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

Interface Summary

Interface	Description
ComputerResult	The result of the GraphComputer's computation.
GraphComputer	The GraphComputer is responsible for the execution of a VertexProgram and then a set of MapReduce jobs over the vertices in the Graph.
GraphComputer.Features
MapReduce<MK,MV,RK,RV,R>	A MapReduce is composed of map(), combine(), and reduce() stages.
MapReduce.MapEmitter<K,V>	The MapEmitter is used to emit key/value pairs from the map() stage of the MapReduce job.
MapReduce.ReduceEmitter<OK,OV>	The ReduceEmitter is used to emit key/value pairs from the combine() and reduce() stages of the MapReduce job.
Memory	The Memory of a GraphComputer is a global data structure where by vertices can communicate information with one another.
Memory.Admin	The Admin interface is used by the GraphComputer to update the Memory.
MessageCombiner<M>	A MessageCombiner allows two messages in route to the same vertex to be aggregated into a single message.
Messenger<M>	The Messenger serves as the routing system for messages between vertices.
VertexProgram<M>	A VertexProgram represents one component of a distributed graph computation.
VertexProgram.Builder
VertexProgram.Features

Class Summary

Class	Description
GraphComputer.Exceptions
KeyValue<K,V>
MapReduce.NullObject	A convenience singleton when a single key is needed so that all emitted values converge to the same combiner/reducer.
Memory.Exceptions
MessageScope	A MessageScope represents the range of a message.
MessageScope.Global	A Global message is directed at an arbitrary vertex in the graph.
MessageScope.Local<M>	A Local message is directed to an adjacent (or "memory adjacent") vertex.
MessageScope.Local.ReverseTraversalSupplier	A helper class that can be used to generate the reverse traversal of the traversal within a MessageScope.Local.

Enum Summary

Enum	Description
GraphComputer.Persist
GraphComputer.ResultGraph
MapReduce.Stage	MapReduce is composed of three stages: map, combine, and reduce.