ProcessingTimeTriggers (Flink : 2.0-SNAPSHOT API)

java.lang.Object
- org.apache.flink.table.runtime.operators.window.groupwindow.triggers.ProcessingTimeTriggers

```
public class ProcessingTimeTriggers
extends Object
```
A Trigger that reacts to processing-time timers. The behavior can be one of the following:
- fire when the processing time passes the end of the window (afterEndOfWindow()),
- fire when the processing time advances by a certain interval after reception of the first element after the last firing for a given window (every(Duration)).
In the first case, the trigger can also specify an early 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 processing time passes the end of the window.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`ProcessingTimeTriggers.AfterEndOfWindow<W extends Window>`	A `Trigger` that fires once the current system time passes the end of the window to which a pane belongs.
`static class`	`ProcessingTimeTriggers.AfterEndOfWindowNoLate<W extends Window>`	A composite `Trigger` that consist of AfterEndOfWindow and a early trigger.
`static class`	`ProcessingTimeTriggers.AfterFirstElementPeriodic<W extends Window>`	Trigger every a given interval, the first trigger time is interval after the first element in the pane.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <W extends Window> ProcessingTimeTriggers.AfterEndOfWindow<W>`	`afterEndOfWindow()`	Creates a trigger that fires when the processing time passes the end of the window.
`static <W extends Window> ProcessingTimeTriggers.AfterFirstElementPeriodic<W>`	`every(Duration time)`	Creates a trigger that fires by a certain interval after reception of the first element.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - afterEndOfWindow
```
public static <W extends Window> ProcessingTimeTriggers.AfterEndOfWindow<W> afterEndOfWindow()
```
    Creates a trigger that fires when the processing time passes the end of the window.
  - every
```
public static <W extends Window> ProcessingTimeTriggers.AfterFirstElementPeriodic<W> every(Duration time)
```
    Creates a trigger that fires by a certain interval after reception of the first element.
    
    Parameters:
    
    time - the certain interval