com.thinkaurelius.titan.hadoop.formats.graphson

Class GraphSONRecordReader

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,FaunusVertex>

com.thinkaurelius.titan.hadoop.formats.graphson.GraphSONRecordReader

All Implemented Interfaces:

Closeable, AutoCloseable

public class GraphSONRecordReader
extends org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,FaunusVertex>

Author:

Marko A. Rodriguez (http://markorodriguez.com)

Constructor Summary

Constructors

Constructor and Description
GraphSONRecordReader(VertexQueryFilter vertexQuery)

Method Summary

Modifier and Type	Method and Description
void	close()
org.apache.hadoop.io.NullWritable	getCurrentKey()
FaunusVertex	getCurrentValue()
float	getProgress()
void	initialize(org.apache.hadoop.mapreduce.InputSplit genericSplit, org.apache.hadoop.mapreduce.TaskAttemptContext context)
boolean	nextKeyValue()

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphSONRecordReader

public GraphSONRecordReader(VertexQueryFilter vertexQuery)

Method Detail

initialize

public void initialize(org.apache.hadoop.mapreduce.InputSplit genericSplit,
                       org.apache.hadoop.mapreduce.TaskAttemptContext context)
                throws IOException

Specified by:

initialize in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,FaunusVertex>

Throws:

IOException

nextKeyValue

public boolean nextKeyValue()
                     throws IOException

Specified by:

nextKeyValue in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,FaunusVertex>

Throws:

IOException

getCurrentKey

public org.apache.hadoop.io.NullWritable getCurrentKey()

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,FaunusVertex>

getCurrentValue

public FaunusVertex getCurrentValue()

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,FaunusVertex>

getProgress

public float getProgress()
                  throws IOException

Specified by:

getProgress in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,FaunusVertex>

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,FaunusVertex>

Throws:

IOException