程序包 org.apache.pulsar.functions.windowing.triggers

类 CountTriggerPolicy<T>

java.lang.Object

org.apache.pulsar.functions.windowing.triggers.CountTriggerPolicy<T>

类型参数:

T - the type of event tracked by this policy.

所有已实现的接口:

TriggerPolicy<T,Integer>

public class CountTriggerPolicy<T>
extends Object
implements TriggerPolicy<T,Integer>

A trigger that tracks event counts and calls back TriggerHandler.onTrigger() when the count threshold is hit.

构造器概要

构造器

构造器	说明
CountTriggerPolicy(int count, TriggerHandler handler, EvictionPolicy<T,?> evictionPolicy)

方法概要

修饰符和类型	方法	说明
Integer	getState()	Return runtime state to be checkpointed by the framework for restoring the trigger policy in case of failures.
void	reset()	resets the trigger policy.
void	restoreState(Integer state)	Restore the trigger policy from the state that was earlier checkpointed by the framework.
void	shutdown()	Any clean up could be handled here.
void	start()	Starts the trigger policy.
String	toString()
void	track(Event<T> event)	Tracks the event and could use this to invoke the trigger.

从类继承的方法 java.lang.Object

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

构造器详细资料

CountTriggerPolicy

public CountTriggerPolicy(int count,
 TriggerHandler handler,
 EvictionPolicy<T,?> evictionPolicy)

方法详细资料

track

public void track(Event<T> event)

从接口复制的说明: TriggerPolicy

Tracks the event and could use this to invoke the trigger.

指定者:

track 在接口中 TriggerPolicy<T,Integer>

参数:

event - the input event

reset

public void reset()

从接口复制的说明: TriggerPolicy

resets the trigger policy.

指定者:

reset 在接口中 TriggerPolicy<T,Integer>

start

public void start()

从接口复制的说明: TriggerPolicy

Starts the trigger policy. This can be used during recovery to start the triggers after recovery is complete.

指定者:

start 在接口中 TriggerPolicy<T,Integer>

shutdown

public void shutdown()

从接口复制的说明: TriggerPolicy

Any clean up could be handled here.

指定者:

shutdown 在接口中 TriggerPolicy<T,Integer>

getState

public Integer getState()

从接口复制的说明: TriggerPolicy

Return runtime state to be checkpointed by the framework for restoring the trigger policy in case of failures.

指定者:

getState 在接口中 TriggerPolicy<T,Integer>

返回:

the state

restoreState

public void restoreState(Integer state)

从接口复制的说明: TriggerPolicy

Restore the trigger policy from the state that was earlier checkpointed by the framework.

指定者:

restoreState 在接口中 TriggerPolicy<T,Integer>

参数:

state - the state

toString

public String toString()

覆盖:

toString 在类中 Object