com.hazelcast.replicatedmap.merge

Class PutIfAbsentMapMergePolicy

java.lang.Object

com.hazelcast.replicatedmap.merge.PutIfAbsentMapMergePolicy

All Implemented Interfaces:

ReplicatedMapMergePolicy, Serializable

public class PutIfAbsentMapMergePolicy
extends Object
implements ReplicatedMapMergePolicy

PutIfAbsentMapMergePolicy causes the merging entry to be merged from source to destination map if it does not exist in the destination map.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PutIfAbsentMapMergePolicy()

Method Summary

Methods

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.

Methods inherited from class java.lang.Object

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

Constructor Detail

PutIfAbsentMapMergePolicy

public PutIfAbsentMapMergePolicy()

Method Detail

merge

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

Description copied from interface: ReplicatedMapMergePolicy

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.

Specified by:

merge in interface ReplicatedMapMergePolicy

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.