JarFileSystem (commons-vfs API)

java.lang.Object
- org.apache.commons.vfs2.provider.AbstractVfsComponent
- - org.apache.commons.vfs2.provider.AbstractFileSystem
  - - org.apache.commons.vfs2.provider.zip.ZipFileSystem
    - - org.apache.commons.vfs2.provider.jar.JarFileSystem

All Implemented Interfaces:

FileSystem, VfsComponent
```
public class JarFileSystem
extends ZipFileSystem
```
A read-only file system for Jar files.

Author:

Commons VFS team

Constructor Summary

Constructors
Modifier Constructor and Description

protected JarFileSystem(AbstractFileName rootName, FileObject file, FileSystemOptions fileSystemOptions)

Constructors
Modifier	Constructor and Description
`protected`	`JarFileSystem(AbstractFileName rootName, FileObject file, FileSystemOptions fileSystemOptions)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected void`	`addCapabilities(java.util.Collection<Capability> caps)` Returns the capabilities of this file system.
`protected java.util.zip.ZipFile`	`createZipFile(java.io.File file)`
`protected ZipFileObject`	`createZipFileObject(AbstractFileName name, java.util.zip.ZipEntry entry)`
`java.lang.Object`	`getAttribute(java.lang.String attrName)` Retrives the attribute with the specified name.
`protected java.util.zip.ZipFile`	`getZipFile()`

Methods inherited from class org.apache.commons.vfs2.provider.zip.ZipFileSystem
createFile, doCloseCommunicationLink, init

Methods inherited from class org.apache.commons.vfs2.provider.AbstractFileSystem
addJunction, addListener, close, closeCommunicationLink, decorateFileObject, doReplicateFile, fireFileChanged, fireFileCreated, fireFileDeleted, getFileFromCache, getFileSystemManager, getFileSystemOptions, getLastModTimeAccuracy, getParentLayer, getRoot, getRootName, getRootURI, hasCapability, isOpen, isReleaseable, notifyAllStreamsClosed, putFileToCache, removeFileFromCache, removeJunction, 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

Methods inherited from interface org.apache.commons.vfs2.FileSystem
addJunction, addListener, getFileSystemManager, getFileSystemOptions, getLastModTimeAccuracy, getParentLayer, getRoot, getRootName, getRootURI, hasCapability, removeJunction, removeListener, replicateFile, resolveFile, resolveFile, setAttribute

Constructor Detail

JarFileSystem

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

Throws:: FileSystemException

Method Detail
- createZipFile
```
protected java.util.zip.ZipFile createZipFile(java.io.File file)
                                       throws FileSystemException
```
  Overrides:
  
  createZipFile in class ZipFileSystem
  
  Throws:
  
  FileSystemException
- createZipFileObject
```
protected ZipFileObject createZipFileObject(AbstractFileName name,
                                            java.util.zip.ZipEntry entry)
                                     throws FileSystemException
```
  Overrides:
  
  createZipFileObject in class ZipFileSystem
  
  Throws:
  
  FileSystemException
- addCapabilities
```
protected void addCapabilities(java.util.Collection<Capability> caps)
```
  Returns the capabilities of this file system.
  
  Overrides:
  
  addCapabilities in class ZipFileSystem
- getAttribute
```
public java.lang.Object getAttribute(java.lang.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 attiribute's name.
  
  Returns:
  
  The value of the attribute.
  
  Throws:
  
  FileSystemException - if an error occurs.
  
  See Also:
  
  FileContent.getAttribute(java.lang.String)
- getZipFile
```
protected java.util.zip.ZipFile getZipFile()
                                    throws FileSystemException
```
  Overrides:
  
  getZipFile in class ZipFileSystem
  
  Throws:
  
  FileSystemException

Class JarFileSystem

Constructor Summary

Method Summary

Methods inherited from class org.apache.commons.vfs2.provider.zip.ZipFileSystem

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

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

Methods inherited from class java.lang.Object

Methods inherited from interface org.apache.commons.vfs2.FileSystem

Constructor Detail

JarFileSystem

Method Detail

createZipFile

createZipFileObject

addCapabilities

getAttribute

getZipFile