org.apache.giraph.io.formats

Class JsonBase64VertexOutputFormat<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.io.OutputFormat<I,V,E>

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

org.apache.giraph.io.formats.TextVertexOutputFormat<I,V,E>

org.apache.giraph.io.formats.JsonBase64VertexOutputFormat<I,V,E>

Type Parameters:

I - Vertex index value

V - Vertex value

E - Edge value

All Implemented Interfaces:

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

public class JsonBase64VertexOutputFormat<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>
extends TextVertexOutputFormat<I,V,E>

Simple way to represent the structure of the graph with a JSON object. The actual vertex ids, values, edges are stored by the Writable serialized bytes that are Byte64 encoded. Works with JsonBase64VertexInputFormat

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	JsonBase64VertexOutputFormat.JsonBase64VertexWriter Simple writer that supports JsonBase64VertexOutputFormat

Nested classes/interfaces inherited from class org.apache.giraph.io.formats.TextVertexOutputFormat

TextVertexOutputFormat.TextVertexWriter, TextVertexOutputFormat.TextVertexWriterToEachLine

Field Summary

Fields inherited from class org.apache.giraph.io.formats.TextVertexOutputFormat

textOutputFormat

Constructor Summary

Constructors

Constructor and Description
JsonBase64VertexOutputFormat()

Method Summary

Modifier and Type	Method and Description
TextVertexOutputFormat.TextVertexWriter	createVertexWriter(org.apache.hadoop.mapreduce.TaskAttemptContext context) The factory method which produces the TextVertexOutputFormat.TextVertexWriter used by this output format.

Methods inherited from class org.apache.giraph.io.formats.TextVertexOutputFormat

checkOutputSpecs, getOutputCommitter

Methods inherited from class org.apache.giraph.io.OutputFormat

postWriting, preWriting

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

JsonBase64VertexOutputFormat

public JsonBase64VertexOutputFormat()

Method Detail

createVertexWriter

public TextVertexOutputFormat.TextVertexWriter createVertexWriter(org.apache.hadoop.mapreduce.TaskAttemptContext context)

Description copied from class: TextVertexOutputFormat

The factory method which produces the TextVertexOutputFormat.TextVertexWriter used by this output format.

Specified by:

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

Parameters:

context - the information about the task

Returns:

the text vertex writer to be used