org.apache.commons.vfs2.provider.compressed

Class CompressedFileFileProvider

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.compressed.CompressedFileFileProvider

All Implemented Interfaces:

Closeable, AutoCloseable, FileProvider, VfsComponent

Direct Known Subclasses:

Bzip2FileProvider, GzipFileProvider

public abstract class CompressedFileFileProvider
extends AbstractLayeredFileProvider

A file system provider for compressed files. Provides read-only file systems.

Constructor Summary

Constructors

Constructor and Description
CompressedFileFileProvider()

Method Summary

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

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, getConfigBuilder, 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 Detail

CompressedFileFileProvider

public CompressedFileFileProvider()

Method Detail

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.

Specified by:

doCreateFileSystem in class AbstractLayeredFileProvider

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.

createFileSystem

protected abstract FileSystem createFileSystem(FileName name,
                                               FileObject file,
                                               FileSystemOptions fileSystemOptions)
                                        throws FileSystemException

Throws:

FileSystemException

getCapabilities

public abstract 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 instanciated.

Returns:

a Collection of the file systems Capabilities.