Interface PersistenceManager

All Known Implementing Classes:

DBPersistenceManager, FilePersistenceManager

public interface PersistenceManager

Method Summary

Modifier and Type	Method	Description
void	clear()	Clears the complete NV state from the DB
Serializable	remove(Serializable key)	Remove existing NV from being persisted
Map	retrieveAll()	Gives back the Map in last known state
void	save(Serializable key, Serializable val)	Save new NV pair as serializable objects or if already exist; store new state
void	saveAll(Map map)	Use to store a complete map into persistent state
void	shutDown()	Used to handle shutdown call the PersistenceManager implementation.

Method Details

save

void save(Serializable key,
 Serializable val)
   throws CannotPersistException

Save new NV pair as serializable objects or if already exist; store new state

Parameters:

key -

val -

Throws:

CannotPersistException

remove

Serializable remove(Serializable key)
             throws CannotRemoveException

Remove existing NV from being persisted

Parameters:

key - value

Returns:

Serializable; gives back the value

Throws:

CannotRemoveException

saveAll

void saveAll(Map map)
      throws CannotPersistException

Use to store a complete map into persistent state

Parameters:

map -

Throws:

CannotPersistException

retrieveAll

Map retrieveAll()
         throws CannotRetrieveException

Gives back the Map in last known state

Returns:

Map;

Throws:

CannotRetrieveException

clear

void clear()
    throws CannotRemoveException

Clears the complete NV state from the DB

Throws:

CannotRemoveException

shutDown

void shutDown()

Used to handle shutdown call the PersistenceManager implementation. Persistent engines can leave this implementation empty.