Package org.apache.flink.table.runtime.operators.window.groupwindow.triggers

Class EventTimeTriggers

java.lang.Object

org.apache.flink.table.runtime.operators.window.groupwindow.triggers.EventTimeTriggers

public class EventTimeTriggers
extends Object

A Trigger that reacts to event-time timers. The behavior can be one of the following:

• fire when the watermark passes the end of the window (afterEndOfWindow()),

In the first case, the trigger can also specify an early and a late trigger. The early trigger will be responsible for specifying when the trigger should fire in the period between the beginning of the window and the time when the watermark passes the end of the window. The late trigger takes over after the watermark passes the end of the window, and specifies when the trigger should fire in the period between the endOfWindow and endOfWindow + allowedLateness.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	EventTimeTriggers.AfterEndOfWindow<W extends Window>	A Trigger that fires once the watermark passes the end of the window to which a pane belongs.
static final class	EventTimeTriggers.AfterEndOfWindowEarlyAndLate<W extends Window>	A composite Trigger that consist of AfterEndOfWindow and a early trigger and late trigger.
static final class	EventTimeTriggers.AfterEndOfWindowNoLate<W extends Window>	A composite Trigger that consist of AfterEndOfWindow and a late trigger.

Method Summary

Modifier and Type	Method	Description
static <W extends Window> EventTimeTriggers.AfterEndOfWindow<W>	afterEndOfWindow()	Creates a trigger that fires when the watermark passes the end of the window.

Methods inherited from class java.lang.Object

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

Method Details

afterEndOfWindow

public static <W extends Window>
EventTimeTriggers.AfterEndOfWindow<W> afterEndOfWindow()

Creates a trigger that fires when the watermark passes the end of the window.