Package org.apache.commons.vfs2.provider.local

Class LocalFile

java.lang.Object

org.apache.commons.vfs2.provider.AbstractFileObject<LocalFileSystem>

org.apache.commons.vfs2.provider.local.LocalFile

All Implemented Interfaces:

Closeable, AutoCloseable, Comparable<FileObject>, Iterable<FileObject>, FileObject

public class LocalFile
extends AbstractFileObject<LocalFileSystem>

A file object implementation which uses direct file access.

Field Summary

Fields inherited from class org.apache.commons.vfs2.provider.AbstractFileObject

DEFAULT_BUFFER_SIZE

Fields inherited from interface org.apache.commons.vfs2.FileObject

EMPTY_ARRAY

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LocalFile(LocalFileSystem fileSystem, String rootFile, AbstractFileName name)	Creates a non-root file.

Method Summary

Modifier and Type	Method	Description
protected void	doAttach()	Attaches this file object to its file resource.
protected void	doCreateFolder()	Creates this folder.
protected void	doDelete()	Deletes this file, and all children.
protected long	doGetContentSize()	Returns the size of the file content (in bytes).
protected InputStream	doGetInputStream(int bufferSize)	Creates an input stream to read the file contents.
protected long	doGetLastModifiedTime()	Gets the last modified time of this file.
protected OutputStream	doGetOutputStream(boolean append)	Creates an output stream to write the file content to.
protected RandomAccessContent	doGetRandomAccessContent(RandomAccessMode mode)	Creates access to the file for random i/o.
protected FileType	doGetType()	Returns the file's type.
protected boolean	doIsExecutable()	Determines if this file is hidden.
protected boolean	doIsHidden()	Determines if this file is hidden.
protected boolean	doIsReadable()	Determines if this file can be read.
protected boolean	doIsSameFile(FileObject destFile)	Checks if this fileObject is the same file as destFile just with a different name.
protected boolean	doIsSymbolicLink()	Determines if this file is a symbolic link.
protected boolean	doIsWriteable()	Determines if this file can be written to.
protected String[]	doListChildren()	Returns the children of the file.
protected void	doRename(FileObject newFile)	rename this file
protected boolean	doSetExecutable(boolean executable, boolean ownerOnly)	Make the file executable.
protected boolean	doSetLastModifiedTime(long modtime)	Sets the last modified time of this file.
protected boolean	doSetReadable(boolean readable, boolean ownerOnly)	Make the file or folder readable.
protected boolean	doSetWritable(boolean writable, boolean ownerOnly)	Make the file or folder writable.
protected File	getLocalFile()	Gets the local file that this file object represents.
String	toString()	Returns the URI of the file.

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

canRenameTo, childrenChanged, close, compareTo, copyFrom, createFile, createFolder, delete, delete, deleteAll, doCreateFileContent, doDetach, doGetAttributes, doGetCertificates, doGetInputStream, doListChildrenResolved, doRemoveAttribute, doSetAttribute, endOutput, exists, finalize, findFiles, findFiles, getAbstractFileSystem, getChild, getChildren, getContent, getFileContentInfoFactory, getFileOperations, getFileSystem, getInputStream, getInputStream, getName, getOutputStream, getOutputStream, getParent, getPublicURIString, getRandomAccessContent, getType, getURL, handleChanged, handleCreate, handleDelete, holdObject, injectType, isAttached, isContentOpen, isExecutable, isFile, isFolder, isHidden, isReadable, isSameFile, isSymbolicLink, isWriteable, iterator, listFiles, moveTo, notifyAllStreamsClosed, onChange, onChildrenChanged, refresh, resolveFile, resolveFile, setExecutable, setReadable, setWritable

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.vfs2.FileObject

getPath, getURI

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

LocalFile

protected LocalFile(LocalFileSystem fileSystem,
 String rootFile,
 AbstractFileName name)

Creates a non-root file.

