org.apache.giraph.io.formats

Class PseudoRandomIntNullLocalEdgesHelper

java.lang.Object

org.apache.giraph.io.formats.PseudoRandomIntNullLocalEdgesHelper

public class PseudoRandomIntNullLocalEdgesHelper
extends Object

Helper class to generate pseudo-random local edges. Like PseudoRandomLocalEdgesHelper, but for graphs where vertex ids are integers.

Constructor Summary

Constructors

Constructor and Description
PseudoRandomIntNullLocalEdgesHelper(int numVertices, ImmutableClassesGiraphConfiguration conf) Constructor.

Method Summary

Modifier and Type	Method and Description
int	generateDestVertex(int sourceVertexId, Random rand) Generate a destination vertex id for the given source vertex, using the desired configuration for edge locality and the provided pseudo-random generator.

Methods inherited from class java.lang.Object

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

Constructor Detail

PseudoRandomIntNullLocalEdgesHelper

public PseudoRandomIntNullLocalEdgesHelper(int numVertices,
                                           ImmutableClassesGiraphConfiguration conf)

Constructor.

Parameters:

numVertices - Total number of vertices.

conf - Configuration.

Method Detail

generateDestVertex

public int generateDestVertex(int sourceVertexId,
                              Random rand)

Generate a destination vertex id for the given source vertex, using the desired configuration for edge locality and the provided pseudo-random generator.

Parameters:

sourceVertexId - Source vertex id.

rand - Pseudo-random generator.

Returns:

Destination vertex id.