org.apache.commons.vfs2.impl
Class VirtualFileSystem

java.lang.Object
  org.apache.commons.vfs2.provider.AbstractVfsComponent
      org.apache.commons.vfs2.provider.AbstractFileSystem
          org.apache.commons.vfs2.impl.VirtualFileSystem

All Implemented Interfaces:

FileSystem, VfsComponent

public class VirtualFileSystem
extends AbstractFileSystem

A logical file system, made up of set of junctions, or links, to files from other file systems.

Version:

$Revision: 1040766 $ $Date: 2010-12-01 02:06:53 +0530 (Wed, 01 Dec 2010) $

Author:

Commons VFS team

Constructor Summary

VirtualFileSystem(AbstractFileName rootName, FileSystemOptions fileSystemOptions)

Method Summary

protected void	addCapabilities(Collection<Capability> caps) Adds the capabilities of this file system.
void	addJunction(String junctionPoint, FileObject targetFile) Adds a junction to this file system.
protected FileObject	createFile(AbstractFileName name) Creates a file object.
void	removeJunction(String junctionPoint) Removes a junction from this file system.

Methods inherited from class org.apache.commons.vfs2.provider.AbstractFileSystem

addListener, close, closeCommunicationLink, decorateFileObject, doCloseCommunicationLink, doReplicateFile, fireFileChanged, fireFileCreated, fireFileDeleted, getAttribute, getFileFromCache, getFileSystemManager, getFileSystemOptions, getLastModTimeAccuracy, getParentLayer, getRoot, getRootName, getRootURI, hasCapability, init, isOpen, isReleaseable, notifyAllStreamsClosed, putFileToCache, removeFileFromCache, removeListener, replicateFile, resolveFile, resolveFile, setAttribute

Methods inherited from class org.apache.commons.vfs2.provider.AbstractVfsComponent

getContext, getLogger, setContext, setLogger

Methods inherited from class java.lang.Object

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

Constructor Detail

VirtualFileSystem

public VirtualFileSystem(AbstractFileName rootName,
                         FileSystemOptions fileSystemOptions)

Method Detail

addCapabilities

protected void addCapabilities(Collection<Capability> caps)

Adds the capabilities of this file system.

Specified by:

addCapabilities in class AbstractFileSystem

createFile

protected FileObject createFile(AbstractFileName name)
                         throws Exception

Creates a file object. This method is called only if the requested file is not cached.

Specified by:

createFile in class AbstractFileSystem

Throws:

Exception

addJunction

public void addJunction(String junctionPoint,
                        FileObject targetFile)
                 throws FileSystemException

Adds a junction to this file system.

Specified by:

addJunction in interface FileSystem

Overrides:

addJunction in class AbstractFileSystem

Parameters:

junctionPoint - The location of the junction.

targetFile - The target file to base the junction on.

Throws:

FileSystemException - if an error occurs.

removeJunction

public void removeJunction(String junctionPoint)
                    throws FileSystemException

Removes a junction from this file system.

Specified by:

removeJunction in interface FileSystem

Overrides:

removeJunction in class AbstractFileSystem

Parameters:

junctionPoint - The junction to remove.

Throws:

FileSystemException - if an error occurs.