Package org.apache.hadoop.fs.store

Class ByteBufferInputStream

java.lang.Object

java.io.InputStream

org.apache.hadoop.fs.store.ByteBufferInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public final class ByteBufferInputStream
extends java.io.InputStream

Provide an input stream from a byte buffer; supporting mark(int).

Constructor Summary

Constructors

Constructor	Description
ByteBufferInputStream(int size, java.nio.ByteBuffer byteBuffer)

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()	After the stream is closed, set the local reference to the byte buffer to null; this guarantees that future attempts to use stream methods will fail.
boolean	hasRemaining()	Check if there is data left.
boolean	isOpen()	Is the stream open?
void	mark(int readlimit)
boolean	markSupported()
int	position()	Get the current buffer position.
int	read()
int	read(byte[] b, int offset, int length)	Read in data.
void	reset()
long	skip(long offset)
java.lang.String	toString()

Methods inherited from class java.io.InputStream

nullInputStream, read, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteBufferInputStream

public ByteBufferInputStream(int size,
                             java.nio.ByteBuffer byteBuffer)

Method Detail

close

public void close()

After the stream is closed, set the local reference to the byte buffer to null; this guarantees that future attempts to use stream methods will fail.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.InputStream

isOpen

public boolean isOpen()

Is the stream open?

Returns:

true if the stream has not been closed.

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

skip

public long skip(long offset)
          throws java.io.IOException

Overrides:

skip in class java.io.InputStream

Throws:

java.io.IOException

available

public int available()

Overrides:

available in class java.io.InputStream

position

public int position()

Get the current buffer position.

Returns:

the buffer position

hasRemaining

public boolean hasRemaining()

Check if there is data left.

Returns:

true if there is data remaining in the buffer.

mark

public void mark(int readlimit)

Overrides:

mark in class java.io.InputStream

reset

public void reset()
           throws java.io.IOException

Overrides:

reset in class java.io.InputStream

Throws:

java.io.IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class java.io.InputStream

read

public int read(byte[] b,
                int offset,
                int length)
         throws java.io.IOException

Read in data.

Overrides:

read in class java.io.InputStream

Parameters:

b - destination buffer.

offset - offset within the buffer.

length - length of bytes to read.

Throws:

java.io.EOFException - if the position is negative

java.lang.IndexOutOfBoundsException - if there isn't space for the amount of data requested.

java.lang.IllegalArgumentException - other arguments are invalid.

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object