Package com.pnfsoftware.jeb.util.io

Class ArraySeekableByteChannel

java.lang.Object

com.pnfsoftware.jeb.util.io.ArraySeekableByteChannel

All Implemented Interfaces:

Closeable, AutoCloseable, ByteChannel, Channel, ReadableByteChannel, SeekableByteChannel, WritableByteChannel

public class ArraySeekableByteChannel
extends Object
implements SeekableByteChannel

Read-only, seekable, byte-array backed channel.

Constructor Summary

Constructors

Constructor	Description
ArraySeekableByteChannel(byte[] data)	Create a read-only, seekable byte channel backed by a byte array.
ArraySeekableByteChannel(byte[] data, int arrayBaseOffset, int size)	Create a read-only, seekable byte channel backed by a byte array.

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	isOpen()
long	position()
SeekableByteChannel	position(long newPosition)
int	read(ByteBuffer dst)	Note that this implementation reads all the bytes it can read, up to the requested amount, which means there is no need for a read() loop.
long	size()
SeekableByteChannel	truncate(long size)
int	write(ByteBuffer src)

Methods inherited from class java.lang.Object

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

Constructor Details

ArraySeekableByteChannel

public ArraySeekableByteChannel(byte[] data)

Create a read-only, seekable byte channel backed by a byte array.

Parameters:

data - input data to be wrapped

ArraySeekableByteChannel

public ArraySeekableByteChannel(byte[] data,
 int arrayBaseOffset,
 int size)

Create a read-only, seekable byte channel backed by a byte array.

Parameters:

data - input data to be wrapped

arrayBaseOffset - base offset which will be associated to position 0 in the channel

size - available size from the base offset

Method Details

isOpen

public boolean isOpen()

Specified by:

isOpen in interface Channel

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Channel

Specified by:

close in interface Closeable

Throws:

IOException

read

public int read(ByteBuffer dst)
         throws IOException

Note that this implementation reads all the bytes it can read, up to the requested amount, which means there is no need for a read() loop.

Specified by:

read in interface ReadableByteChannel

Specified by:

read in interface SeekableByteChannel

Throws:

IOException

write

public int write(ByteBuffer src)
          throws IOException

Specified by:

write in interface SeekableByteChannel

Specified by:

write in interface WritableByteChannel

Throws:

IOException

position

public long position()
              throws IOException

Specified by:

position in interface SeekableByteChannel

Throws:

IOException

position

public SeekableByteChannel position(long newPosition)
                             throws IOException

Specified by:

position in interface SeekableByteChannel

Throws:

IOException

size

public long size()
          throws IOException

Specified by:

size in interface SeekableByteChannel

Throws:

IOException

truncate

public SeekableByteChannel truncate(long size)
                             throws IOException

Specified by:

truncate in interface SeekableByteChannel

Throws:

IOException