com.db4o.io

Class FileStorage.FileBin

java.lang.Object

com.db4o.io.FileStorage.FileBin

All Implemented Interfaces:

Bin

Enclosing class:

FileStorage

public static class FileStorage.FileBin
extends java.lang.Object
implements Bin

Constructor Summary

Constructors

Constructor and Description
FileStorage.FileBin(BinConfiguration config)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() closes the Bin.
long	length() returns the length of the Bin (on disc, in memory).
int	read(long pos, byte[] bytes, int length) reads a given number of bytes into an array of bytes at an offset position.
void	sync() flushes the buffer content to the physical storage media.
void	sync(java.lang.Runnable runnable) runs the Runnable between two calls to sync();
int	syncRead(long position, byte[] bytes, int bytesToRead) reads a given number of bytes into an array of bytes at an offset position.
void	write(long pos, byte[] buffer, int length) writes a given number of bytes from an array of bytes at an offset position

Methods inherited from class java.lang.Object

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

Constructor Detail

FileStorage.FileBin

public FileStorage.FileBin(BinConfiguration config)
                    throws Db4oIOException

Throws:

Db4oIOException

Method Detail

close

public void close()
           throws Db4oIOException

Description copied from interface: Bin

closes the Bin.

Specified by:

close in interface Bin

Throws:

Db4oIOException

length

public long length()
            throws Db4oIOException

Description copied from interface: Bin

returns the length of the Bin (on disc, in memory).

Specified by:

length in interface Bin

Throws:

Db4oIOException

read

public int read(long pos,
       byte[] bytes,
       int length)
         throws Db4oIOException

Description copied from interface: Bin

reads a given number of bytes into an array of bytes at an offset position.

Specified by:

read in interface Bin

Parameters:

pos - the offset position to read at

bytes - the byte array to read bytes into

length - the number of bytes to be read

Returns:

Throws:

Db4oIOException

sync

public void sync()
          throws Db4oIOException

Description copied from interface: Bin

flushes the buffer content to the physical storage media.

Specified by:

sync in interface Bin

Throws:

Db4oIOException

syncRead

public int syncRead(long position,
           byte[] bytes,
           int bytesToRead)

Description copied from interface: Bin

reads a given number of bytes into an array of bytes at an offset position. In contrast to the normal Bin.read(long, byte[], int) method, the Bin should ensure direct access to the raw storage medium. No caching should take place.

Specified by:

syncRead in interface Bin

Parameters:

position - the offset position to read at

bytes - the byte array to read bytes into

bytesToRead - the number of bytes to be read

Returns:

write

public void write(long pos,
         byte[] buffer,
         int length)
           throws Db4oIOException

Description copied from interface: Bin

writes a given number of bytes from an array of bytes at an offset position

Specified by:

write in interface Bin

Parameters:

pos - the offset position to write at

buffer - the array of bytes to write

length - the number of bytes to write

Throws:

Db4oIOException

sync

public void sync(java.lang.Runnable runnable)

Description copied from interface: Bin

runs the Runnable between two calls to sync();

Specified by:

sync in interface Bin