org.apache.avro.mapred

Class SequenceFileReader<K,V>

java.lang.Object

org.apache.avro.mapred.SequenceFileReader<K,V>

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<Pair<K,V>>, Iterator<Pair<K,V>>, org.apache.avro.file.FileReader<Pair<K,V>>

public class SequenceFileReader<K,V>
extends Object
implements org.apache.avro.file.FileReader<Pair<K,V>>

A FileReader for sequence files.

Constructor Summary

Constructors

Constructor and Description
SequenceFileReader(File file)
SequenceFileReader(SequenceFile.Reader reader, Configuration conf)
SequenceFileReader(URI uri, Configuration c)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
org.apache.avro.Schema	getSchema()
boolean	hasNext()
Iterator<Pair<K,V>>	iterator()
Pair<K,V>	next()
Pair<K,V>	next(Pair<K,V> reuse)
boolean	pastSync(long position)
void	remove()
void	sync(long position)
long	tell()

Methods inherited from class java.lang.Object

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

Constructor Detail

SequenceFileReader

public SequenceFileReader(File file)
                   throws IOException

Throws:

IOException

SequenceFileReader

public SequenceFileReader(URI uri,
                  Configuration c)
                   throws IOException

Throws:

IOException

SequenceFileReader

public SequenceFileReader(SequenceFile.Reader reader,
                  Configuration conf)

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

remove

public void remove()

Specified by:

remove in interface Iterator<Pair<K,V>>

iterator

public Iterator<Pair<K,V>> iterator()

Specified by:

iterator in interface Iterable<Pair<K,V>>

getSchema

public org.apache.avro.Schema getSchema()

Specified by:

getSchema in interface org.apache.avro.file.FileReader<Pair<K,V>>

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Pair<K,V>>

next

public Pair<K,V> next()

Specified by:

next in interface Iterator<Pair<K,V>>

next

public Pair<K,V> next(Pair<K,V> reuse)
               throws IOException

Specified by:

next in interface org.apache.avro.file.FileReader<Pair<K,V>>

Throws:

IOException

sync

public void sync(long position)
          throws IOException

Specified by:

sync in interface org.apache.avro.file.FileReader<Pair<K,V>>

Throws:

IOException

pastSync

public boolean pastSync(long position)
                 throws IOException

Specified by:

pastSync in interface org.apache.avro.file.FileReader<Pair<K,V>>

Throws:

IOException

tell

public long tell()
          throws IOException

Specified by:

tell in interface org.apache.avro.file.FileReader<Pair<K,V>>

Throws:

IOException