At 14:28 2002-08-29 -0700, [EMAIL PROTECTED] said:
>I am trying to implement a proxy class (specifically for the purposes of
>multi-versioned document objects (folderish proxies that contain the object
Hi Sean,
We've been "stealing" some code from CMFCore.Skinnable to
do similar things (multi-language objects):
Skinnable gets the skins when the objects is being wrapped (e.g.
in the objects __of__ method) and overrides __getattr__ which
uses the skins or falls back to an unbound superGetAttr method
that points to the inherited __getattr__.
(The superGetAttr have pussled us because it seams like superGetAttr is None,
but everything still work as expected.)
We replace the skin with a VeryTinyDataWrapper which (of course) implements
Acquisition.Implicit.
Would this work better that the way your doing it?
We currently implementing this so I don't know for sure that it
is faster, but it's from CMF (a key part to) so it shouldn't be to slow or?
def setupCurrentLanguageData(self):
#the request part is a rest from Skinnable, I don't think it can
be removed.
request=self.request
#replace this with anything that returns
lang_code=self.EasyLanguageService.getCurrentLanguage()
ob = self._current_language.get(lang_code, VerySmallData())
self._v_c_language = (request, ob, {})
def __getattr__(self, name, marker=None):
# OK, see if we can find the language service:
if not name.startswith('_') and not name.startswith('aq_'):
cl = self._v_c_language
if cl is not None:
request, ob, ignore = cl
if not ignore.has_key(name):
subob = getattr(ob, name, _marker)
if subob is not _marker:
# Return it in context of self, forgetting
# its location and acting as if it were located
# in self.
return aq_base(subob)
else:
ignore[name] = 1
if superGetAttr is None:
raise AttributeError, name
return superGetAttr(self, name)
def __of__(self, parent):
'''
Sneakily sets up the current language then returns the wrapper
that Acquisition.Implicit.__of__() would return.
'''
w_self = ImplicitAcquisitionWrapper(aq_base(self), parent)
try:
w_self.setupCurrentLanguageData()
except:
# This shouldn't happen, even if the requested current language
# does not exist.
import sys
from zLOG import LOG, ERROR
LOG('CMFCore', ERROR, 'Unable to setupCurrentLanguageData()',
error=sys.exc_info())
return w_self
Regards,
Johan Carlsson
--
Torped Strategi och Kommunikation AB
Johan Carlsson
[EMAIL PROTECTED]
Mail:
Birkagatan 9
SE-113 36 Stockholm
Sweden
Visit:
Västmannagatan 67, Stockholm, Sweden
Phone +46-(0)8-32 31 23
Fax +46-(0)8-32 31 83
Mobil +46-(0)70-558 25 24
http://www.torped.se
http://www.easypublisher.com
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