backupmanagment

Class BackupManager

java.lang.Object

backupmanagment.BackupManager

public class BackupManager
extends java.lang.Object

Takes care of loading instances of BackupInstance and registers new ones.
Created by Martin Sicho on 19.3.14.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<java.lang.String,BackupInstance>	mBackupList This Map ensures quick accessibility of all scheduled backups.
private java.text.DateFormat	mDateFormatter This DateFormat instance formats the Date for the case when the backup name was not specified.
private java.util.List<java.lang.String>	mFailedToLoad The names of the backups that failed to load for any reason are stored here.

Constructor Summary

Constructors

Constructor and Description
BackupManager() The BackupManager constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	backupExists(java.lang.String name) Check whether a backup with the specified name exists in the BackupManager or not.
boolean	backupFileExists(java.lang.String name) Check whether a backup file with the specified name exists or not.
void	deleteBackup(java.lang.String name) Attempts to delete a backup.
private void	deserializeBackupList() This method attempts to load all backups that were previously saved to disc.
void	registerNewBackup(BackupInstanceFramework framework) This method is used to schedule a new backup according to rules specified by the BackupInstanceFramework and implements all the logic to be able to do so.
private void	serializeBackup(java.lang.String key) This method takes a backup name and saves it to the disc as a serialized instance of BackupInstance.
private void	serializeBackupList() This method takes the mBackupList and saves it to the disc as separate serialized instances of BackupInstance.
void	synchronize() Synchronizes all scheduled backups
void	synchronize(java.lang.String name) Synchronizes only a specified backup.
void	updateView(BackupViewer view) This method is used to provide information about backups to a view that implements the BackupViewer interface.

Methods inherited from class java.lang.Object

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

Field Detail

mDateFormatter

private java.text.DateFormat mDateFormatter

This DateFormat instance formats the Date for the case when the backup name was not specified. It is used in the construction of a default unique name that is still human readable.

mBackupList

private java.util.Map<java.lang.String,BackupInstance> mBackupList

This Map ensures quick accessibility of all scheduled backups.

mFailedToLoad

private java.util.List<java.lang.String> mFailedToLoad

The names of the backups that failed to load for any reason are stored here.

Constructor Detail

BackupManager

public BackupManager()

The BackupManager constructor. It creates the directory into which the scheduled backups are serialized or it loads backups that are already scheduled.

Method Detail

registerNewBackup

public void registerNewBackup(BackupInstanceFramework framework)

This method is used to schedule a new backup according to rules specified by the BackupInstanceFramework and implements all the logic to be able to do so.

Parameters:

framework - instance of BackupInstanceFramework

backupExists

public boolean backupExists(java.lang.String name)

Check whether a backup with the specified name exists in the BackupManager or not.

Parameters:

name - name to be checked

Returns:

returns true, if it exists, false if it doesn't

backupFileExists

public boolean backupFileExists(java.lang.String name)

Check whether a backup file with the specified name exists or not.

Parameters:

name - name of the backup file

Returns:

@return returns true, if it exists, false if it doesn't

synchronize

public void synchronize()

Synchronizes all scheduled backups

synchronize

public void synchronize(java.lang.String name)

Synchronizes only a specified backup.

Parameters:

name - name of the backup to be updated

updateView

public void updateView(BackupViewer view)

This method is used to provide information about backups to a view that implements the BackupViewer interface.

Parameters:

view - instance of a class that implemets the BackupViewer interface.

deleteBackup

public void deleteBackup(java.lang.String name)

Attempts to delete a backup.

Parameters:

name - backup name

serializeBackup

private void serializeBackup(java.lang.String key)

This method takes a backup name and saves it to the disc as a serialized instance of BackupInstance.

Parameters:

key - the backup name

serializeBackupList

private void serializeBackupList()

This method takes the mBackupList and saves it to the disc as separate serialized instances of BackupInstance.

deserializeBackupList

private void deserializeBackupList()

This method attempts to load all backups that were previously saved to disc.