org.apache.commons.vfs2.provider.jar

Class JarFileSystem

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.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.jar.Attributes	attributes

Constructor Summary

Constructors

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

Method Summary

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)
(package private) java.lang.Object	getAttribute(java.util.jar.Attributes.Name attrName)
java.lang.Object	getAttribute(java.lang.String attrName) Retrives the attribute with the specified name.
(package private) java.util.jar.Attributes	getAttributes()
protected java.util.zip.ZipFile	getZipFile()
(package private) java.util.jar.Attributes.Name	lookupName(java.lang.String attrName)

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

createFile, doCloseCommunicationLink, getCharset, getFileFromCache, init, putFileToCache, removeFileFromCache, toString

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

addJunction, addListener, close, closeCommunicationLink, decorateFileObject, doReplicateFile, fireFileChanged, fireFileCreated, fireFileDeleted, getFileSystemManager, getFileSystemOptions, getLastModTimeAccuracy, getParentLayer, getRoot, getRootName, getRootURI, hasCapability, isOpen, isReleaseable, notifyAllStreamsClosed, 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, wait, wait, wait

Field Detail

attributes

private java.util.jar.Attributes attributes

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

Parameters:

caps - collections of Capabilities, can be immutable.

getAttributes

java.util.jar.Attributes getAttributes()
                                throws java.io.IOException

Throws:

java.io.IOException

getAttribute

java.lang.Object getAttribute(java.util.jar.Attributes.Name attrName)
                       throws FileSystemException

Throws:

FileSystemException

lookupName

java.util.jar.Attributes.Name lookupName(java.lang.String attrName)

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