Package org.apache.tinkerpop.gremlin.process.computer

Class MessageScope.Local<M>

java.lang.Object

org.apache.tinkerpop.gremlin.process.computer.MessageScope

org.apache.tinkerpop.gremlin.process.computer.MessageScope.Local<M>

Type Parameters:

M - The VertexProgram message class

Enclosing class:

MessageScope

public static final class MessageScope.Local<M>
extends MessageScope

A Local message is directed to an adjacent (or "memory adjacent") vertex. The adjacent vertex set is defined by the provided Traversal that dictates how to go from the sending vertex to the receiving vertex. This is the preferred message scope as it can potentially be optimized by the underlying Messenger implementation. The preferred optimization is to not distribute a message object to all adjacent vertices. Instead, allow the recipients to read a single message object stored at the "sending" vertex. This is possible via `Traversal.reverse()`. This optimizations greatly reduces the amount of data created in the computation.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MessageScope.Local.ReverseTraversalSupplier	A helper class that can be used to generate the reverse traversal of the traversal within a MessageScope.Local.

Nested classes/interfaces inherited from class org.apache.tinkerpop.gremlin.process.computer.MessageScope

MessageScope.Global, MessageScope.Local<M>

Field Summary

Fields

Modifier and Type	Field	Description
final BiFunction<M,Edge,M>	edgeFunction
final Supplier<? extends Traversal<Vertex,Edge>>	incidentTraversal

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object other)
BiFunction<M,Edge,M>	getEdgeFunction()
Supplier<? extends Traversal<Vertex,Edge>>	getIncidentTraversal()
int	hashCode()
static <M> MessageScope.Local<M>	of(Supplier<? extends Traversal<Vertex,Edge>> incidentTraversal)
static <M> MessageScope.Local<M>	of(Supplier<? extends Traversal<Vertex,Edge>> incidentTraversal, BiFunction<M,Edge,M> edgeFunction)

Methods inherited from class java.lang.Object

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

Field Details

incidentTraversal

public final Supplier<? extends Traversal<Vertex,Edge>> incidentTraversal

edgeFunction

public final BiFunction<M,Edge,M> edgeFunction

Method Details

of

public static <M> MessageScope.Local<M> of(Supplier<? extends Traversal<Vertex,Edge>> incidentTraversal)

of

public static <M> MessageScope.Local<M> of(Supplier<? extends Traversal<Vertex,Edge>> incidentTraversal,
 BiFunction<M,Edge,M> edgeFunction)

getEdgeFunction

public BiFunction<M,Edge,M> getEdgeFunction()

getIncidentTraversal

public Supplier<? extends Traversal<Vertex,Edge>> getIncidentTraversal()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object