On 12/2/05, Lennart Regebro <[EMAIL PROTECTED]> wrote:
> On 12/1/05, Chris Withers <[EMAIL PROTECTED]> wrote:
> > Ah, okay, so having DateTime sublcass Persistent would only really
> > matter if a had _lots_ of DateTime attributes. Does this ever happen?
>
> Well, in a calendar each event has at le
On 12/1/05, Chris Withers <[EMAIL PROTECTED]> wrote:
> Ah, okay, so having DateTime sublcass Persistent would only really
> matter if a had _lots_ of DateTime attributes. Does this ever happen?
Well, in a calendar each event has at least one. And you can have
quite many events. But on the other ha
[Gary Poster, on pickle "extension codes"]
> Yes, I remembered this, and just refreshed my memory. This is the last
> mention I see in the archives as to ZODB use of protocol 2 (i.e., it
> doesn't, and prior to Py 2.3.4 it couldn't).
>
> http://mail.zope.org/pipermail/zodb-dev/2004-December/008259
...
>>> ...have we just committed a pickle containing all of 'a'?...
>> If `a` is persistent, yes.
> If not?
Then get_transaction().commit() presumably doesn't do much of anything,
since no persistent object was changed. It's like asking what this does:
i = 2+3
get_transaction().commi
On Dec 1, 2005, at 12:04 PM, Tim Peters wrote:
Note that we have yet to use a new strategy for shrinking pickle
sizes: a
few years ago Python's pickle code grew support for "extension
codes", a
registry of class/type names that _can_ be referenced by short (as
short as
2 bytes) new pickle
On 12/1/05, Tim Peters <[EMAIL PROTECTED]> wrote:
> [Jürgen Herrmann]
> > the question was wether DateTime instances (of the new implementation,
> > which is yet to be coded) should mixin Persistent.
>
> OK. Since ZODB doesn't care whether you do
Well, I think that was the question. Does ZODB car
Tim Peters wrote:
There is only one commit in the following, so I'll assume you intended a
second commit at the end:
yes, *sigh*, must engage brain...
a.someTime = DateTime()
get_transaction().commit()
Is `a` persistent? I'm assuming that it is.
Yes.
...wait/do stuff...
a.someTime = Da
[Gary Poster]
> For some definition of "a lot of thought". :-) The pickle for pytz.utc
> is now relatively small (though still adds a non-trivial percentage
> addition--30%ish?--to a naive datetime IIRC). That's as far as that bit
> goes.
A naïve datetime has an extraordinarily small state, tho
[Chris Withers]
> Sorry, my question was that if DateTime's were persistent, would the
> following code result in a complete pickle for 'a' being written on the
> second transaction commit?
There is only one commit in the following, so I'll assume you intended a
second commit at the end:
> a.some
On Dec 1, 2005, at 11:39 AM, Chris Withers wrote:
Sorry, my question was that if DateTime's were persistent, would
the following code result in a complete pickle for 'a' being
written on the second transaction commit?
a.someTime = DateTime()
get_transaction().commit()
wait/do stuff...
On Dec 1, 2005, at 11:38 AM, Tim Peters wrote:
... I know Gary Poster gave a lot of thought to making pickles for
the timezone info in Zope3 efficient too.
For some definition of "a lot of thought". :-) The pickle for
pytz.utc is now relatively small (though still adds a non-trivial
perc
Tim Peters wrote:
Sorry, I couldn't find a comprehensible question here after reasonable
effort to extract one. Clearly, Zope2's DateTime.DateTime.DateTime objects
are neither persistent nor do they define any mutating methods. Are those
relevant? If not, try to ask a question directly, withou
[Jürgen Herrmann]
> the question was wether DateTime instances (of the new implementation,
> which is yet to be coded) should mixin Persistent.
OK. Since ZODB doesn't care whether you do, is there confusion about what
ZODB may or may not do in either case? That is, what's the ZODB issue here?
H
al Message-
> From: Chris Withers <[EMAIL PROTECTED]>
> Sent: Wednesday, November 30, 2005 2:03 PM
> To: Lennart Regebro
> Cc: zodb-dev@zope.org
> Subject: [ZODB-Dev] Re: [Zope] DateTime mess
>
> Lennart Regebro wrote:
>> On 11/29/05, Chris Withers <[EMAIL PROTE
g everyone
has read the other 55 messages in the zope-dev thread ;-)
-Original Message-
From: Chris Withers <[EMAIL PROTECTED]>
Sent: Wednesday, November 30, 2005 2:03 PM
To: Lennart Regebro
Cc: zodb-dev@zope.org
Subject: [ZODB-Dev] Re: [Zope] DateTime mess
Lennart Regebro wrot
Lennart Regebro wrote:
On 11/29/05, Chris Withers <[EMAIL PROTECTED]> wrote:
Hmm... how so? I've always thought it quite nice that when, for example,
you store the modification time of an object in a DateTime, you can
safely update it without worrying about the whole object having to be
repickl
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