Parameters:

fileSystem - the file system this file belongs to.

rootFile - the root file for the file system.

name - the file name on this file system.

Method Details

doAttach

protected void doAttach()
                 throws Exception

Attaches this file object to its file resource.

Overrides:

doAttach in class AbstractFileObject<LocalFileSystem>

Throws:

Exception - if an error occurs.

doCreateFolder

protected void doCreateFolder()
                       throws Exception

Creates this folder.

Overrides:

doCreateFolder in class AbstractFileObject<LocalFileSystem>

Throws:

Exception - if an error occurs.

doDelete

protected void doDelete()
                 throws Exception

Deletes this file, and all children.

Overrides:

doDelete in class AbstractFileObject<LocalFileSystem>

Throws:

Exception - if an error occurs.

doGetContentSize

protected long doGetContentSize()
                         throws Exception

Returns the size of the file content (in bytes).

Specified by:

doGetContentSize in class AbstractFileObject<LocalFileSystem>

Returns:

The size of the file in bytes.

Throws:

Exception - if an error occurs.

doGetInputStream

protected InputStream doGetInputStream(int bufferSize)
                                throws Exception

Creates an input stream to read the file contents.

Overrides:

doGetInputStream in class AbstractFileObject<LocalFileSystem>

Parameters:

bufferSize - Buffer size hint.

Returns:

An InputStream to read the file content.

Throws:

Exception - if an error occurs.

doGetLastModifiedTime

protected long doGetLastModifiedTime()
                              throws FileSystemException

Gets the last modified time of this file.

Overrides:

doGetLastModifiedTime in class AbstractFileObject<LocalFileSystem>

Returns:

The last modification time.

Throws:

FileSystemException

doGetOutputStream

protected OutputStream doGetOutputStream(boolean append)
                                  throws IOException

Creates an output stream to write the file content to.

Overrides:

doGetOutputStream in class AbstractFileObject<LocalFileSystem>

Parameters:

append - true if the file should be appended to, false if it should be overwritten.

Returns:

An OutputStream to write to the file.

Throws:

IOException

doGetRandomAccessContent

protected RandomAccessContent doGetRandomAccessContent(RandomAccessMode mode)
                                                throws Exception

Description copied from class: AbstractFileObject

Creates access to the file for random i/o. Is only called if AbstractFileObject.doGetType() returns FileType.FILE.

It is guaranteed that there are no open output streams for this file when this method is called.

Overrides:

doGetRandomAccessContent in class AbstractFileObject<LocalFileSystem>

Parameters:

mode - The mode to access the file.

Returns:

The RandomAccessContext.

Throws:

Exception - if an error occurs.

doGetType

protected FileType doGetType()

Returns the file's type.

Specified by:

doGetType in class AbstractFileObject<LocalFileSystem>

Returns:

the type of the file.

doIsExecutable

protected boolean doIsExecutable()

Determines if this file is hidden.

Overrides:

doIsExecutable in class AbstractFileObject<LocalFileSystem>

Returns:

true if the file is executable, false otherwise.

doIsHidden

protected boolean doIsHidden()

Determines if this file is hidden.

Overrides:

doIsHidden in class AbstractFileObject<LocalFileSystem>

Returns:

true if the file is hidden, false otherwise.

doIsReadable

protected boolean doIsReadable()
                        throws FileSystemException

Determines if this file can be read.

Overrides:

doIsReadable in class AbstractFileObject<LocalFileSystem>

Returns:

true if the file is readable, false otherwise.

Throws:

FileSystemException

doIsSameFile

protected boolean doIsSameFile(FileObject destFile)
                        throws FileSystemException

Description copied from class: AbstractFileObject

Checks if this fileObject is the same file as destFile just with a different name. E.g. for case-insensitive file systems like Windows.

Overrides:

doIsSameFile in class AbstractFileObject<LocalFileSystem>

Parameters:

destFile - The file to compare to.

Returns:

true if the FileObjects are the same.

