Package org.apache.commons.vfs2.provider.jar

Class JarFileProvider

java.lang.Object

org.apache.commons.vfs2.provider.AbstractVfsComponent

org.apache.commons.vfs2.provider.AbstractVfsContainer

org.apache.commons.vfs2.provider.AbstractFileProvider

org.apache.commons.vfs2.provider.AbstractLayeredFileProvider

org.apache.commons.vfs2.provider.zip.ZipFileProvider

org.apache.commons.vfs2.provider.jar.JarFileProvider

All Implemented Interfaces:

Closeable, AutoCloseable, FileProvider, VfsComponent

public class JarFileProvider
extends ZipFileProvider

A file system provider for Jar files. Provides read-only file systems. This provides access to Jar specific features like Signing and Manifest Attributes.

Field Summary

Fields inherited from class org.apache.commons.vfs2.provider.zip.ZipFileProvider

capabilities

Constructor Summary

Constructors

Constructor	Description
JarFileProvider()	Constructs a new instance.

Method Summary

Modifier and Type	Method	Description
protected FileSystem	doCreateFileSystem(String scheme, FileObject file, FileSystemOptions fileSystemOptions)	Creates a layered file system.
Collection<Capability>	getCapabilities()	Gets the file system capabilities.

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

getConfigBuilder

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

createFileSystem, findFile

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

addFileSystem, close, closeFileSystem, findFileSystem, freeUnusedResources, getFileNameParser, parseUri, setFileNameParser

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

addComponent, removeComponent

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

getContext, getLogger, init, setContext, setLogger

Methods inherited from class java.lang.Object

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

Constructor Details

JarFileProvider

public JarFileProvider()

Constructs a new instance.

Method Details

doCreateFileSystem

protected FileSystem doCreateFileSystem(String scheme,
 FileObject file,
 FileSystemOptions fileSystemOptions)
                                 throws FileSystemException

Creates a layered file system. This method is called if the file system is not cached.

Overrides:

doCreateFileSystem in class ZipFileProvider

Parameters:

scheme - The URI scheme.

file - The file to create the file system on top of.

fileSystemOptions - options for new and underlying file systems.

Returns:

The file system.

Throws:

FileSystemException - if the file system cannot be created.

getCapabilities

public Collection<Capability> getCapabilities()

Description copied from interface: FileProvider

Gets the file system capabilities.

These are the same as on the file system, but available before the first file system was instantiated.

Specified by:

getCapabilities in interface FileProvider

Overrides:

getCapabilities in class ZipFileProvider

Returns:

a Collection of the file systems Capabilities.