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

Class ActiveCloneableEvictionPolicyWrapper<DATA>

java.lang.Object

org.apache.flink.streaming.api.windowing.policy.ActiveEvictionPolicyWrapper<DATA>

org.apache.flink.streaming.api.windowing.policy.ActiveCloneableEvictionPolicyWrapper<DATA>

Type Parameters:

DATA - The data type handled by this policy

All Implemented Interfaces:

Serializable, Cloneable, ActiveEvictionPolicy<DATA>, CloneableEvictionPolicy<DATA>, EvictionPolicy<DATA>

public class ActiveCloneableEvictionPolicyWrapper<DATA>
extends ActiveEvictionPolicyWrapper<DATA>
implements CloneableEvictionPolicy<DATA>

The ActiveEvictionPolicy wraps around a non active EvictionPolicy. It forwards all calls to ActiveEvictionPolicy.notifyEvictionWithFakeElement(Object, int) to EvictionPolicy.notifyEviction(Object, boolean, int) while the triggered parameter will be set to true. This class additionally implements the clone method and can wrap around CloneableEvictionPolicy to make it active.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ActiveCloneableEvictionPolicyWrapper(CloneableEvictionPolicy<DATA> nestedPolicy) Creates a wrapper which activates the eviction policy which is wrapped in.

Method Summary

Modifier and Type	Method and Description
ActiveCloneableEvictionPolicyWrapper<DATA>	clone() This method should return an exact copy of the object it belongs to including the current object state.

Methods inherited from class org.apache.flink.streaming.api.windowing.policy.ActiveEvictionPolicyWrapper

notifyEviction, notifyEvictionWithFakeElement

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.api.windowing.policy.EvictionPolicy

notifyEviction

Constructor Detail

ActiveCloneableEvictionPolicyWrapper

public ActiveCloneableEvictionPolicyWrapper(CloneableEvictionPolicy<DATA> nestedPolicy)

Creates a wrapper which activates the eviction policy which is wrapped in. This means that the nested policy will get called on fake elements as well as on real elements. This specialized version of the ActiveEvictionPolicyWrapper works with CloneableEvictionPolicy and is thereby cloneable as well.

Parameters:

nestedPolicy - The policy which should be activated/wrapped in.

Method Detail

clone

public ActiveCloneableEvictionPolicyWrapper<DATA> clone()

Description copied from interface: CloneableEvictionPolicy

This method should return an exact copy of the object it belongs to including the current object state.

Specified by:

clone in interface CloneableEvictionPolicy<DATA>

Overrides:

clone in class Object

Returns:

a copy of this object