Throws:

FileSystemException - if an error occurs.

doIsSymbolicLink

protected boolean doIsSymbolicLink()
                            throws FileSystemException

Determines if this file is a symbolic link.

Overrides:

doIsSymbolicLink in class AbstractFileObject<LocalFileSystem>

Returns:

true if the file is readable, false otherwise.

Throws:

FileSystemException

Since:

2.4

doIsWriteable

protected boolean doIsWriteable()
                         throws FileSystemException

Determines if this file can be written to.

Overrides:

doIsWriteable in class AbstractFileObject<LocalFileSystem>

Returns:

true if the file is writable.

Throws:

FileSystemException

doListChildren

protected String[] doListChildren()
                           throws Exception

Returns the children of the file.

Specified by:

doListChildren in class AbstractFileObject<LocalFileSystem>

Returns:

a possible empty String array if the file is a directory or null or an exception if the file is not a directory or can't be read.

Throws:

Exception - if an error occurs.

doRename

protected void doRename(FileObject newFile)
                 throws Exception

rename this file

Overrides:

doRename in class AbstractFileObject<LocalFileSystem>

Parameters:

newFile - A FileObject with the new file name.

Throws:

Exception - if an error occurs.

doSetExecutable

protected boolean doSetExecutable(boolean executable,
 boolean ownerOnly)
                           throws Exception

Description copied from class: AbstractFileObject

Make the file executable.

Only called if AbstractFileObject.doGetType() does not return FileType.IMAGINARY.

This implementation returns false.

Overrides:

doSetExecutable in class AbstractFileObject<LocalFileSystem>

Parameters:

executable - True to allow access, false to disallow.

ownerOnly - If true, the permission applies only to the owner; otherwise, it applies to everybody.

Returns:

true if the operation succeeded.

Throws:

Exception - Any Exception thrown is wrapped in FileSystemException.

See Also:

• AbstractFileObject.setExecutable(boolean, boolean)

doSetLastModifiedTime

protected boolean doSetLastModifiedTime(long modtime)
                                 throws FileSystemException

Sets the last modified time of this file.

Overrides:

doSetLastModifiedTime in class AbstractFileObject<LocalFileSystem>

Parameters:

modtime - The last modification time.

Returns:

true if the time was set.

Throws:

FileSystemException

Since:

2.0

doSetReadable

protected boolean doSetReadable(boolean readable,
 boolean ownerOnly)
                         throws Exception

Description copied from class: AbstractFileObject

Make the file or folder readable.

Only called if AbstractFileObject.doGetType() does not return FileType.IMAGINARY.

This implementation returns false.

Overrides:

doSetReadable in class AbstractFileObject<LocalFileSystem>

Parameters:

readable - True to allow access, false to disallow

ownerOnly - If true, the permission applies only to the owner; otherwise, it applies to everybody.

Returns:

true if the operation succeeded

Throws:

Exception - Any Exception thrown is wrapped in FileSystemException.

See Also:

• AbstractFileObject.setReadable(boolean, boolean)

doSetWritable

protected boolean doSetWritable(boolean writable,
 boolean ownerOnly)
                         throws Exception

Description copied from class: AbstractFileObject

Make the file or folder writable.

Only called if AbstractFileObject.doGetType() does not return FileType.IMAGINARY.

Overrides:

doSetWritable in class AbstractFileObject<LocalFileSystem>

Parameters:

writable - True to allow access, false to disallow

ownerOnly - If true, the permission applies only to the owner; otherwise, it applies to everybody.

Returns:

true if the operation succeeded

Throws:

Exception - Any Exception thrown is wrapped in FileSystemException.

See Also:

• AbstractFileObject.setWritable(boolean, boolean)

getLocalFile

protected File getLocalFile()

Gets the local file that this file object represents.

Returns:

the local file that this file object represents.

toString

public String toString()

Returns the URI of the file.

Overrides:

toString in class AbstractFileObject<LocalFileSystem>

Returns:

The URI of the file.