Update of /cvsroot/gmailagent/GA-Qgcm
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv4925
Added Files:
BorgSingleton.py
Log Message:
added singleton class
--- NEW FILE: BorgSingleton.py ---
"""
Borg and more than one module, Jan Wender, 2001/10/11
If you want to use the Borg pattern from more than one module,
it works as follows: Extract the Borg Pattern into a module and a
class of its own: borg.py:
class Borg:
__shared_state = {} # or org.python.core.PyStringMap in jython
def __init__(self):
self.__dict__ = self.__shared_state
Let your class in a separate module inherit from Borg and call Borg's
initializer in your __init__:
import borg
class Test(borg.Borg):
def __init__(s):
borg.Borg.__init__(s)
Although sounding like a swedish chef, it works now.
The state is shared across all modules using the Test class.
"""
class Borg:
__shared_state = {}
def __init__(self):
self.__dict__ = self.__shared_state
# and whatever else you want in your class -- that's all!
|
