Class FileAsync

java.lang.Object

java.nio.channels.spi.AbstractInterruptibleChannel

java.nio.channels.FileChannel

org.h2.store.fs.FileBase

org.h2.store.fs.FileBaseDefault

org.h2.store.fs.async.FileAsync

All Implemented Interfaces:

Closeable, AutoCloseable, ByteChannel, Channel, GatheringByteChannel, InterruptibleChannel, ReadableByteChannel, ScatteringByteChannel, SeekableByteChannel, WritableByteChannel

class FileAsync
extends FileBaseDefault

File which uses NIO2 AsynchronousFileChannel.

Nested Class Summary

Nested classes/interfaces inherited from class FileChannel

FileChannel.MapMode

Field Summary

Fields

Modifier and Type	Field	Description
private final AsynchronousFileChannel	channel
private final String	name

Constructor Summary

Constructors

Constructor	Description
FileAsync(String fileName, String mode)

Method Summary

Modifier and Type	Method	Description
private static <T> T	complete(Future<T> future)
void	force(boolean metaData)
void	implCloseChannel()
protected void	implTruncate(long newLength)	The truncate implementation.
int	read(ByteBuffer dst, long position)
long	size()
String	toString()
FileLock	tryLock(long position, long size, boolean shared)
int	write(ByteBuffer src, long position)

Methods inherited from class FileBaseDefault

position, position, read, truncate, write

Methods inherited from class FileBase

lock, map, read, transferFrom, transferTo, write

Methods inherited from class FileChannel

lock, map, open, open, read, tryLock, write

Methods inherited from class AbstractInterruptibleChannel

begin, close, end, isOpen

Methods inherited from class Object

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

Methods inherited from interface Channel

isOpen

Field Details

name

private final String name

channel

private final AsynchronousFileChannel channel

Constructor Details

FileAsync

FileAsync(String fileName,
 String mode)
   throws IOException

Throws:

IOException

Method Details

complete

private static <T> T complete(Future<T> future)
                       throws IOException

Throws:

IOException

implCloseChannel

public void implCloseChannel()
                      throws IOException

Overrides:

implCloseChannel in class FileBase

Throws:

IOException

size

public long size()
          throws IOException

Specified by:

size in interface SeekableByteChannel

Specified by:

size in class FileChannel

Throws:

IOException

read

public int read(ByteBuffer dst,
 long position)
         throws IOException

Overrides:

read in class FileBase

Throws:

IOException

write

public int write(ByteBuffer src,
 long position)
          throws IOException

Overrides:

write in class FileBase

Throws:

IOException

implTruncate

protected void implTruncate(long newLength)
                     throws IOException

Description copied from class: FileBaseDefault

The truncate implementation.

Specified by:

implTruncate in class FileBaseDefault

Parameters:

newLength - the new size

Throws:

IOException - on failure

force

public void force(boolean metaData)
           throws IOException

Overrides:

force in class FileBase

Throws:

IOException

tryLock

public FileLock tryLock(long position,
 long size,
 boolean shared)
                 throws IOException

Overrides:

tryLock in class FileBase

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object