org.cip4.jdflib.util
Class RollingBackupFile

java.lang.Object
  java.io.File
      org.cip4.jdflib.util.RollingBackupFile

All Implemented Interfaces:

Serializable, Comparable<File>

public class RollingBackupFile
extends File

Author:

Dr. Rainer Prosi, Heidelberger Druckmaschinen AG class to generate rolling backup files using a simple .n naming algorithm. The oldest file dies when the maximum number is reached 08.12.2008

See Also:

Serialized Form

Field Summary

Fields inherited from class java.io.File

pathSeparator, pathSeparatorChar, separator, separatorChar

Constructor Summary

RollingBackupFile(File file, int nBackupp)

RollingBackupFile(String pathname, int nBackupp)

Method Summary

void	clearAll() remove all files, including main file
File	getNewFile()
File	getNewFile(String extension) get a new file for a given extension
File	getOldFile(int i)

Methods inherited from class java.io.File

canExecute, canRead, canWrite, compareTo, createNewFile, createTempFile, createTempFile, delete, deleteOnExit, equals, exists, getAbsoluteFile, getAbsolutePath, getCanonicalFile, getCanonicalPath, getFreeSpace, getName, getParent, getParentFile, getPath, getTotalSpace, getUsableSpace, hashCode, isAbsolute, isDirectory, isFile, isHidden, lastModified, length, list, list, listFiles, listFiles, listFiles, listRoots, mkdir, mkdirs, renameTo, setExecutable, setExecutable, setLastModified, setReadable, setReadable, setReadOnly, setWritable, setWritable, toString, toURI, toURL

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RollingBackupFile

public RollingBackupFile(String pathname,
                         int nBackupp)

Parameters:

pathname - the base filename

nBackupp - the number of backups to retain

RollingBackupFile

public RollingBackupFile(File file,
                         int nBackupp)

Parameters:

file - the base file

nBackupp - the number of backups to retain

Method Detail

getNewFile

public File getNewFile()

Returns:

the file to write, i.e. this

getNewFile

public File getNewFile(String extension)

get a new file for a given extension

Parameters:

extension -

Returns:

getOldFile

public File getOldFile(int i)

Parameters:

i - the index of the file to read

Returns:

the file to read, with backup

clearAll

public void clearAll()

remove all files, including main file