Module com.aoapps.io.filesystems

Package com.aoapps.io.filesystems

Class TempFileSystem

java.lang.Object

com.aoapps.io.filesystems.TempFileSystem

All Implemented Interfaces:

FileSystem

public class TempFileSystem
extends Object
implements FileSystem

A temporary file system stored in the Java heap.

Author:

AO Industries, Inc.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	TempFileSystem.FileSystemObject	TODO.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Map<Path,TempFileSystem.FileSystemObject>	files

Constructor Summary

Constructors

Constructor	Description
TempFileSystem()	Creates a new temp filesystem.

Method Summary

Modifier and Type	Method	Description
void	checkSubPath(Path parent, String name)	Temporary file systems support all possible paths.
Path	createDirectory(Path path)	Atomically creates a directory (must not have already existed).
Path	createFile(Path path)	Atomically creates an empty file (must not have already existed).
void	delete(Path path)	Deletes the file system object at the given path.
PathIterator	list(Path path)	Lists the children of the given path in no specific order.
FileLock	lock(Path path)	Locks a file in exclusive mode.
long	size(Path path)	Gets the size of the file system object at the given path.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.aoapps.io.filesystems.FileSystem

join, parsePath

Field Details

files

protected final Map<Path,TempFileSystem.FileSystemObject> files

Constructor Details

TempFileSystem

public TempFileSystem()

Creates a new temp filesystem.

Method Details

checkSubPath

public void checkSubPath(Path parent,
 String name)

Temporary file systems support all possible paths.

Specified by:

checkSubPath in interface FileSystem

Parameters:

name - The path to check, must be from this file system.

list

public PathIterator list(Path path)
                  throws NoSuchFileException,
NotDirectoryException

Description copied from interface: FileSystem

Lists the children of the given path in no specific order. It is possible that paths may be returned that no longer exist. It is also possible that new file system objects created after the beginning of iteration are not returned.

Specified by:

list in interface FileSystem

Parameters:

path - Must be from this file system.

Returns:

a read-only iterator of children

Throws:

NoSuchFileException - if the path does not exist

NotDirectoryException - if the path is not a directory

delete

public void delete(Path path)

Description copied from interface: FileSystem

Deletes the file system object at the given path.

Specified by:

delete in interface FileSystem

Parameters:

path - Must be from this file system.

size

public long size(Path path)

Description copied from interface: FileSystem

Gets the size of the file system object at the given path.

Specified by:

size in interface FileSystem

Parameters:

path - Must be from this file system.

createFile

public Path createFile(Path path)

Description copied from interface: FileSystem

Atomically creates an empty file (must not have already existed).

Specified by:

createFile in interface FileSystem

Returns:

returns the path

createDirectory

public Path createDirectory(Path path)

Description copied from interface: FileSystem

Atomically creates a directory (must not have already existed).

Specified by:

createDirectory in interface FileSystem

Returns:

returns the path

lock

public FileLock lock(Path path)

Description copied from interface: FileSystem

Locks a file in exclusive mode. File range and shared locks not currently supported. The lock must be closed to unlock, usually in a try/finally or try-with-resources block. The locks are not reentrant, attempting to obtain the lock from the same thread will result in deadlock.

Specified by:

lock in interface FileSystem

See Also:

• FileLock.close()