net.metanotion.io
Class ChRootFileSystem

java.lang.Object
  net.metanotion.io.ChRootFileSystem

All Implemented Interfaces:

FileSystem, JFileSystem

public final class ChRootFileSystem
extends Object
implements JFileSystem

FileSystem to change the root of another file system.

Constructor Summary

ChRootFileSystem(JFileSystem fs, String root)
Create a changed root file system.

Method Summary

void	addListener(FileSystemListener fsl) Add a listener to this file system.
void	addListener(FileSystemListener fsl, File root) Add a listener to this file system.
void	addListener(FileSystemListener fsl, File root, boolean recursive) Add a listener to this file system.
File	getFile(String url) Get the file corresponding to a url.
File	getRoot() Get the root File object of this file system.
InputStream	openInput(File f) Get an input stream to read a file.
InputStream	openJInput(File f) Get a Java intput stream to write a file.
OutputStream	openJOutput(File f) Get a Java output stream to write a file.
RandomAccessFile	openJRandomAccess(File f) Get a random access to read and write a file.
OutputStream	openOutput(File f) Get an output stream to write a file.
RandomAccess	openRandomAccess(File f) Open a file for reading and writing.
void	removeListener(FileSystemListener fsl) Remove a listener to this file system.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChRootFileSystem

public ChRootFileSystem(JFileSystem fs,
                        String root)

Create a changed root file system.

Parameters:

fs - FileSystem to change the root of.

root - New root file filename.

Method Detail

getRoot

public File getRoot()

Description copied from interface: FileSystem

Get the root File object of this file system.

Specified by:

getRoot in interface FileSystem

Returns:

Root file.

getFile

public File getFile(String url)

Description copied from interface: FileSystem

Get the file corresponding to a url.

Specified by:

getFile in interface FileSystem

Parameters:

url - filename of the file or directory.

Returns:

File object corresponding to a url.

openInput

public InputStream openInput(File f)

Description copied from interface: FileSystem

Get an input stream to read a file.

Specified by:

openInput in interface FileSystem

Parameters:

f - File to open for reading.

Returns:

InputStream to read the file.

openOutput

public OutputStream openOutput(File f)

Description copied from interface: FileSystem

Get an output stream to write a file.

Specified by:

openOutput in interface FileSystem

Parameters:

f - File to open for writing.

Returns:

OutputStream to write the file.

openRandomAccess

public RandomAccess openRandomAccess(File f)

Description copied from interface: FileSystem

Open a file for reading and writing.

Specified by:

openRandomAccess in interface FileSystem

Parameters:

f - File to open.

Returns:

RandomAccess object to read and write the file.

addListener

public void addListener(FileSystemListener fsl)

Description copied from interface: FileSystem

Add a listener to this file system.

Specified by:

addListener in interface FileSystem

Parameters:

fsl - FileSystemListner to call back.

addListener

public void addListener(FileSystemListener fsl,
                        File root)

Description copied from interface: FileSystem

Add a listener to this file system.

Specified by:

addListener in interface FileSystem

Parameters:

fsl - FileSystemListner to call back

root - File or directory to specifically watch.

addListener

public void addListener(FileSystemListener fsl,
                        File root,
                        boolean recursive)

Description copied from interface: FileSystem

Add a listener to this file system.

Specified by:

addListener in interface FileSystem

Parameters:

fsl - FileSystemListner to call back

root - File or directory to specifically watch.

recursive - If true, send events for all children of this file, if false, only events on this file.

removeListener

public void removeListener(FileSystemListener fsl)

Description copied from interface: FileSystem

Remove a listener to this file system.

Specified by:

removeListener in interface FileSystem

Parameters:

fsl - FileSystemListner to remove.

openJInput

public InputStream openJInput(File f)

Description copied from interface: JFileSystem

Get a Java intput stream to write a file.

Specified by:

openJInput in interface JFileSystem

Parameters:

f - File to open for reading.

Returns:

InputStream to read the file.

openJOutput

public OutputStream openJOutput(File f)

Description copied from interface: JFileSystem

Get a Java output stream to write a file.

Specified by:

openJOutput in interface JFileSystem

Parameters:

f - File to open for writing.

Returns:

OutputStream to write the file.

openJRandomAccess

public RandomAccessFile openJRandomAccess(File f)

Description copied from interface: JFileSystem

Get a random access to read and write a file.

Specified by:

openJRandomAccess in interface JFileSystem

Parameters:

f - File to open.

Returns:

RandomAccessFile to read and write the file.