org.janusgraph.olap

Class PageRankVertexProgram

java.lang.Object

org.apache.tinkerpop.gremlin.process.computer.util.StaticVertexProgram<Double>

org.janusgraph.olap.PageRankVertexProgram

All Implemented Interfaces:

Cloneable, org.apache.tinkerpop.gremlin.process.computer.VertexProgram<Double>

public class PageRankVertexProgram
extends org.apache.tinkerpop.gremlin.process.computer.util.StaticVertexProgram<Double>

This implementation is only intended for testing.

Limitations:

• Ignores edge labels
• Assumes there is at most one edge (of any label) between any vertex pair

This is almost an exact copy of the TinkerPop 3 PR implementation.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PageRankVertexProgram.Builder

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

org.apache.tinkerpop.gremlin.process.computer.VertexProgram.Features

Field Summary

Fields

Modifier and Type	Field and Description
static String	OUTGOING_EDGE_COUNT
static String	PAGE_RANK

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

VERTEX_PROGRAM

Constructor Summary

Constructors

Constructor and Description
PageRankVertexProgram()

Method Summary

Modifier and Type	Method and Description
static PageRankVertexProgram.Builder	build()
void	execute(org.apache.tinkerpop.gremlin.structure.Vertex vertex, org.apache.tinkerpop.gremlin.process.computer.Messenger<Double> messenger, org.apache.tinkerpop.gremlin.process.computer.Memory memory)
org.apache.tinkerpop.gremlin.process.computer.VertexProgram.Features	getFeatures()
Set<org.apache.tinkerpop.gremlin.process.computer.MessageScope>	getMessageScopes(org.apache.tinkerpop.gremlin.process.computer.Memory memory)
org.apache.tinkerpop.gremlin.process.computer.GraphComputer.Persist	getPreferredPersist()
org.apache.tinkerpop.gremlin.process.computer.GraphComputer.ResultGraph	getPreferredResultGraph()
Set<org.apache.tinkerpop.gremlin.process.computer.VertexComputeKey>	getVertexComputeKeys()
void	loadState(org.apache.tinkerpop.gremlin.structure.Graph graph, org.apache.commons.configuration2.Configuration configuration)
void	setup(org.apache.tinkerpop.gremlin.process.computer.Memory memory)
void	storeState(org.apache.commons.configuration2.Configuration configuration)
boolean	terminate(org.apache.tinkerpop.gremlin.process.computer.Memory memory)

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

clone

Methods inherited from class java.lang.Object

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

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

createVertexProgram, getMapReducers, getMemoryComputeKeys, getMessageCombiner, getTraverserRequirements, workerIterationEnd, workerIterationStart

Field Detail

PAGE_RANK

public static final String PAGE_RANK

See Also:

Constant Field Values

OUTGOING_EDGE_COUNT

public static final String OUTGOING_EDGE_COUNT

See Also:

Constant Field Values

Constructor Detail

PageRankVertexProgram

public PageRankVertexProgram()

Method Detail

loadState

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

storeState

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

Specified by:

storeState in interface org.apache.tinkerpop.gremlin.process.computer.VertexProgram<Double>

Overrides:

storeState in class org.apache.tinkerpop.gremlin.process.computer.util.StaticVertexProgram<Double>

getVertexComputeKeys

public Set<org.apache.tinkerpop.gremlin.process.computer.VertexComputeKey> getVertexComputeKeys()

setup

public void setup(org.apache.tinkerpop.gremlin.process.computer.Memory memory)

execute

public void execute(org.apache.tinkerpop.gremlin.structure.Vertex vertex,
                    org.apache.tinkerpop.gremlin.process.computer.Messenger<Double> messenger,
                    org.apache.tinkerpop.gremlin.process.computer.Memory memory)

terminate

public boolean terminate(org.apache.tinkerpop.gremlin.process.computer.Memory memory)

getMessageScopes

public Set<org.apache.tinkerpop.gremlin.process.computer.MessageScope> getMessageScopes(org.apache.tinkerpop.gremlin.process.computer.Memory memory)

getPreferredResultGraph

public org.apache.tinkerpop.gremlin.process.computer.GraphComputer.ResultGraph getPreferredResultGraph()

getPreferredPersist

public org.apache.tinkerpop.gremlin.process.computer.GraphComputer.Persist getPreferredPersist()

getFeatures

public org.apache.tinkerpop.gremlin.process.computer.VertexProgram.Features getFeatures()

build

public static PageRankVertexProgram.Builder build()