com.oreilly.servlet.multipart
Class DefaultFileRenamePolicy

java.lang.Object
  com.oreilly.servlet.multipart.DefaultFileRenamePolicy

All Implemented Interfaces:

FileRenamePolicy

public class DefaultFileRenamePolicy
extends java.lang.Object
implements FileRenamePolicy

Implements a renaming policy that adds increasing integers to the body of any file that collides. For example, if foo.gif is being uploaded and a file by the same name already exists, this logic will rename the upload foo1.gif. A second upload by the same name would be foo2.gif. Note that for safety the rename() method creates a zero-length file with the chosen name to act as a marker that the name is taken even before the upload starts writing the bytes.

Version:

1.1, 2002/11/05, making thread safe with createNewFile(), 1.0, 2002/04/30, initial revision, thanks to Yoonjung Lee for this idea

Author:

Jason Hunter

Constructor Summary

DefaultFileRenamePolicy()

Method Summary

java.io.File

rename(java.io.File f) Returns a File object holding a new name for the specified file.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultFileRenamePolicy

public DefaultFileRenamePolicy()

Method Detail

rename

public java.io.File rename(java.io.File f)

Description copied from interface: FileRenamePolicy

Returns a File object holding a new name for the specified file.

Specified by:

rename in interface FileRenamePolicy

See Also:

FilePart.writeTo(File fileOrDirectory)