RE: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Tim Peters
[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

RE: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Tim Peters
... >>> ...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

Re: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Gary Poster
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

Re: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Lennart Regebro
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

Re: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Chris Withers
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

RE: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Tim Peters
[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

RE: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Tim Peters
[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

Re: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread David Binger
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...

Re: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Gary Poster
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

Re: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Chris Withers
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

RE: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Tim Peters
[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

RE: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Jürgen Herrmann
the question was wether DateTime instances (of the new implementation, which is yet to be coded) should mixin Persistent. regards, juergen herrmann [ Tim Peters wrote:] > Sorry, I couldn't find a comprehensible question here after reasonable > effort to extract one. Clearly, Zope2's DateTime.Dat

RE: [ZODB-Dev] Different weird errors with Zope 2.8.4

2005-12-01 Thread Tim Peters
[Chris Withers] > Yay! Where's the correct place to report these nowadays? Same as always: ZODB bugs should be reported on a Zope Collector, with topic Database. It's fine to discuss them on zodb-dev, but when (as appears to be the case with this one) nobody has an immediate answer or time to di

RE: [ZODB-Dev] Re: [Zope] DateTime mess

2005-12-01 Thread Tim Peters
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, without assuming everyone

Re: [ZODB-Dev] Different weird errors with Zope 2.8.4

2005-12-01 Thread Chris Withers
Yay! Where's the correct place to report these nowadays? cheers, Chris Dieter Maurer wrote: Chris Withers wrote at 2005-11-29 14:33 +: Hot on the heals of my posts about "Shouldn't load state for" comes the eagerly awaited sequel "Couldn't load state for" ;-) ... File "lib/python/ZEO/z