org.apache.hama.graph

Class GraphJobMessage

java.lang.Object

org.apache.hama.graph.GraphJobMessage

All Implemented Interfaces:

org.apache.hadoop.io.Writable

public final class GraphJobMessage
extends Object
implements org.apache.hadoop.io.Writable

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.

Field Summary

Fields

Modifier and Type	Field and Description
static Class<? extends org.apache.hadoop.io.Writable>	EDGE_VALUE_CLASS
static int	MAP_FLAG
static int	PARTITION_FLAG
static int	REPAIR_FLAG
static Class<?>	VERTEX_CLASS
static int	VERTEX_FLAG
static Class<? extends org.apache.hadoop.io.Writable>	VERTEX_ID_CLASS
static Class<? extends org.apache.hadoop.io.Writable>	VERTEX_VALUE_CLASS

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.hadoop.io.MapWritable	getMap()
Vertex<?,?,?>	getVertex()
org.apache.hadoop.io.Writable	getVertexId()
org.apache.hadoop.io.Writable	getVertexValue()
boolean	isMapMessage()
boolean	isPartitioningMessage()
boolean	isRepairMessage()
boolean	isVertexMessage()
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

REPAIR_FLAG

public static final int REPAIR_FLAG

See Also:

Constant Field Values

PARTITION_FLAG

public static final int PARTITION_FLAG

See Also:

Constant Field Values

VERTEX_CLASS

public static Class<?> VERTEX_CLASS

VERTEX_ID_CLASS

public static Class<? extends org.apache.hadoop.io.Writable> VERTEX_ID_CLASS

VERTEX_VALUE_CLASS

public static Class<? extends org.apache.hadoop.io.Writable> VERTEX_VALUE_CLASS

EDGE_VALUE_CLASS

public static Class<? extends org.apache.hadoop.io.Writable> EDGE_VALUE_CLASS

Constructor Detail

GraphJobMessage

public GraphJobMessage()

GraphJobMessage

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

GraphJobMessage

public GraphJobMessage(org.apache.hadoop.io.Writable vertexId)

GraphJobMessage

public GraphJobMessage(org.apache.hadoop.io.Writable vertexId,
               org.apache.hadoop.io.Writable vertexValue)

GraphJobMessage

public GraphJobMessage(Vertex<?,?,?> vertex)

Method Detail

write

public void write(DataOutput out)
           throws IOException

Specified by:

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

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

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

Throws:

IOException

getMap

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

getVertexId

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

getVertexValue

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

getVertex

public Vertex<?,?,?> getVertex()

isMapMessage

public boolean isMapMessage()

isVertexMessage

public boolean isVertexMessage()

isRepairMessage

public boolean isRepairMessage()

isPartitioningMessage

public boolean isPartitioningMessage()

toString

public String toString()

Overrides:

toString in class Object