Package org.apache.lucene.mockfile

Class ExtrasFS

java.lang.Object

java.nio.file.spi.FileSystemProvider

org.apache.lucene.mockfile.FilterFileSystemProvider

org.apache.lucene.mockfile.ExtrasFS

public class ExtrasFS
extends FilterFileSystemProvider

Adds extra files/subdirectories when directories are created.

Lucene shouldn't care about these, but sometimes operating systems create special files themselves (.DS_Store, thumbs.db, .nfsXXX, ...), so we add them and see what breaks.

When a directory is created, sometimes an "extra" file or directory will be included with it (use isExtra(String) to check if it's one of those files).

All other filesystem operations are delegated as normal.

Field Summary

Fields inherited from class org.apache.lucene.mockfile.FilterFileSystemProvider

delegate, fileSystem, scheme

Constructor Summary

Constructors

Constructor	Description
ExtrasFS(FileSystem delegate, boolean active, boolean createDirectory)	Create a new instance, wrapping delegate.

Method Summary

Modifier and Type	Method	Description
void	createDirectory(Path dir, FileAttribute<?>... attrs)
static boolean	isExtra(String fileName)

Methods inherited from class org.apache.lucene.mockfile.FilterFileSystemProvider

checkAccess, copy, createLink, createSymbolicLink, delete, deleteIfExists, getFileAttributeView, getFileStore, getFileSystem, getPath, getScheme, isHidden, isSameFile, move, newAsynchronousFileChannel, newByteChannel, newDirectoryStream, newFileChannel, newFileSystem, newFileSystem, newInputStream, newOutputStream, onClose, readAttributes, readAttributes, readSymbolicLink, setAttribute, toDelegate, toString

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

installedProviders

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtrasFS

public ExtrasFS(FileSystem delegate,
                boolean active,
                boolean createDirectory)

Create a new instance, wrapping delegate.

Parameters:

active - true if we should create extra files

createDirectory - true if we should create directories instead of files. Ignored if active is false.

Method Detail

createDirectory

public void createDirectory(Path dir,
                            FileAttribute<?>... attrs)
                     throws IOException

Overrides:

createDirectory in class FilterFileSystemProvider

Throws:

IOException

isExtra

public static boolean isExtra(String fileName)

Returns:

Return true if fileName is one of the extra files added by this class.