delta/python-packages/sqlalchemy.git/lib/sqlalchemy/event, branch pr/36

- add support for removal of instance methods as event listeners, taking

2013-10-01T16:14:34+00:00

into account the id() of the function itself and self, [ticket:2832]

- apply an import refactoring to the ORM as well

2013-08-14T23:58:34+00:00

- rework the event system so that event modules load after their
targets, dependencies are reversed
- create an improved strategy lookup system for the ORM
- rework the ORM to have very few import cycles
- move out "importlater" to just util.dependency
- other tricks to cross-populate modules in as clear a way as possible

fix missing comma

2013-07-31T23:07:13+00:00

- this collection can be None on cleanup, so check for that

2013-07-27T22:41:34+00:00

- add event.contains() function to the event package, returns True

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if the given target/event/fn is set up to listen.
- repair mutable package which is doing some conditional event listening

- Removal of event listeners is now implemented. The feature is

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provided via the :func:`.event.remove` function.
[ticket:2268]
- reorganization of event.py module into a package; with the addition of the
docstring work as well as the new registry for removal, there's a lot more code now.
the package separates concerns and provides a top-level doc for each subsection
of functionality
- the remove feature works by providing the EventKey object which associates
the user-provided arguments to listen() with a global, weak-referencing registry.
This registry stores a collection of _ListenerCollection and _DispatchDescriptor
objects associated with each set of arguments, as well as the wrapped function
which was applied to that collection.  The EventKey can then be recreated for
a removal, all the _ListenerCollection and _DispatchDescriptor objects are located,
and the correct wrapped function is removed from each one.