com.hazelcast.internal.eviction.impl.strategy

Class AbstractEvictionStrategy<A,E extends Evictable,S extends EvictableStore<A,E>>

java.lang.Object

com.hazelcast.internal.eviction.impl.strategy.AbstractEvictionStrategy<A,E,S>

All Implemented Interfaces:

EvictionStrategy<A,E,S>

Direct Known Subclasses:

SamplingBasedEvictionStrategy

public abstract class AbstractEvictionStrategy<A,E extends Evictable,S extends EvictableStore<A,E>>
extends Object
implements EvictionStrategy<A,E,S>

Base class for eviction implementations to evict EvictableStore implementations as specified EvictionPolicyEvaluator.

Constructor Summary

Constructors

Constructor and Description
AbstractEvictionStrategy()

Method Summary

Modifier and Type	Method and Description
int	evict(S evictableStore, EvictionPolicyEvaluator<A,E> evictionPolicyEvaluator, EvictionChecker evictionChecker, EvictionListener<A,E> evictionListener) Does eviction if eviction is required by given EvictionChecker.
protected abstract int	evictInternal(S evictableStore, EvictionPolicyEvaluator<A,E> evictionPolicyEvaluator, EvictionListener<A,E> evictionListener) Does eviction internally.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractEvictionStrategy

public AbstractEvictionStrategy()

Method Detail

evict

public int evict(S evictableStore,
                 EvictionPolicyEvaluator<A,E> evictionPolicyEvaluator,
                 EvictionChecker evictionChecker,
                 EvictionListener<A,E> evictionListener)

Does eviction if eviction is required by given EvictionChecker.

Specified by:

evict in interface EvictionStrategy<A,E extends Evictable,S extends EvictableStore<A,E>>

Parameters:

evictableStore - Store that holds Evictable entries

evictionPolicyEvaluator - EvictionPolicyEvaluator to evaluate EvictionPolicy on entries

evictionChecker - EvictionChecker to make a decision about if eviction is required or not. If you want evict anyway, you can use EvictionChecker.EVICT_ALWAYS

evictionListener - EvictionListener to listen evicted entries

Returns:

evicted entry count

evictInternal

protected abstract int evictInternal(S evictableStore,
                                     EvictionPolicyEvaluator<A,E> evictionPolicyEvaluator,
                                     EvictionListener<A,E> evictionListener)

Does eviction internally.

Parameters:

evictableStore - Store that holds Evictable entries

evictionPolicyEvaluator - EvictionPolicyEvaluator to evaluate EvictionPolicy on entries

evictionListener - EvictionListener to listen evicted entries

Returns:

evicted entry count