org.apache.giraph.io.gora

Class GoraGVertexVertexOutputFormat.GoraGVertexVertexWriter

java.lang.Object

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

org.apache.giraph.io.VertexWriter<I,V,E>

org.apache.giraph.io.gora.GoraVertexOutputFormat.GoraVertexWriter

org.apache.giraph.io.gora.GoraGVertexVertexOutputFormat.GoraGVertexVertexWriter

All Implemented Interfaces:

GiraphConfigurationSettable<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.FloatWritable>, ImmutableClassesGiraphConfigurable<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.FloatWritable>, SimpleVertexWriter<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.FloatWritable>, org.apache.zookeeper.Watcher

Enclosing class:

GoraGVertexVertexOutputFormat

protected class GoraGVertexVertexOutputFormat.GoraGVertexVertexWriter
extends GoraVertexOutputFormat.GoraVertexWriter

Gora vertex writer.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.zookeeper.Watcher

org.apache.zookeeper.Watcher.Event

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GoraGVertexVertexWriter()

Method Summary

Modifier and Type	Method and Description
protected Object	getGoraKey(Vertex<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.FloatWritable> vertex) Gets the correct key from a computed vertex.
protected org.apache.gora.persistency.Persistent	getGoraVertex(Vertex<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.FloatWritable> vertex) Each vertex needs to be transformed into a Gora object to be sent to a specific data store.

Methods inherited from class org.apache.giraph.io.gora.GoraVertexOutputFormat.GoraVertexWriter

close, initialize, process, writeVertex

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, toString, wait, wait, wait

Constructor Detail

GoraGVertexVertexWriter

protected GoraGVertexVertexWriter()

Method Detail

getGoraVertex

protected org.apache.gora.persistency.Persistent getGoraVertex(Vertex<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.FloatWritable> vertex)

Description copied from class: GoraVertexOutputFormat.GoraVertexWriter

Each vertex needs to be transformed into a Gora object to be sent to a specific data store.

Specified by:

getGoraVertex in class GoraVertexOutputFormat.GoraVertexWriter

Parameters:

vertex - vertex to be transformed into a Gora object

Returns:

Gora representation of the vertex

getGoraKey

protected Object getGoraKey(Vertex<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.DoubleWritable,org.apache.hadoop.io.FloatWritable> vertex)

Description copied from class: GoraVertexOutputFormat.GoraVertexWriter

Gets the correct key from a computed vertex.

Specified by:

getGoraKey in class GoraVertexOutputFormat.GoraVertexWriter

Parameters:

vertex - vertex to extract the key from.

Returns:

The key representing such vertex