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

Class CountBundleTrigger<T>

java.lang.Object

org.apache.flink.table.runtime.operators.bundle.trigger.CountBundleTrigger<T>

All Implemented Interfaces:

Serializable, BundleTrigger<T>

public class CountBundleTrigger<T>
extends Object
implements BundleTrigger<T>

A BundleTrigger that fires once the count of elements in a bundle reaches the given count.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
CountBundleTrigger(long maxCount)

Method Summary

Modifier and Type	Method	Description
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.

Methods inherited from class java.lang.Object

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

Constructor Details

CountBundleTrigger

public CountBundleTrigger(long maxCount)

Method Details

registerCallback

public void registerCallback(BundleTriggerCallback callback)

Description copied from interface: BundleTrigger

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

Specified by:

registerCallback in interface BundleTrigger<T>

onElement

public void onElement(T element)
               throws Exception

Description copied from interface: BundleTrigger

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

Specified by:

onElement in interface BundleTrigger<T>

Parameters:

element - The element that arrived.

Throws:

Exception

reset

public void reset()

Description copied from interface: BundleTrigger

Reset the trigger to its initiate status.

Specified by:

reset in interface BundleTrigger<T>

explain

public String explain()

Specified by:

explain in interface BundleTrigger<T>