org.janusgraph.olap

Class PageRankMapReduce

java.lang.Object

org.apache.tinkerpop.gremlin.process.computer.util.StaticMapReduce<Object,Double,Object,Double,Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>>>

org.janusgraph.olap.PageRankMapReduce

All Implemented Interfaces:

Cloneable, org.apache.tinkerpop.gremlin.process.computer.MapReduce<Object,Double,Object,Double,Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>>>

public class PageRankMapReduce
extends org.apache.tinkerpop.gremlin.process.computer.util.StaticMapReduce<Object,Double,Object,Double,Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>>>

This a copy of the TinkerPop 3 PR MR implementation.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PageRankMapReduce.Builder

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

org.apache.tinkerpop.gremlin.process.computer.MapReduce.MapEmitter<K,V>, org.apache.tinkerpop.gremlin.process.computer.MapReduce.NullObject, org.apache.tinkerpop.gremlin.process.computer.MapReduce.ReduceEmitter<OK,OV>, org.apache.tinkerpop.gremlin.process.computer.MapReduce.Stage

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_MEMORY_KEY
static String	PAGE_RANK_MEMORY_KEY

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

MAP_REDUCE

Method Summary

Modifier and Type	Method and Description
static PageRankMapReduce.Builder	build()
boolean	doStage(org.apache.tinkerpop.gremlin.process.computer.MapReduce.Stage stage)
Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>>	generateFinalResult(Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>> keyValues)
String	getMemoryKey()
void	loadState(org.apache.tinkerpop.gremlin.structure.Graph graph, org.apache.commons.configuration2.Configuration configuration)
void	map(org.apache.tinkerpop.gremlin.structure.Vertex vertex, org.apache.tinkerpop.gremlin.process.computer.MapReduce.MapEmitter<Object,Double> emitter)
void	storeState(org.apache.commons.configuration2.Configuration configuration)
String	toString()

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

clone, equals, hashCode

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

addResultToMemory, combine, createMapReduce, getMapKeySort, getReduceKeySort, reduce, workerEnd, workerStart

Field Detail

PAGE_RANK_MEMORY_KEY

public static final String PAGE_RANK_MEMORY_KEY

See Also:

Constant Field Values

DEFAULT_MEMORY_KEY

public static final String DEFAULT_MEMORY_KEY

See Also:

Constant Field Values

Method Detail

storeState

public void storeState(org.apache.commons.configuration2.Configuration configuration)

Specified by:

storeState in interface org.apache.tinkerpop.gremlin.process.computer.MapReduce<Object,Double,Object,Double,Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>>>

Overrides:

storeState in class org.apache.tinkerpop.gremlin.process.computer.util.StaticMapReduce<Object,Double,Object,Double,Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>>>

loadState

public void loadState(org.apache.tinkerpop.gremlin.structure.Graph graph,
                      org.apache.commons.configuration2.Configuration configuration)

doStage

public boolean doStage(org.apache.tinkerpop.gremlin.process.computer.MapReduce.Stage stage)

map

public void map(org.apache.tinkerpop.gremlin.structure.Vertex vertex,
                org.apache.tinkerpop.gremlin.process.computer.MapReduce.MapEmitter<Object,Double> emitter)

generateFinalResult

public Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>> generateFinalResult(Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>> keyValues)

getMemoryKey

public String getMemoryKey()

toString

public String toString()

Overrides:

toString in class org.apache.tinkerpop.gremlin.process.computer.util.StaticMapReduce<Object,Double,Object,Double,Iterator<org.apache.tinkerpop.gremlin.process.computer.KeyValue<Object,Double>>>

build

public static PageRankMapReduce.Builder build()