com.db4o.util.io.win32

Class Win32IoAdapter

java.lang.Object

com.db4o.io.IoAdapter

com.db4o.util.io.win32.Win32IoAdapter

public class Win32IoAdapter
extends IoAdapter

An IoAdapter implementation that uses JNI to talk directly with the WIN32 API.

Constructor Summary

Constructors

Constructor and Description
Win32IoAdapter()
Win32IoAdapter(java.lang.String path, boolean lockFile, long initialLength, boolean readOnly)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() implement to close the adapter
void	copy(long oldAddress, long newAddress, int length) copies a block within a file in absolute mode
void	delete(java.lang.String path) deletes the given path from whatever 'file system' is addressed
boolean	exists(java.lang.String path) checks whether a file exists
long	getLength() implement to return the absolute length of the file
IoAdapter	open(java.lang.String path, boolean lockFile, long initialLength, boolean readOnly) implement to open the file
int	read(byte[] bytes, int length) implement to read a buffer at the seeked address
void	seek(long pos) implement to set the read/write pointer in the file, absolute mode
void	sync() implement to flush the file contents to storage
void	write(byte[] bytes, int length) implement to write a buffer at the seeked address

Methods inherited from class com.db4o.io.IoAdapter

blockCopy, blockSeek, blockSeek, blockSize, blockSize, delegatedIoAdapter, read, regularAddress, write

Methods inherited from class java.lang.Object

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

Constructor Detail

Win32IoAdapter

public Win32IoAdapter(java.lang.String path,
              boolean lockFile,
              long initialLength,
              boolean readOnly)

Win32IoAdapter

public Win32IoAdapter()

Method Detail

close

public void close()
           throws Db4oIOException

Description copied from class: IoAdapter

implement to close the adapter

Specified by:

close in class IoAdapter

Throws:

Db4oIOException

delete

public void delete(java.lang.String path)

Description copied from class: IoAdapter

deletes the given path from whatever 'file system' is addressed

Specified by:

delete in class IoAdapter

exists

public boolean exists(java.lang.String path)

Description copied from class: IoAdapter

checks whether a file exists

Specified by:

exists in class IoAdapter

getLength

public long getLength()
               throws Db4oIOException

Description copied from class: IoAdapter

implement to return the absolute length of the file

Specified by:

getLength in class IoAdapter

Throws:

Db4oIOException

open

public IoAdapter open(java.lang.String path,
             boolean lockFile,
             long initialLength,
             boolean readOnly)
               throws Db4oIOException

Description copied from class: IoAdapter

implement to open the file

Specified by:

open in class IoAdapter

Throws:

Db4oIOException

read

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

Description copied from class: IoAdapter

implement to read a buffer at the seeked address

Specified by:

read in class IoAdapter

Throws:

Db4oIOException

seek

public void seek(long pos)
          throws Db4oIOException

Description copied from class: IoAdapter

implement to set the read/write pointer in the file, absolute mode

Specified by:

seek in class IoAdapter

Throws:

Db4oIOException

sync

public void sync()
          throws Db4oIOException

Description copied from class: IoAdapter

implement to flush the file contents to storage

Specified by:

sync in class IoAdapter

Throws:

Db4oIOException

write

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

Description copied from class: IoAdapter

implement to write a buffer at the seeked address

Specified by:

write in class IoAdapter

Throws:

Db4oIOException

copy

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

Description copied from class: IoAdapter

copies a block within a file in absolute mode

Overrides:

copy in class IoAdapter

Throws:

Db4oIOException