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

Class CountCoBundleTrigger<IN1,IN2>

java.lang.Object

org.apache.flink.table.runtime.operators.bundle.trigger.CountCoBundleTrigger<IN1,IN2>

All Implemented Interfaces:

Serializable, CoBundleTrigger<IN1,IN2>

public class CountCoBundleTrigger<IN1,IN2>
extends Object
implements CoBundleTrigger<IN1,IN2>

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

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
CountCoBundleTrigger(long maxCount)

Method Summary

Modifier and Type	Method	Description
String	explain()
void	onElement1(IN1 element)	Called for every element that gets added to the bundle from the first input.
void	onElement2(IN2 element)	Called for every element that gets added to the bundle from the second input.
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

CountCoBundleTrigger

public CountCoBundleTrigger(long maxCount)

Method Details

registerCallback

public void registerCallback(BundleTriggerCallback callback)

Description copied from interface: CoBundleTrigger

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

Specified by:

registerCallback in interface CoBundleTrigger<IN1,IN2>

onElement1

public void onElement1(IN1 element)
                throws Exception

Description copied from interface: CoBundleTrigger

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

Specified by:

onElement1 in interface CoBundleTrigger<IN1,IN2>

Parameters:

element - The element that arrived from the first input.

Throws:

Exception

onElement2

public void onElement2(IN2 element)
                throws Exception

Description copied from interface: CoBundleTrigger

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

Specified by:

onElement2 in interface CoBundleTrigger<IN1,IN2>

Parameters:

element - The element that arrived from the second input.

Throws:

Exception

reset

public void reset()

Description copied from interface: CoBundleTrigger

Reset the trigger to its initiate status.

Specified by:

reset in interface CoBundleTrigger<IN1,IN2>

explain

public String explain()

Specified by:

explain in interface CoBundleTrigger<IN1,IN2>