alluxio.file

Class SeekableBufferedInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

java.io.BufferedInputStream

alluxio.file.SeekableBufferedInputStream

All Implemented Interfaces:

Positioned, Seekable, Closeable, AutoCloseable

public class SeekableBufferedInputStream
extends BufferedInputStream
implements Seekable

A class optimizes seekable input streams by providing buffering.

Field Summary

Fields inherited from class java.io.BufferedInputStream

buf, count, marklimit, markpos, pos

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor and Description
SeekableBufferedInputStream(InputStream in, int size) Constructor.

Method Summary

Modifier and Type	Method and Description
long	getPos()
void	seek(long newPosition) Moves the starting read position of the stream to the specified position which is relative to the start of the stream.
long	skip(long n)

Methods inherited from class java.io.BufferedInputStream

available, close, mark, markSupported, read, read, reset

Methods inherited from class java.io.FilterInputStream

read

Methods inherited from class java.lang.Object

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

Constructor Detail

SeekableBufferedInputStream

public SeekableBufferedInputStream(InputStream in,
                                   int size)

Constructor.

Parameters:

in - input stream implements seekable

size - the buffer size

Method Detail

getPos

public long getPos()
            throws IOException

Specified by:

getPos in interface Positioned

Returns:

the current position

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class BufferedInputStream

Throws:

IOException

seek

public void seek(long newPosition)
          throws IOException

Description copied from interface: Seekable

Moves the starting read position of the stream to the specified position which is relative to the start of the stream. Seeking to a position before the current read position is supported.

Specified by:

seek in interface Seekable

Parameters:

newPosition - the position to seek to, it must be between 0 and the end of the stream - 1

Throws:

IOException