com.hazelcast.map.merge

Class HigherHitsMapMergePolicy

java.lang.Object

com.hazelcast.map.merge.HigherHitsMapMergePolicy

All Implemented Interfaces:

MapMergePolicy, DataSerializable

public class HigherHitsMapMergePolicy
extends Object
implements MapMergePolicy, DataSerializable

Built-in MergePolicy implementation.

HigherHitsMapMergePolicy causes the merging entry to be merged from source to destination map if source entry has higher hits than the destination one.

See Also:

MapMergePolicy, PutIfAbsentMapMergePolicy, LatestUpdateMapMergePolicy, PassThroughMergePolicy

Constructor Summary

Constructors

Constructor and Description
HigherHitsMapMergePolicy()

Method Summary

Modifier and Type	Method and Description
Object	merge(String mapName, EntryView mergingEntry, EntryView existingEntry) Returns the value of the entry after the merge of entries with the same key.
void	readData(ObjectDataInput in)
void	writeData(ObjectDataOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

HigherHitsMapMergePolicy

public HigherHitsMapMergePolicy()

Method Detail

merge

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

Description copied from interface: MapMergePolicy

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

Specified by:

merge in interface MapMergePolicy

Parameters:

mapName - name of the 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 entry will be removed.

writeData

public void writeData(ObjectDataOutput out)
               throws IOException

Specified by:

writeData in interface DataSerializable

Throws:

IOException

readData

public void readData(ObjectDataInput in)
              throws IOException

Specified by:

readData in interface DataSerializable

Throws:

IOException