org.apache.hama.graph

Class GraphJobMessage

java.lang.Object

org.apache.hama.graph.GraphJobMessage

All Implemented Interfaces:

Comparable<GraphJobMessage>, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable<GraphJobMessage>

public final class GraphJobMessage
extends Object
implements org.apache.hadoop.io.WritableComparable<GraphJobMessage>

A message that is either MapWritable (for meta communication purposes) or a real message (vertex ID and value). It can be extended by adding flags, for example for a graph repair call.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GraphJobMessage.GraphJobMessageComparator

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAP_FLAG
static int	VERTEX_FLAG
static int	VERTICES_SIZE_FLAG

Constructor Summary

Constructors

Constructor and Description
GraphJobMessage()
GraphJobMessage(org.apache.hadoop.io.IntWritable size)
GraphJobMessage(org.apache.hadoop.io.MapWritable map)
GraphJobMessage(org.apache.hadoop.io.WritableComparable<?> vertexId, org.apache.hadoop.io.Writable vertexValue)

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(GraphJobMessage that)
void	fastReadFields(DataInput in)
org.apache.hadoop.io.MapWritable	getMap()
org.apache.hadoop.io.WritableComparable	getVertexId()
org.apache.hadoop.io.Writable	getVertexValue()
org.apache.hadoop.io.IntWritable	getVerticesSize()
boolean	isMapMessage()
boolean	isVertexMessage()
boolean	isVerticesSizeMessage()
void	readFields(DataInput in)
String	toString()
void	write(DataOutput out)

Methods inherited from class java.lang.Object

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

Field Detail

MAP_FLAG

public static final int MAP_FLAG

See Also:

Constant Field Values

VERTEX_FLAG

public static final int VERTEX_FLAG

See Also:

Constant Field Values

VERTICES_SIZE_FLAG

public static final int VERTICES_SIZE_FLAG

See Also:

Constant Field Values

Constructor Detail

GraphJobMessage

public GraphJobMessage()

GraphJobMessage

public GraphJobMessage(org.apache.hadoop.io.MapWritable map)

GraphJobMessage

public GraphJobMessage(org.apache.hadoop.io.WritableComparable<?> vertexId,
               org.apache.hadoop.io.Writable vertexValue)

GraphJobMessage

public GraphJobMessage(org.apache.hadoop.io.IntWritable size)

Method Detail

write

public void write(DataOutput out)
           throws IOException

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

IOException

fastReadFields

public void fastReadFields(DataInput in)
                    throws IOException

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

IOException

compareTo

public int compareTo(GraphJobMessage that)

Specified by:

compareTo in interface Comparable<GraphJobMessage>

getMap

public org.apache.hadoop.io.MapWritable getMap()

getVertexId

public org.apache.hadoop.io.WritableComparable getVertexId()

getVertexValue

public org.apache.hadoop.io.Writable getVertexValue()

getVerticesSize

public org.apache.hadoop.io.IntWritable getVerticesSize()

isMapMessage

public boolean isMapMessage()

isVertexMessage

public boolean isVertexMessage()

isVerticesSizeMessage

public boolean isVerticesSizeMessage()

toString

public String toString()

Overrides:

toString in class Object