com.hazelcast.replicatedmap.merge

Interface ReplicatedMapMergePolicy

All Superinterfaces:

Serializable

All Known Implementing Classes:

HigherHitsMapMergePolicy, LatestUpdateMapMergePolicy, PassThroughMergePolicy, PutIfAbsentMapMergePolicy

public interface ReplicatedMapMergePolicy
extends Serializable

A policy for merging replicated maps after a split-brain was detected and the different network partitions need to be merged.

See Also:

HigherHitsMapMergePolicy, PutIfAbsentMapMergePolicy, LatestUpdateMapMergePolicy, PassThroughMergePolicy

Method Summary

Modifier and Type	Method and Description
Object	merge(String mapName, ReplicatedMapEntryView mergingEntry, ReplicatedMapEntryView existingEntry) Returns the value of the entry after the merge of entries with the same key.

Method Detail

merge

Object merge(String mapName,
             ReplicatedMapEntryView mergingEntry,
             ReplicatedMapEntryView existingEntry)

Returns the value of the entry after the merge of entries with the same key. You should consider the case where existingEntry's value is null.

Parameters:

mapName - name of the replicated map

mergingEntry - entry merging into the destination cluster

existingEntry - existing entry in the destination cluster

Returns:

final value of the entry. If returns null, then the entry will be removed.