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 and 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

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Method Detail

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<CacheEntryView<K,V>>

Parameters:

o1 - the first CacheEntryView instance to be compared

o2 - the second CacheEntryView instance to be compared

Returns:

the result of comparison