Package org.h2.store.fs.zip

Class FileZip

java.lang.Object

java.nio.channels.spi.AbstractInterruptibleChannel

java.nio.channels.FileChannel

org.h2.store.fs.FileBase

org.h2.store.fs.zip.FileZip

All Implemented Interfaces:

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

class FileZip
extends FileBase

The file is read from a stream. When reading from start to end, the same input stream is re-used, however when reading from end to start, a new input stream is opened for each request.

Nested Class Summary

Nested classes/interfaces inherited from class java.nio.channels.FileChannel

FileChannel.MapMode

Field Summary

Fields

Modifier and Type	Field	Description
private final ZipEntry	entry
private final ZipFile	file
private InputStream	in
private long	inPos
private final long	length
private long	pos
private static final byte[]	SKIP_BUFFER
private boolean	skipUsingRead

Constructor Summary

Constructors

Constructor	Description
FileZip(ZipFile file, ZipEntry entry)

Method Summary

Modifier and Type	Method	Description
void	force(boolean metaData)
protected void	implCloseChannel()
long	position()
FileChannel	position(long newPos)
int	read(ByteBuffer dst)
private void	seek()
long	size()
FileChannel	truncate(long newLength)
FileLock	tryLock(long position, long size, boolean shared)
int	write(ByteBuffer src)

Methods inherited from class org.h2.store.fs.FileBase

lock, map, read, read, transferFrom, transferTo, write, write

Methods inherited from class java.nio.channels.FileChannel

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

Methods inherited from class java.nio.channels.spi.AbstractInterruptibleChannel

begin, close, end, isOpen

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.nio.channels.Channel

isOpen

Field Details

SKIP_BUFFER

private static final byte[] SKIP_BUFFER

file

private final ZipFile file

entry

private final ZipEntry entry

pos

private long pos

in

private InputStream in

inPos

private long inPos

length

private final long length

skipUsingRead

private boolean skipUsingRead

Constructor Details

FileZip

FileZip(ZipFile file,
 ZipEntry entry)

Method Details

position

public long position()

Specified by:

position in interface SeekableByteChannel

Specified by:

position in class FileChannel

size

public long size()

Specified by:

size in interface SeekableByteChannel

Specified by:

size in class FileChannel

read

public int read(ByteBuffer dst)
         throws IOException

Specified by:

read in interface ReadableByteChannel

Specified by:

read in interface SeekableByteChannel

Specified by:

read in class FileChannel

Throws:

IOException

seek

private void seek()
           throws IOException

Throws:

IOException

position

public FileChannel position(long newPos)

Specified by:

position in interface SeekableByteChannel

Specified by:

position in class FileChannel

truncate

public FileChannel truncate(long newLength)
                     throws IOException

Specified by:

truncate in interface SeekableByteChannel

Specified by:

truncate in class FileChannel

Throws:

IOException

force

public void force(boolean metaData)
           throws IOException

Overrides:

force in class FileBase

Throws:

IOException

write

public int write(ByteBuffer src)
          throws IOException

Specified by:

write in interface SeekableByteChannel

Specified by:

write in interface WritableByteChannel

Specified by:

write in class FileChannel

Throws:

IOException

tryLock

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

Overrides:

tryLock in class FileBase

Throws:

IOException

implCloseChannel

protected void implCloseChannel()
                         throws IOException

Overrides:

implCloseChannel in class FileBase

Throws:

IOException