class documentation

class Versioned: (source)

Known subclasses: twisted.web.distrib.ResourcePublisher, twisted.words.im.basesupport.AbstractAccount

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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 __getstate__ Get state, adding a version number to it on its way out.
Method __setstate__ Undocumented
Method versionUpgrade (internal) Do a version upgrade.
Class Variable persistenceForgets Undocumented
Class Variable persistenceVersion Undocumented
Instance Variable __dict__ Undocumented
def __getstate__(self, dict=None): (source)
Get state, adding a version number to it on its way out.
def __setstate__(self, state): (source)

Undocumented

def versionUpgrade(self): (source)
(internal) Do a version upgrade.
persistenceForgets: tuple = (source)

Undocumented

persistenceVersion: int = (source)

Undocumented

__dict__ = (source)

Undocumented