Class Versioned
- Known Subclasses:
-
AbstractAccount,
AccountCreationWidget,
Application,
ApplicationService,
BrokerFactory,
Componentized,
File,
Group,
Participant,
ParticipantListWidget,
Registry,
Resolver,
ResourcePublisher,
Service,
WebWordsAdminSite,
WordsGadget
This type of object is persisted with versioning information.
I have a single class attribute, the int persistenceVersion. After I
am unserialized (and styles.doUpgrade() is called),
self.upgradeToVersionX() will be called for each version upgrade I must
undergo.
For example, if I serialize an instance of a Foo(Versioned) at version
4 and then unserialize it when the code is at version 9, the calls:
self.upgradeToVersion5()
self.upgradeToVersion6()
self.upgradeToVersion7()
self.upgradeToVersion8()
self.upgradeToVersion9()
will be made. If any of these methods are undefined, a warning message
will be printed.
| Method Summary |
| |
__getstate__(self,
dict)
Get state, adding a version number to it on its way out. |
| |
__setstate__(self,
state)
|
| |
versionUpgrade(self)
(internal) Do a version upgrade. |
__getstate__(self,
dict=None)
Get state, adding a version number to it on its way out.
-
|
versionUpgrade(self)
(internal) Do a version upgrade.
-
|
persistenceForgets
-
- Type:
-
tuple
- Value:
|
persistenceVersion
-
- Type:
-
int
- Value:
|