ai.grakn.graql.internal.analytics

Class CountVertexProgram

java.lang.Object

ai.grakn.graql.internal.analytics.CommonOLAP

ai.grakn.graql.internal.analytics.GraknVertexProgram

ai.grakn.graql.internal.analytics.CountVertexProgram

All Implemented Interfaces:

Cloneable, org.apache.tinkerpop.gremlin.process.computer.VertexProgram

public class CountVertexProgram
extends GraknVertexProgram

This class is not used in analytics, as CountMapReduce is consistently faster.

Nested Class Summary

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

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

Field Summary

Fields

Modifier and Type	Field and Description
static String	COUNT

Fields inherited from class ai.grakn.graql.internal.analytics.CommonOLAP

analyticsElements

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

VERTEX_PROGRAM

Constructor Summary

Constructors

Constructor and Description
CountVertexProgram()
CountVertexProgram(Set<String> types)

Method Summary

Modifier and Type	Method and Description
Set<String>	getMemoryComputeKeys()
Set<org.apache.tinkerpop.gremlin.process.computer.MessageScope>	getMessageScopes(org.apache.tinkerpop.gremlin.process.computer.Memory memory)
void	safeExecute(org.apache.tinkerpop.gremlin.structure.Vertex vertex, org.apache.tinkerpop.gremlin.process.computer.Messenger messenger, org.apache.tinkerpop.gremlin.process.computer.Memory memory) An alternative to the execute method when ghost vertices are an issue.
void	setup(org.apache.tinkerpop.gremlin.process.computer.Memory memory)
boolean	terminate(org.apache.tinkerpop.gremlin.process.computer.Memory memory)

Methods inherited from class ai.grakn.graql.internal.analytics.GraknVertexProgram

clone, execute, getPreferredPersist, getPreferredResultGraph, storeState

Methods inherited from class ai.grakn.graql.internal.analytics.CommonOLAP

loadState, toString

Methods inherited from class java.lang.Object

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

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

createVertexProgram, getFeatures, getMapReducers, getMessageCombiner, getVertexComputeKeys, loadState, workerIterationEnd, workerIterationStart

Field Detail

COUNT

public static final String COUNT

See Also:

Constant Field Values

Constructor Detail

CountVertexProgram

public CountVertexProgram()

CountVertexProgram

public CountVertexProgram(Set<String> types)

Method Detail

getMessageScopes

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

Specified by:

getMessageScopes in interface org.apache.tinkerpop.gremlin.process.computer.VertexProgram

Overrides:

getMessageScopes in class GraknVertexProgram

setup

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

Specified by:

setup in interface org.apache.tinkerpop.gremlin.process.computer.VertexProgram

Overrides:

setup in class GraknVertexProgram

getMemoryComputeKeys

public Set<String> getMemoryComputeKeys()

safeExecute

public void safeExecute(org.apache.tinkerpop.gremlin.structure.Vertex vertex,
                        org.apache.tinkerpop.gremlin.process.computer.Messenger messenger,
                        org.apache.tinkerpop.gremlin.process.computer.Memory memory)

Description copied from class: GraknVertexProgram

An alternative to the execute method when ghost vertices are an issue. Our "Ghostbuster".

Parameters:

vertex - a vertex that may be a ghost

messenger - Tinker message passing object

memory - Tinker memory object

terminate

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