sun.nio.fs

Class AbstractFileSystemProvider

java.lang.Object

java.nio.file.spi.FileSystemProvider

sun.nio.fs.AbstractFileSystemProvider

public abstract class AbstractFileSystemProvider
extends FileSystemProvider

Base implementation class of FileSystemProvider

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractFileSystemProvider()

Method Summary

Modifier and Type	Method and Description
void	delete(Path file) Deletes a file.
boolean	deleteIfExists(Path file) Deletes a file if it exists.
boolean	exists(Path file) Checks the existence of a file.
boolean	isDirectory(Path file) Tests whether a file is a directory.
boolean	isRegularFile(Path file) Tests whether a file is a regular file with opaque content.
Map<String,Object>	readAttributes(Path file, String attributes, LinkOption... options) Reads a set of file attributes as a bulk operation.
void	setAttribute(Path file, String attribute, Object value, LinkOption... options) Sets the value of a file attribute.

Methods inherited from class java.nio.file.spi.FileSystemProvider

checkAccess, copy, createDirectory, createLink, createSymbolicLink, getFileAttributeView, getFileStore, getFileSystem, getPath, getScheme, installedProviders, isHidden, isSameFile, move, newAsynchronousFileChannel, newByteChannel, newDirectoryStream, newFileChannel, newFileSystem, newFileSystem, newInputStream, newOutputStream, readAttributes, readSymbolicLink

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractFileSystemProvider

protected AbstractFileSystemProvider()

Method Detail

setAttribute

public final void setAttribute(Path file,
                               String attribute,
                               Object value,
                               LinkOption... options)
                        throws IOException

Description copied from class: FileSystemProvider

Sets the value of a file attribute. This method works in exactly the manner specified by the Files.setAttribute(java.nio.file.Path, java.lang.String, java.lang.Object, java.nio.file.LinkOption...) method.

Specified by:

setAttribute in class FileSystemProvider

Parameters:

file - the path to the file

attribute - the attribute to set

value - the attribute value

options - options indicating how symbolic links are handled

Throws:

IOException - If an I/O error occurs

readAttributes

public final Map<String,Object> readAttributes(Path file,
                                               String attributes,
                                               LinkOption... options)
                                        throws IOException

Description copied from class: FileSystemProvider

Reads a set of file attributes as a bulk operation. This method works in exactly the manner specified by the Files.readAttributes(Path,String,LinkOption[]) method.

Specified by:

readAttributes in class FileSystemProvider

Parameters:

file - the path to the file

attributes - the attributes to read

options - options indicating how symbolic links are handled

Returns:

a map of the attributes returned; may be empty. The map's keys are the attribute names, its values are the attribute values

Throws:

IOException - If an I/O error occurs

delete

public final void delete(Path file)
                  throws IOException

Description copied from class: FileSystemProvider

Deletes a file. This method works in exactly the manner specified by the Files.delete(java.nio.file.Path) method.

Specified by:

delete in class FileSystemProvider

Parameters:

file - the path to the file to delete

Throws:

NoSuchFileException - if the file does not exist (optional specific exception)

DirectoryNotEmptyException - if the file is a directory and could not otherwise be deleted because the directory is not empty (optional specific exception)

IOException - if an I/O error occurs

deleteIfExists

public final boolean deleteIfExists(Path file)
                             throws IOException

Description copied from class: FileSystemProvider

Deletes a file if it exists. This method works in exactly the manner specified by the Files.deleteIfExists(java.nio.file.Path) method.

The default implementation of this method simply invokes FileSystemProvider.delete(java.nio.file.Path) ignoring the NoSuchFileException when the file does not exist. It may be overridden where appropriate.

Overrides:

deleteIfExists in class FileSystemProvider

Parameters:

file - the path to the file to delete

Returns:

true if the file was deleted by this method; false if the file could not be deleted because it did not exist

Throws:

DirectoryNotEmptyException - if the file is a directory and could not otherwise be deleted because the directory is not empty (optional specific exception)

IOException - if an I/O error occurs

isDirectory

public boolean isDirectory(Path file)

Tests whether a file is a directory.

Returns:

true if the file is a directory; false if the file does not exist, is not a directory, or it cannot be determined if the file is a directory or not.

isRegularFile

public boolean isRegularFile(Path file)

Tests whether a file is a regular file with opaque content.

Returns:

true if the file is a regular file; false if the file does not exist, is not a regular file, or it cannot be determined if the file is a regular file or not.

exists

public boolean exists(Path file)

Checks the existence of a file.

Returns:

true if the file exists; false if the file does not exist or its existence cannot be determined.