org.apache.flink.table.runtime.operators.bundle.trigger

接口 BundleTrigger<T>

类型参数:

T - The input element type.

所有超级接口:

Serializable

所有已知实现类:

CountBundleTrigger

@Internal
public interface BundleTrigger<T>
extends Serializable

A BundleTrigger determines when a bundle of input elements should be evaluated and trigger the callback which registered previously.

方法概要

限定符和类型	方法和说明
String	explain()
void	onElement(T element) Called for every element that gets added to the bundle.
void	registerCallback(BundleTriggerCallback callback) Register a callback which will be called once this trigger decides to finish this bundle.
void	reset() Reset the trigger to its initiate status.

方法详细资料

registerCallback

void registerCallback(BundleTriggerCallback callback)

Register a callback which will be called once this trigger decides to finish this bundle.

onElement

void onElement(T element)
        throws Exception

Called for every element that gets added to the bundle. If the trigger decides to start evaluate the input, BundleTriggerCallback.finishBundle() should be invoked.

参数:

element - The element that arrived.

抛出:

Exception

reset

void reset()

Reset the trigger to its initiate status.

explain

String explain()