org.apache.giraph.graph

Class ByteValueVertex<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.DefaultImmutableClassesGiraphConfigurable<I,V,E>

org.apache.giraph.graph.DefaultVertex<I,V,E>

org.apache.giraph.graph.ByteValueVertex<I,V,E>

Type Parameters:

I - Vertex id

V - Vertex data

E - Edge data

All Implemented Interfaces:

GiraphConfigurationSettable<I,V,E>, ImmutableClassesGiraphConfigurable<I,V,E>, Vertex<I,V,E>, Trimmable

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

Special version of vertex that holds the value in raw byte form to save memory.

Constructor Summary

Constructors

Constructor and Description
ByteValueVertex()

Method Summary

Modifier and Type	Method and Description
V	getValue() Get the vertex value (data stored with vertex)
void	initialize(I id, V value) Initialize id and value.
void	initialize(I id, V value, Iterable<Edge<I,E>> edges) Initialize id, value, and edges.
void	setValue(V value) Set the vertex data (immediately visible in the computation)
void	unwrapMutableEdges() If a MutableEdgesWrapper was used to provide a mutable iterator, copy any remaining edges to the new OutEdges data structure and keep a direct reference to it (thus discarding the wrapper).

Methods inherited from class org.apache.giraph.graph.DefaultVertex

addEdge, getAllEdgeValues, getEdges, getEdgeValue, getId, getMutableEdges, getNumEdges, isHalted, removeEdges, setEdges, setEdgeValue, toString, trim, voteToHalt, wakeUp

Methods inherited from class org.apache.giraph.conf.DefaultImmutableClassesGiraphConfigurable

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.giraph.conf.ImmutableClassesGiraphConfigurable

getConf

Methods inherited from interface org.apache.giraph.conf.GiraphConfigurationSettable

setConf

Constructor Detail

ByteValueVertex

public ByteValueVertex()

Method Detail

getValue

public V getValue()

Description copied from interface: Vertex

Get the vertex value (data stored with vertex)

Specified by:

getValue in interface Vertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Overrides:

getValue in class DefaultVertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Returns:

Vertex value

setValue

public void setValue(V value)

Description copied from interface: Vertex

Set the vertex data (immediately visible in the computation)

Specified by:

setValue in interface Vertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Overrides:

setValue in class DefaultVertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Parameters:

value - Vertex data to be set

initialize

public void initialize(I id,
                       V value,
                       Iterable<Edge<I,E>> edges)

Description copied from interface: Vertex

Initialize id, value, and edges. This method (or the alternative form initialize(id, value)) must be called after instantiation, unless readFields() is called.

Specified by:

initialize in interface Vertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Overrides:

initialize in class DefaultVertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Parameters:

id - Vertex id

value - Vertex value

edges - Iterable of edges

initialize

public void initialize(I id,
                       V value)

Description copied from interface: Vertex

Initialize id and value. Vertex edges will be empty. This method (or the alternative form initialize(id, value, edges)) must be called after instantiation, unless readFields() is called.

Specified by:

initialize in interface Vertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Overrides:

initialize in class DefaultVertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Parameters:

id - Vertex id

value - Vertex value

unwrapMutableEdges

public void unwrapMutableEdges()

Description copied from interface: Vertex

If a MutableEdgesWrapper was used to provide a mutable iterator, copy any remaining edges to the new OutEdges data structure and keep a direct reference to it (thus discarding the wrapper). Called by the Giraph infrastructure after computation.

Specified by:

unwrapMutableEdges in interface Vertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>

Overrides:

unwrapMutableEdges in class DefaultVertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>