Package com.hazelcast.cache

Interface CacheEvictionPolicyComparator<K,V>

Type Parameters:

K - type of the key

V - type of the value

All Superinterfaces:

Comparator<CacheEntryView<K,V>>, EvictionPolicyComparator<K,V,CacheEntryView<K,V>>, Serializable

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface CacheEvictionPolicyComparator<K,V>
extends EvictionPolicyComparator<K,V,CacheEntryView<K,V>>

ICache specific EvictionPolicyComparator for comparing CacheEntryViews to be evicted. Implementors of the comparator have to implement equals and hashCode methods to support correct config comparison.

See Also:

• EvictionPolicyComparator
• CacheEntryView

Method Summary

Modifier and Type	Method	Description
int	compare(CacheEntryView<K,V> o1, CacheEntryView<K,V> o2)	Compares the given CacheEntryView instances and returns the result.

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Method Details

compare

int compare(CacheEntryView<K,V> o1,
 CacheEntryView<K,V> o2)

Compares the given CacheEntryView instances and returns the result. The result should be one of

• -1: first entry has higher priority to be evicted
• 1: second entry has higher priority to be evicted
• 0: both entries have same priority

Specified by:

compare in interface Comparator<K>

Parameters:

o1 - the first CacheEntryView instance to be compared

o2 - the second CacheEntryView instance to be compared

Returns:

the result of comparison