Package com.db4o.io

Class BlockAwareBin

java.lang.Object

com.db4o.io.BinDecorator

com.db4o.io.BlockAwareBin

All Implemented Interfaces:

Bin

public class BlockAwareBin
extends BinDecorator

Field Summary

Fields inherited from class com.db4o.io.BinDecorator

_bin

Constructor Summary

Constructors

Constructor	Description
BlockAwareBin(Bin bin)

Method Summary

Modifier and Type	Method	Description
void	blockCopy(int oldAddress, int oldAddressOffset, int newAddress, int newAddressOffset, int length)	copies a block within a file in block mode
int	blockRead(int address, byte[] buffer)	reads a buffer at the seeked address
int	blockRead(int address, byte[] bytes, int length)	implement to read a buffer at the seeked address
int	blockRead(int address, int offset, byte[] buffer)	reads a buffer at the seeked address
int	blockRead(int address, int offset, byte[] bytes, int length)	implement to read a buffer at the seeked address
int	blockSize()	returns the block size currently used
void	blockSize(int blockSize)	outside call to set the block size of this adapter
void	blockWrite(int address, byte[] buffer)	reads a buffer at the seeked address
void	blockWrite(int address, byte[] bytes, int length)	implement to read a buffer at the seeked address
void	blockWrite(int address, int offset, byte[] buffer)	reads a buffer at the seeked address
void	blockWrite(int address, int offset, byte[] bytes, int length)	implement to read a buffer at the seeked address
void	copy(long oldAddress, long newAddress, int length)	copies a block within a file in absolute mode
int	read(long pos, byte[] buffer)	reads a buffer at the seeked address
protected long	regularAddress(int blockAddress, int blockAddressOffset)	converts address and address offset to an absolute address
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();
void	write(long pos, byte[] bytes)	writes a buffer to the seeked address

Methods inherited from class com.db4o.io.BinDecorator

close, length, read, syncRead, write

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockAwareBin

public BlockAwareBin(Bin bin)

Method Detail

regularAddress

protected final long regularAddress(int blockAddress,
                                    int blockAddressOffset)

converts address and address offset to an absolute address

blockCopy

public void blockCopy(int oldAddress,
                      int oldAddressOffset,
                      int newAddress,
                      int newAddressOffset,
                      int length)
               throws Db4oIOException

copies a block within a file in block mode

Throws:

Db4oIOException

copy

public void copy(long oldAddress,
                 long newAddress,
                 int length)
          throws Db4oIOException

copies a block within a file in absolute mode

Throws:

Db4oIOException

blockRead

public int blockRead(int address,
                     int offset,
                     byte[] buffer)
              throws Db4oIOException

reads a buffer at the seeked address

Returns:

the number of bytes read and returned

Throws:

Db4oIOException

blockRead

public int blockRead(int address,
                     int offset,
                     byte[] bytes,
                     int length)
              throws Db4oIOException

implement to read a buffer at the seeked address

Throws:

Db4oIOException

blockRead

public int blockRead(int address,
                     byte[] buffer)
              throws Db4oIOException

reads a buffer at the seeked address

Returns:

the number of bytes read and returned

Throws:

Db4oIOException

blockRead

public int blockRead(int address,
                     byte[] bytes,
                     int length)
              throws Db4oIOException

implement to read a buffer at the seeked address

Throws:

Db4oIOException

read

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

reads a buffer at the seeked address

Returns:

the number of bytes read and returned

Throws:

Db4oIOException

blockWrite

public void blockWrite(int address,
                       int offset,
                       byte[] buffer)
                throws Db4oIOException

reads a buffer at the seeked address

Throws:

Db4oIOException

blockWrite

public void blockWrite(int address,
                       int offset,
                       byte[] bytes,
                       int length)
                throws Db4oIOException

implement to read a buffer at the seeked address

Throws:

Db4oIOException

blockWrite

public void blockWrite(int address,
                       byte[] buffer)
                throws Db4oIOException

reads a buffer at the seeked address

Throws:

Db4oIOException

blockWrite

public void blockWrite(int address,
                       byte[] bytes,
                       int length)
                throws Db4oIOException

implement to read a buffer at the seeked address

Throws:

Db4oIOException

sync

public void sync()

Description copied from interface: Bin

flushes the buffer content to the physical storage media.

Specified by:

sync in interface Bin

Overrides:

sync in class BinDecorator

See Also:

Bin.sync()

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

Overrides:

sync in class BinDecorator

write

public void write(long pos,
                  byte[] bytes)
           throws Db4oIOException

writes a buffer to the seeked address

Throws:

Db4oIOException

blockSize

public int blockSize()

returns the block size currently used

blockSize

public void blockSize(int blockSize)

outside call to set the block size of this adapter