract long	maxTimestamp() Gets the largest timestamp that still belongs to this window.

Methods inherited from class java.lang.Object

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

Constructor Detail

Window

public Window()

Method Detail

maxTimestamp

public abstract long maxTimestamp()

Gets the largest timestamp that still belongs to this window.

Returns:

The largest timestamp that still belongs to this window.