org.apache.flink.streaming.api.windowing.policy

Class KeepAllEvictionPolicy<T>

java.lang.Object

org.apache.flink.streaming.api.windowing.policy.KeepAllEvictionPolicy<T>

All Implemented Interfaces:

Serializable, EvictionPolicy<T>

public class KeepAllEvictionPolicy<T>
extends Object
implements EvictionPolicy<T>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
KeepAllEvictionPolicy()

Method Summary

Modifier and Type	Method and Description
int	notifyEviction(T datapoint, boolean triggered, int bufferSize) Proves if and how many elements should be deleted from the element buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeepAllEvictionPolicy

public KeepAllEvictionPolicy()

Method Detail

notifyEviction

public int notifyEviction(T datapoint,
                          boolean triggered,
                          int bufferSize)

Description copied from interface: EvictionPolicy

Proves if and how many elements should be deleted from the element buffer. The eviction takes place after the trigger and after the call to the UDF but before the adding of the new data point.

Specified by:

notifyEviction in interface EvictionPolicy<T>

Parameters:

datapoint - data point the data point which arrived

triggered - Information whether the UDF was triggered or not

bufferSize - The current size of the element buffer at the operator

Returns:

The number of elements to be deleted from the buffer