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 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 ZipFileProvider

getConfigBuilder

Methods inherited from class AbstractLayeredFileProvider

createFileSystem, findFile

Methods inherited from class AbstractFileProvider

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

Methods inherited from class AbstractVfsContainer

addComponent, removeComponent

Methods inherited from class AbstractVfsComponent

getContext, getLogger, init, setContext, setLogger

Methods inherited from class 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.