org.cip4.jdflib.util
Class BackupDirectory

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

All Implemented Interfaces:

Serializable, Comparable<File>, IPersistable

Direct Known Subclasses:

RollingBackupDirectory

public class BackupDirectory
extends File
implements IPersistable

Author:

Dr. Rainer Prosi, Heidelberger Druckmaschinen AG class to manage a directory by removing the oldest files whenever a new file is created 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

BackupDirectory(File file, int nBackupp)

BackupDirectory(String pathname, int nBackupp)

Method Summary

File	getNewFile(File localFile) creates a new file in this and assures than no more than nBackup files remain
File	getNewFile(String fileName)
boolean	persist() physically persist the whatever stuff
String	toString()

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, toURI, toURL

Methods inherited from class java.lang.Object

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

Constructor Detail

BackupDirectory

public BackupDirectory(String pathname,
                       int nBackupp)

Parameters:

pathname - the Directory

nBackupp - the number of backups to retain

Throws:

IllegalArgumentException - if file exists and is not a directory

BackupDirectory

public BackupDirectory(File file,
                       int nBackupp)
                throws IllegalArgumentException

Parameters:

file - the base file

nBackupp - the number of backups to retain

Throws:

IllegalArgumentException - if file exists and is not a directory

Method Detail

getNewFile

public File getNewFile(File localFile)

creates a new file in this and assures than no more than nBackup files remain

Parameters:

localFile - the local file to place in this directory

Returns:

the file to write, null if an io exception occurred when creating it

getNewFile

public File getNewFile(String fileName)

Parameters:

fileName -

Returns:

toString

public String toString()

Overrides:

toString in class File

See Also:

File.toString()

persist

public boolean persist()

Description copied from interface: IPersistable

physically persist the whatever stuff

Specified by:

persist in interface IPersistable

Returns:

true if persist was successful

See Also:

IPersistable.persist()