twisted.python.components : API documentation

Component architecture for Twisted, based on Zope3 components.

Using the Zope3 API directly is strongly recommended. Everything you need is in the top-level of the zope.interface package, e.g.:

  from zope.interface import Interface, implements

  class IFoo(Interface):
      pass

  class Foo:
      implements(IFoo)

  print IFoo.implementedBy(Foo) # True
  print IFoo.providedBy(Foo()) # True

twisted.python.components.registerAdapter from this module may be used to add to Twisted's global adapter registry.

twisted.python.components.proxyForInterface is a factory for classes which allow access to only the parts of another class defined by a specified interface.

Function	registerAdapter	Register an adapter class.
Function	getAdapterFactory	Return registered adapter for a given class and interface.
Function	getRegistry	Returns the Twisted global `zope.interface.adapter.AdapterRegistry` instance.
Class	Adapter	I am the default implementation of an Adapter for some interface.
Class	Componentized	I am a mixin to allow you to be adapted in various ways persistently.
Class	ReprableComponentized	Undocumented
Function	proxyForInterface	Create a class which proxies all method calls which adhere to an interface to another provider of that interface.
Function	_registered 0	Return the adapter factory for the given parameters in the given registry, or None if there is not one.
Function	_registered	Return the adapter factory for the given parameters in the given registry, or None if there is not one.
Function	_addHook	Add an adapter hook which will attempt to look up adapters in the given registry.
Function	_removeHook	Remove a previously added adapter hook.
Class	_ProxiedClassMethod	A proxied class method.
Class	_ProxyDescriptor	A descriptor which will proxy attribute access, mutation, and deletion to the `original` attribute of the object it is being accessed from.

def registerAdapter(adapterFactory, origInterface, *interfaceClasses): (source)

An adapter class is expected to implement the given interface, by adapting instances implementing 'origInterface'. An adapter class's __init__ method should accept one parameter, an instance implementing 'origInterface'.

def getAdapterFactory(fromInterface, toInterface, default): (source)

Return registered adapter for a given class and interface.

Note that is tied to the *Twisted* global registry, and will thus not find adapters registered elsewhere.

def _addHook(registry): (source)

Add an adapter hook which will attempt to look up adapters in the given registry.

Returns The hook which was added, for later use with _removeHook.

def _removeHook(hook): (source)

Remove a previously added adapter hook.

Parameters hook An object previously returned by a call to _addHook. This will be removed from the list of adapter hooks.

def proxyForInterface(iface, originalAttribute='original'): (source)

Create a class which proxies all method calls which adhere to an interface to another provider of that interface.

This function is intended for creating specialized proxies. The typical way to use it is by subclassing the result:

 class MySpecializedProxy(proxyForInterface(IFoo)):
     def someInterfaceMethod(self, arg):
         if arg == 3:
             return 3
         return self.original.someInterfaceMethod(arg)

Parameters	iface	The Interface to which the resulting object will conform, and which the wrapped object must provide.
	originalAttribute	name of the attribute used to save the original object in the resulting class. Default to `original`. (type: `str`)
Returns	A class whose constructor takes the original object as its only argument. Constructing the class creates the proxy.

t.p.components : module documentation