org.apache.giraph.conf

Class GiraphTypes<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

java.lang.Object

org.apache.giraph.conf.GiraphTypes<I,V,E>

Type Parameters:

I - Vertex ID class

V - Vertex Value class

E - Edge class

public class GiraphTypes<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>
extends Object

Holder for the generic types that describe user's graph.

Constructor Summary

Constructors

Constructor and Description
GiraphTypes() Empty Constructor
GiraphTypes(Class<I> vertexIdClass, Class<V> vertexValueClass, Class<E> edgeValueClass, Class<? extends org.apache.hadoop.io.Writable> incomingMessageValueClass, Class<? extends org.apache.hadoop.io.Writable> outgoingMessageValueClass) Constructor taking values

Method Summary

Modifier and Type	Method and Description
Class<E>	getEdgeValueClass()
Class<? extends Vertex>	getVertexClass()
Class<I>	getVertexIdClass()
Class<V>	getVertexValueClass()
boolean	hasData() Check if types are set
void	inferFrom(Class<? extends TypesHolder> klass) Infer types from Computation class
static <IX extends org.apache.hadoop.io.WritableComparable,VX extends org.apache.hadoop.io.Writable,EX extends org.apache.hadoop.io.Writable> GiraphTypes<IX,VX,EX>	readFrom(org.apache.hadoop.conf.Configuration conf) Read types from a Configuration.
void	setEdgeValueClass(Class<E> edgeValueClass)
void	setOutgoingMessageValueClass(Class<? extends org.apache.hadoop.io.Writable> outgoingMessageValueClass)
void	setVertexIdClass(Class<I> vertexIdClass)
void	setVertexValueClass(Class<V> vertexValueClass)
void	writeIfUnset(org.apache.hadoop.conf.Configuration conf) Write types to Configuration if not already set
void	writeTo(org.apache.hadoop.conf.Configuration conf) Write types to Configuration

Methods inherited from class java.lang.Object

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

Constructor Detail

GiraphTypes

public GiraphTypes()

Empty Constructor

GiraphTypes

public GiraphTypes(Class<I> vertexIdClass,
                   Class<V> vertexValueClass,
                   Class<E> edgeValueClass,
                   Class<? extends org.apache.hadoop.io.Writable> incomingMessageValueClass,
                   Class<? extends org.apache.hadoop.io.Writable> outgoingMessageValueClass)

Constructor taking values

Parameters:

vertexIdClass - vertex id class

vertexValueClass - vertex value class

edgeValueClass - edge value class

incomingMessageValueClass - incoming message class

outgoingMessageValueClass - outgoing message class

Method Detail

readFrom

public static <IX extends org.apache.hadoop.io.WritableComparable,VX extends org.apache.hadoop.io.Writable,EX extends org.apache.hadoop.io.Writable> GiraphTypes<IX,VX,EX> readFrom(org.apache.hadoop.conf.Configuration conf)

Read types from a Configuration. First tries to read them directly from the configuration options. If that doesn't work, tries to infer from TypesHolder.

Type Parameters:

IX - vertex id

VX - vertex value

EX - edge value

Parameters:

conf - Configuration

Returns:

GiraphTypes

inferFrom

public void inferFrom(Class<? extends TypesHolder> klass)

Infer types from Computation class

Parameters:

klass - Computation class

hasData

public boolean hasData()

Check if types are set

Returns:

true if types are set

writeTo

public void writeTo(org.apache.hadoop.conf.Configuration conf)

Write types to Configuration

Parameters:

conf - Configuration

writeIfUnset

public void writeIfUnset(org.apache.hadoop.conf.Configuration conf)

Write types to Configuration if not already set

Parameters:

conf - Configuration

getEdgeValueClass

public Class<E> getEdgeValueClass()

getVertexIdClass

public Class<I> getVertexIdClass()

getVertexValueClass

public Class<V> getVertexValueClass()

getVertexClass

public Class<? extends Vertex> getVertexClass()

setEdgeValueClass

public void setEdgeValueClass(Class<E> edgeValueClass)

setVertexIdClass

public void setVertexIdClass(Class<I> vertexIdClass)

setVertexValueClass

public void setVertexValueClass(Class<V> vertexValueClass)

setOutgoingMessageValueClass

public void setOutgoingMessageValueClass(Class<? extends org.apache.hadoop.io.Writable> outgoingMessageValueClass)