org.apache.tinkerpop.gremlin.hadoop.process.computer.util

Class MemoryMapReduce

java.lang.Object

org.apache.tinkerpop.gremlin.process.computer.util.StaticMapReduce<MapReduce.NullObject,MapMemory,MapReduce.NullObject,MapMemory,MapMemory>

org.apache.tinkerpop.gremlin.hadoop.process.computer.util.MemoryMapReduce

All Implemented Interfaces:

Cloneable, MapReduce<MapReduce.NullObject,MapMemory,MapReduce.NullObject,MapMemory,MapMemory>

public final class MemoryMapReduce
extends StaticMapReduce<MapReduce.NullObject,MapMemory,MapReduce.NullObject,MapMemory,MapMemory>

Author:

Marko A. Rodriguez (http://markorodriguez.com)

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.tinkerpop.gremlin.process.computer.MapReduce

MapReduce.MapEmitter<K,V>, MapReduce.NullObject, MapReduce.ReduceEmitter<OK,OV>, MapReduce.Stage

Field Summary

Fields

Modifier and Type	Field and Description
Set<String>	memoryKeys

Fields inherited from interface org.apache.tinkerpop.gremlin.process.computer.MapReduce

MAP_REDUCE

Constructor Summary

Constructors

Constructor and Description
MemoryMapReduce(Set<String> memoryKeys)

Method Summary

Modifier and Type	Method and Description
void	addResultToMemory(Memory.Admin memory, Iterator<KeyValue<MapReduce.NullObject,MapMemory>> keyValues)
void	combine(MapReduce.NullObject key, Iterator<MapMemory> values, MapReduce.ReduceEmitter<MapReduce.NullObject,MapMemory> emitter)
boolean	doStage(MapReduce.Stage stage)
boolean	equals(Object object)
MapMemory	generateFinalResult(Iterator<KeyValue<MapReduce.NullObject,MapMemory>> keyValues)
String	getMemoryKey()
int	hashCode()
void	loadState(Graph graph, org.apache.commons.configuration.Configuration configuration)
void	map(Vertex vertex, MapReduce.MapEmitter<MapReduce.NullObject,MapMemory> emitter)
void	reduce(MapReduce.NullObject key, Iterator<MapMemory> values, MapReduce.ReduceEmitter<MapReduce.NullObject,MapMemory> emitter)
void	storeState(org.apache.commons.configuration.Configuration configuration)
String	toString()

Methods inherited from class org.apache.tinkerpop.gremlin.process.computer.util.StaticMapReduce

clone

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.tinkerpop.gremlin.process.computer.MapReduce

createMapReduce, getMapKeySort, getReduceKeySort, workerEnd, workerStart

Field Detail

memoryKeys

public Set<String> memoryKeys

Constructor Detail

MemoryMapReduce

public MemoryMapReduce(Set<String> memoryKeys)

Method Detail

getMemoryKey

public String getMemoryKey()

storeState

public void storeState(org.apache.commons.configuration.Configuration configuration)

Specified by:

storeState in interface MapReduce<MapReduce.NullObject,MapMemory,MapReduce.NullObject,MapMemory,MapMemory>

Overrides:

storeState in class StaticMapReduce<MapReduce.NullObject,MapMemory,MapReduce.NullObject,MapMemory,MapMemory>

loadState

public void loadState(Graph graph,
                      org.apache.commons.configuration.Configuration configuration)

doStage

public boolean doStage(MapReduce.Stage stage)

map

public void map(Vertex vertex,
                MapReduce.MapEmitter<MapReduce.NullObject,MapMemory> emitter)

combine

public void combine(MapReduce.NullObject key,
                    Iterator<MapMemory> values,
                    MapReduce.ReduceEmitter<MapReduce.NullObject,MapMemory> emitter)

reduce

public void reduce(MapReduce.NullObject key,
                   Iterator<MapMemory> values,
                   MapReduce.ReduceEmitter<MapReduce.NullObject,MapMemory> emitter)

generateFinalResult

public MapMemory generateFinalResult(Iterator<KeyValue<MapReduce.NullObject,MapMemory>> keyValues)

addResultToMemory

public void addResultToMemory(Memory.Admin memory,
                              Iterator<KeyValue<MapReduce.NullObject,MapMemory>> keyValues)

hashCode

public int hashCode()

Overrides:

hashCode in class StaticMapReduce<MapReduce.NullObject,MapMemory,MapReduce.NullObject,MapMemory,MapMemory>

equals

public boolean equals(Object object)

Overrides:

equals in class StaticMapReduce<MapReduce.NullObject,MapMemory,MapReduce.NullObject,MapMemory,MapMemory>

toString

public String toString()

Overrides:

toString in class StaticMapReduce<MapReduce.NullObject,MapMemory,MapReduce.NullObject,MapMemory,MapMemory>