public class FilePersistenceManager extends java.lang.Object implements PersistenceManager
Constructor and Description |
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FilePersistenceManager(java.lang.String propertiesFilename)
Default constructor
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Modifier and Type | Method and Description |
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void |
clear()
Clears the complete NV state from the DB
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protected java.util.Map |
filterLoadedValues(java.util.Map in)
Turns the values into Floats to enable
DistributedHashtableDemo to work. |
java.io.Serializable |
remove(java.io.Serializable key)
Remove existing NV from being persisted
|
java.util.Map |
retrieveAll()
Gives back the Map in last known state
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void |
save(java.io.Serializable key,
java.io.Serializable val)
Save new NV pair as serializable objects or if already exist; store
new state
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void |
saveAll(java.util.Map map)
Use to store a complete map into persistent state
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void |
shutDown()
Used to handle shutdown call the PersistenceManager implementation.
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public FilePersistenceManager(java.lang.String propertiesFilename) throws java.lang.Exception
java.lang.Exception
public void save(java.io.Serializable key, java.io.Serializable val) throws CannotPersistException
save
in interface PersistenceManager
CannotPersistException
public java.io.Serializable remove(java.io.Serializable key) throws CannotRemoveException
remove
in interface PersistenceManager
key
- valueCannotRemoveException
public void saveAll(java.util.Map map) throws CannotPersistException
saveAll
in interface PersistenceManager
CannotPersistException;
CannotPersistException
public java.util.Map retrieveAll() throws CannotRetrieveException
retrieveAll
in interface PersistenceManager
CannotRetrieveException;
CannotRetrieveException
protected java.util.Map filterLoadedValues(java.util.Map in)
DistributedHashtableDemo
to work.
Subclasses should override this method to convert the incoming map
of string/string key/value pairs into the types they want.in
- public void clear() throws CannotRemoveException
clear
in interface PersistenceManager
CannotRemoveException;
- xCannotRemoveException
public void shutDown()
shutDown
in interface PersistenceManager
Copyright ? 1998-2008 Bela Ban. All Rights Reserved.