mnemosyne.archiver
Class ArchiveDirectory

java.lang.Object
  |
  +--mnemosyne.archiver.ArchiveDirectory

Direct Known Subclasses:

SnapshotDirectory, TransactionDirectory

public abstract class ArchiveDirectory

extends java.lang.Object

Version:

$Id: ArchiveDirectory.java,v 1.1.1.1 2004/08/07 06:40:49 charlesblaxland Exp $

Field Summary

protected java.util.SortedSet

archiveFiles

Constructor Summary

protected

ArchiveDirectory(java.lang.String directoryName, ArchiveSequence sequence)

Method Summary

protected java.io.File	allocateNewInProgressArchiveFile()
protected java.lang.String	buildArchiveFilename(long sequenceNumber)
protected java.io.File	constructArchiveFile(java.lang.String archiveFilename)
protected java.io.ObjectInputStream	createInputStream(java.io.InputStream input)
protected java.io.ObjectOutputStream	createOutputStream(java.io.OutputStream output)
protected abstract java.lang.String	extension()
protected long	extractFileSequenceNumber(java.lang.String filename)
protected boolean	isEmpty()
protected boolean	isValidArchiveFile(java.lang.String filename)
protected void	onArchiveComplete(java.io.File inProgressFile)
protected abstract java.lang.String	postfix()
protected abstract java.lang.String	prefix()
protected java.lang.Object	readArchiveFile(java.io.File archiveFile)
void	writeArchiveFile(java.lang.Object obj)

Methods inherited from class java.lang.Object

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

Field Detail

archiveFiles

protected java.util.SortedSet archiveFiles

Constructor Detail

ArchiveDirectory

protected ArchiveDirectory(java.lang.String directoryName,
                           ArchiveSequence sequence)

Method Detail

prefix

protected abstract java.lang.String prefix()

postfix

protected abstract java.lang.String postfix()

extension

protected abstract java.lang.String extension()

createOutputStream

protected java.io.ObjectOutputStream createOutputStream(java.io.OutputStream output)
                                                 throws java.io.IOException

java.io.IOException

createInputStream

protected java.io.ObjectInputStream createInputStream(java.io.InputStream input)
                                               throws java.io.IOException

java.io.IOException

isValidArchiveFile

protected boolean isValidArchiveFile(java.lang.String filename)

isEmpty

protected boolean isEmpty()

extractFileSequenceNumber

protected long extractFileSequenceNumber(java.lang.String filename)
                                  throws java.lang.NumberFormatException

java.lang.NumberFormatException

allocateNewInProgressArchiveFile

protected java.io.File allocateNewInProgressArchiveFile()

constructArchiveFile

protected java.io.File constructArchiveFile(java.lang.String archiveFilename)

buildArchiveFilename

protected java.lang.String buildArchiveFilename(long sequenceNumber)

readArchiveFile

protected java.lang.Object readArchiveFile(java.io.File archiveFile)
                                    throws ArchiverException

ArchiverException

writeArchiveFile

public void writeArchiveFile(java.lang.Object obj)
                      throws ArchiverException

ArchiverException

onArchiveComplete

protected void onArchiveComplete(java.io.File inProgressFile)
                          throws ArchiverException

ArchiverException