org.kitesdk.data.spi

Class AbstractKeyRecordReaderWrapper<E,K,V>

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<E,Void>

org.kitesdk.data.spi.AbstractKeyRecordReaderWrapper<E,K,V>

Type Parameters:

E - The Dataset entity type.

K - The type of the key to convert.

V - The type of the value to convert.

All Implemented Interfaces:

Closeable, AutoCloseable

public abstract class AbstractKeyRecordReaderWrapper<E,K,V>
extends RecordReader<E,Void>

A wrapper class for converting a RecordReader<K, V> to a RecordReader<E, Void>.

Since:

0.12.0

Field Summary

Fields

Modifier and Type	Field and Description
protected RecordReader<K,V>	delegate

Constructor Summary

Constructors

Constructor and Description
AbstractKeyRecordReaderWrapper(InputFormat<K,V> inputFormat)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
Void	getCurrentValue()
float	getProgress()
void	initialize(InputSplit inputSplit, TaskAttemptContext taskAttemptContext)
boolean	nextKeyValue()

Methods inherited from class org.apache.hadoop.mapreduce.RecordReader

getCurrentKey

Methods inherited from class java.lang.Object

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

Field Detail

delegate

protected RecordReader<K,V> delegate

Constructor Detail

AbstractKeyRecordReaderWrapper

public AbstractKeyRecordReaderWrapper(InputFormat<K,V> inputFormat)

Method Detail

initialize

public void initialize(InputSplit inputSplit,
              TaskAttemptContext taskAttemptContext)
                throws IOException,
                       InterruptedException

Specified by:

initialize in class RecordReader<E,Void>

Throws:

IOException

InterruptedException

nextKeyValue

public boolean nextKeyValue()
                     throws IOException,
                            InterruptedException

Specified by:

nextKeyValue in class RecordReader<E,Void>

Throws:

IOException

InterruptedException

getCurrentValue

public Void getCurrentValue()
                     throws IOException,
                            InterruptedException

Specified by:

getCurrentValue in class RecordReader<E,Void>

Throws:

IOException

InterruptedException

getProgress

public float getProgress()
                  throws IOException,
                         InterruptedException

Specified by:

getProgress in class RecordReader<E,Void>

Throws:

IOException

InterruptedException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class RecordReader<E,Void>

Throws:

IOException