Package org.apache.commons.vfs.provider.jar

Class JarFileSystem

java.lang.Object

org.apache.commons.vfs.provider.AbstractVfsComponent

org.apache.commons.vfs.provider.AbstractFileSystem

org.apache.commons.vfs.provider.zip.ZipFileSystem

org.apache.commons.vfs.provider.jar.JarFileSystem

All Implemented Interfaces:

FileSystem, VfsComponent

public class JarFileSystem
extends ZipFileSystem

A read-only file system for Jar files.

Version:

$Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Wed, 29 Nov 2006) $

Author:

Brian Olsen

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JarFileSystem(FileName rootName, FileObject file, FileSystemOptions fileSystemOptions)

Method Summary

Modifier and Type	Method	Description
protected void	addCapabilities(Collection caps)	Returns the capabilities of this file system.
protected ZipFile	createZipFile(File file)
protected ZipFileObject	createZipFileObject(FileName name, ZipEntry entry)
Object	getAttribute(String attrName)	Retrives the attribute with the specified name.
protected ZipFile	getZipFile()

Methods inherited from class org.apache.commons.vfs.provider.zip.ZipFileSystem

createFile, doCloseCommunicationLink, init

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

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

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

getContext, getLogger, setContext, setLogger

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.vfs.FileSystem

addJunction, addListener, getFileSystemManager, getFileSystemOptions, getLastModTimeAccuracy, getParentLayer, getRoot, getRootName, hasCapability, removeJunction, removeListener, replicateFile, resolveFile, resolveFile, setAttribute

Constructor Details

JarFileSystem

protected JarFileSystem(FileName rootName,
 FileObject file,
 FileSystemOptions fileSystemOptions)
                 throws FileSystemException

Throws:

FileSystemException

Method Details

createZipFile

protected ZipFile createZipFile(File file)
                         throws FileSystemException

Overrides:

createZipFile in class ZipFileSystem

Throws:

FileSystemException

createZipFileObject

protected ZipFileObject createZipFileObject(FileName name,
 ZipEntry entry)
                                     throws FileSystemException

Overrides:

createZipFileObject in class ZipFileSystem

Throws:

FileSystemException

addCapabilities

protected void addCapabilities(Collection caps)

Returns the capabilities of this file system.

Overrides:

addCapabilities in class ZipFileSystem

getAttribute

public Object getAttribute(String attrName)
                    throws FileSystemException

Retrives the attribute with the specified name. The default implementation simply throws an exception.

Specified by:

getAttribute in interface FileSystem

Overrides:

getAttribute in class AbstractFileSystem

Parameters:

attrName - The name of the attribute.

Returns:

The value of the attribute.

Throws:

FileSystemException - If the file does not exist, or is being written, or if the attribute is unknown.

See Also:

• FileContent.getAttribute(java.lang.String)

getZipFile

protected ZipFile getZipFile()
                      throws FileSystemException

Overrides:

getZipFile in class ZipFileSystem

Throws:

FileSystemException