On 26 Jun 2006, at 21:11, Robert Gravina wrote:
On 2006/06/27, at 3:49, Benji York wrote:
Robert Gravina wrote:
I just tried loading a persisted object interactively and
noticed that although the _p_oid doesn't print out as anything
(and hence I always thought it was empty in my debugging
prints), it isn't actually None! Can anyone explain this? (here
"p" is my persisted object)
>>> p._p_oid
'\x00\x00\x00\x00\x00\x00\x00\x08'
>>> print p._p_oid
>>> p._p_oid is None
False
What would you expect to see if you printed out seven null
characters and a backspace?
Hahaha - that's a good point! I was expecting IDs to look, well,
something like "asdf23asdf". Well, anyway thankyou! I seemed to
have solved this problem. I was able to write a __eq__ function
like this:
def __eq__(self, other):
if isinstance(other, <name of my class>):
if hasattr(other,"_p_oid") and other._p_oid != None and
(other._p_oid == self._p_oid):
return True
else:
return False
and now can compare objects for equality after the (Twisted) client
edits them and sends them back.
You can shorten that to
def __eq__(self, other):
return aq_base(self) is aq_base(other)
And you can ditch the aq_base if you don't use acquisition-based
classes.
Florent
--
Florent Guillaume, Nuxeo (Paris, France) Director of R&D
+33 1 40 33 71 59 http://nuxeo.com [EMAIL PROTECTED]
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