org.deepfs.util
Class FSWalker

java.lang.Object
  org.deepfs.util.FSWalker

All Implemented Interfaces:

FSTraversal

public final class FSWalker
extends Object
implements FSTraversal

Perform a preorder traversal of a directory hierarchy and notify visitors.

Author:

Workgroup DBIS, University of Konstanz 2005-10, ISC License, Alexander Holupirek

Constructor Summary

FSWalker(FSTraversal... v)
Creates a new FSWalker and registers all visitors.

Method Summary

void	levelUpdate(int l) Event triggered once tree level has changed.
void	postDirectoryVisit(File d) Visits a directory node in postorder (leaving directory).
void	postTraversalVisit(File d) Fired once the filesystem traversal finished.
void	preDirectoryVisit(File d) Visits a directory node in preorder (enter directory).
void	preTraversalVisit(File d) Fired before the filesystem traversal starts.
void	regularFileVisit(File f) Visits a regular file.
void	symLinkVisit(File f) Visits a symbolic link.
void	traverse(File d) Entry point for a directory traversal.

Methods inherited from class java.lang.Object

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

Constructor Detail

FSWalker

public FSWalker(FSTraversal... v)

Creates a new FSWalker and registers all visitors.

Parameters:

v - visitors implementing #FSTraversal to be registered

Method Detail

traverse

public void traverse(File d)

Entry point for a directory traversal.

Parameters:

d - directory traversal should start from

levelUpdate

public void levelUpdate(int l)

Description copied from interface: FSTraversal

Event triggered once tree level has changed.

Specified by:

levelUpdate in interface FSTraversal

Parameters:

l - relative level/depth of traversal in directory hierarchy

postDirectoryVisit

public void postDirectoryVisit(File d)

Description copied from interface: FSTraversal

Visits a directory node in postorder (leaving directory).

Specified by:

postDirectoryVisit in interface FSTraversal

Parameters:

d - the directory node

postTraversalVisit

public void postTraversalVisit(File d)

Description copied from interface: FSTraversal

Fired once the filesystem traversal finished.

Specified by:

postTraversalVisit in interface FSTraversal

Parameters:

d - the directory node the traversal started from

preDirectoryVisit

public void preDirectoryVisit(File d)

Description copied from interface: FSTraversal

Visits a directory node in preorder (enter directory).

Specified by:

preDirectoryVisit in interface FSTraversal

Parameters:

d - the directory node

preTraversalVisit

public void preTraversalVisit(File d)

Description copied from interface: FSTraversal

Fired before the filesystem traversal starts.

Specified by:

preTraversalVisit in interface FSTraversal

Parameters:

d - the directory node the traversal starts from

regularFileVisit

public void regularFileVisit(File f)

Description copied from interface: FSTraversal

Visits a regular file.

Specified by:

regularFileVisit in interface FSTraversal

Parameters:

f - the file

symLinkVisit

public void symLinkVisit(File f)

Description copied from interface: FSTraversal

Visits a symbolic link.

Specified by:

symLinkVisit in interface FSTraversal

Parameters:

f - the file