org.apache.nifi.processors.standard.ftp.filesystem

Class DefaultVirtualFileSystem

java.lang.Object

org.apache.nifi.processors.standard.ftp.filesystem.DefaultVirtualFileSystem

All Implemented Interfaces:

VirtualFileSystem

public class DefaultVirtualFileSystem
extends Object
implements VirtualFileSystem

Field Summary

Fields

Modifier and Type	Field and Description
private List<VirtualPath>	existingPaths
private ReentrantReadWriteLock	lock

Fields inherited from interface org.apache.nifi.processors.standard.ftp.filesystem.VirtualFileSystem

ROOT

Constructor Summary

Constructors

Constructor and Description
DefaultVirtualFileSystem()

Method Summary

Modifier and Type	Method and Description
boolean	delete(VirtualPath virtualFile) Deletes the file or directory specified by the path received as a parameter.
boolean	exists(VirtualPath virtualFile) Checks if the path received as a parameter already exists in the file system.
int	getTotalNumberOfFiles() Returns the number of all the files and folders in the file system.
private boolean	hasSubDirectories(VirtualPath directory)
private boolean	isChildOf(VirtualPath parent, VirtualPath childCandidate)
List<VirtualPath>	listChildren(VirtualPath parent) Lists the files and directories that are directly under the directory specified by the path received as a parameter.
boolean	mkdir(VirtualPath newFile) Makes a new directory specified by the path received as a parameter.

Methods inherited from class java.lang.Object

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

Field Detail

lock

private final ReentrantReadWriteLock lock

existingPaths

private final List<VirtualPath> existingPaths

Constructor Detail

DefaultVirtualFileSystem

public DefaultVirtualFileSystem()

Method Detail

mkdir

public boolean mkdir(VirtualPath newFile)

Description copied from interface: VirtualFileSystem

Makes a new directory specified by the path received as a parameter.

Specified by:

mkdir in interface VirtualFileSystem

Parameters:

newFile - The path that points to the directory that should be created.

Returns:

true if the new directory got created; false otherwise.

exists

public boolean exists(VirtualPath virtualFile)

Description copied from interface: VirtualFileSystem

Checks if the path received as a parameter already exists in the file system.

Specified by:

exists in interface VirtualFileSystem

Parameters:

virtualFile - The path that may or may not exist in the file system.

Returns:

true if the specified path already exists in the file system; false otherwise.

delete

public boolean delete(VirtualPath virtualFile)

Description copied from interface: VirtualFileSystem

Deletes the file or directory specified by the path received as a parameter.

Specified by:

delete in interface VirtualFileSystem

Parameters:

virtualFile - The path pointing to the file or directory that should be deleted.

Returns:

true if the file or directory got deleted; false otherwise.

hasSubDirectories

private boolean hasSubDirectories(VirtualPath directory)

isChildOf

private boolean isChildOf(VirtualPath parent,
                          VirtualPath childCandidate)

listChildren

public List<VirtualPath> listChildren(VirtualPath parent)

Description copied from interface: VirtualFileSystem

Lists the files and directories that are directly under the directory specified by the path received as a parameter.

Specified by:

listChildren in interface VirtualFileSystem

Parameters:

parent - The path specifying the directory the contents of which should be listed.

Returns:

The list of paths that point to the contents of the parent directory.

getTotalNumberOfFiles

public int getTotalNumberOfFiles()

Description copied from interface: VirtualFileSystem

Returns the number of all the files and folders in the file system.

Specified by:

getTotalNumberOfFiles in interface VirtualFileSystem

Returns:

The number of files and folders in the file system.