org.wandora.utils.fileserver

Interface VirtualFileSystem

All Known Implementing Classes:

SimpleVirtualFileSystem

public interface VirtualFileSystem

A virtual file system is like a file system with directories which contain other directories and files. Usually it is somehow mapped to a real file system but with restrictions so that only certain files can be accessed through it for security reasons. A simple way to do this is to mount one directory as the root directory and then using everything inside that as the file system.

Author:

olli

Method Summary

Modifier and Type	Method and Description
java.io.File	getRealFileFor(java.lang.String file) Gets the real File for a virtual file name.
java.lang.String	getURLFor(java.lang.String file) Returns an URL that can be used to access the given virtual file.
java.lang.String[]	listDirectories(java.lang.String dir) Lists all virtual directories inside the given virtual directory.
java.lang.String[]	listFiles(java.lang.String dir) Lists all virtual files in the given virual directory.

Method Detail

getURLFor

java.lang.String getURLFor(java.lang.String file)

Returns an URL that can be used to access the given virtual file. If the file system does not support this kind of operation, returns null.

getRealFileFor

java.io.File getRealFileFor(java.lang.String file)

Gets the real File for a virtual file name.

listDirectories

java.lang.String[] listDirectories(java.lang.String dir)

Lists all virtual directories inside the given virtual directory.

listFiles

java.lang.String[] listFiles(java.lang.String dir)

Lists all virtual files in the given virual directory.