org.jboss.virtual.spi
Interface VirtualFileHandler

All Superinterfaces:

Serializable

All Known Implementing Classes:

AbstractJarHandler, AbstractURIHandler, AbstractURLHandler, AbstractVirtualFileHandler, AssembledDirectoryHandler, AssembledFileHandler, ByteArrayHandler, DelegatingHandler, FileHandler, JarEntryHandler, JarHandler, LinkHandler, NestedJarFromStream, NestedJarFromStream.JarEntryContents, NestedJarHandler, NoCopyNestedJarHandler, SynthenticDirEntryHandler

public interface VirtualFileHandler
extends Serializable

A virtual file handler

Version:

$Revision: 44334 $

Author:

Scott.Stark@jboss.org, Adrian.Brock

Method Summary

void	close() Close the resources
boolean	exists() Tests whether the underlying implementation file still exists.
VirtualFileHandler	findChild(String path) Find a child
List<VirtualFileHandler>	getChildren(boolean ignoreErrors) Get the children
long	getLastModified() When the file was last modified
String	getName() Get the simple VF name (X.java)
VirtualFileHandler	getParent() Get the parent
String	getPathName() Get the VFS relative path name (org/jboss/X.java)
long	getSize() Get the size
VFSContext	getVFSContext() Get the VFSContext this file belongs to
VirtualFile	getVirtualFile() Get the virtual file wrapper
boolean	hasBeenModified() Returns true if the file has been modified since this method was last called Last modified time is initialized at handler instantiation.
boolean	isHidden() Whether it is hidden
boolean	isLeaf() Whether it is a simple leaf of the VFS, i.e.
InputStream	openStream() Access the file contents.
URI	toURI() Get the VF URI (file://root/org/jboss/X.java)
URL	toURL() Get the VF URL (file://root/org/jboss/X.java)
URL	toVfsUrl() Get a VFS-based URL

Method Detail

getName

String getName()

Get the simple VF name (X.java)

Returns:

the simple file name

getPathName

String getPathName()

Get the VFS relative path name (org/jboss/X.java)

Returns:

the VFS relative path name

toVfsUrl

URL toVfsUrl()
             throws MalformedURLException,
                    URISyntaxException

Get a VFS-based URL

Returns:

the url

Throws:

MalformedURLException

URISyntaxException

toURI

URI toURI()
          throws URISyntaxException

Get the VF URI (file://root/org/jboss/X.java)

Returns:

the full URI to the VF in the VFS.

Throws:

URISyntaxException - for an error parsing the URI

toURL

URL toURL()
          throws MalformedURLException,
                 URISyntaxException

Get the VF URL (file://root/org/jboss/X.java)

Returns:

the full URL to the VF in the VFS.

Throws:

URISyntaxException - for an error parsing the URI

MalformedURLException - for any error

getLastModified

long getLastModified()
                     throws IOException

When the file was last modified

Returns:

the last modified time

Throws:

IOException - for any problem accessing the virtual file system

IllegalStateException - if closed

hasBeenModified

boolean hasBeenModified()
                        throws IOException

Returns true if the file has been modified since this method was last called Last modified time is initialized at handler instantiation.

Returns:

Throws:

IOException

getSize

long getSize()
             throws IOException

Get the size

Returns:

the size

Throws:

IOException - for any problem accessing the virtual file system

IllegalStateException - if closed

exists

boolean exists()
               throws IOException

Tests whether the underlying implementation file still exists.

Returns:

true if the file exists, false otherwise.

Throws:

IOException - - thrown on failure to detect existence.

isLeaf

boolean isLeaf()
               throws IOException

Whether it is a simple leaf of the VFS, i.e. whether it can contain other files

Returns:

true if a simple file.

Throws:

IOException - for any problem accessing the virtual file system

IllegalStateException - if the file is closed

isHidden

boolean isHidden()
                 throws IOException

Whether it is hidden

Returns:

true if hidden.

Throws:

IOException - for any problem accessing the virtual file system

IllegalStateException - if closed

openStream

InputStream openStream()
                       throws IOException

Access the file contents.

Returns:

An InputStream for the file contents.

Throws:

IOException - for any problem accessing the virtual file system

IllegalStateException - if closed

getParent

VirtualFileHandler getParent()
                             throws IOException

Get the parent

Returns:

the parent

Throws:

IOException - for an error accessing the file system

IllegalStateException - if closed

getChildren

List<VirtualFileHandler> getChildren(boolean ignoreErrors)
                                     throws IOException

Get the children

Parameters:

ignoreErrors - whether to ignore errors

Returns:

the children

Throws:

IOException - for an error accessing the file system

IllegalStateException - if closed

findChild

VirtualFileHandler findChild(String path)
                             throws IOException

Find a child

Parameters:

path - the path

Returns:

the child

Throws:

IOException - for an error accessing the file system (or the child doesn't exist)

IllegalStateException - if closed

getVFSContext

VFSContext getVFSContext()

Get the VFSContext this file belongs to

Returns:

the context

Throws:

IllegalStateException - if closed

getVirtualFile

VirtualFile getVirtualFile()

Get the virtual file wrapper

Returns:

the wrapper

Throws:

IllegalStateException - if closed

close

void close()

Close the resources