pyflink.datastream.window.PurgingTrigger

class PurgingTrigger(nested_trigger: Trigger[T, Window])

A trigger that can turn any Trigger into a purging Trigger. When the nested trigger fires, this will return a FIRE_AND_PURGE TriggerResult.

Methods

can_merge()	Note If this returns true you must properly implement on_merge()
clear(window, ctx)	Clears any state that the trigger might still hold for the given window.
of(nested_trigger)
on_element(element, timestamp, window, ctx)	Called for every element that gets added to a pane.
on_event_time(time, window, ctx)	Called when an event-time timer that was set using the trigger context fires.
on_merge(window, ctx)	Called when several windows have been merged into one window by the WindowAssigner.
on_processing_time(time, window, ctx)	Called when a processing-time timer that was set using the trigger context fires.