[Florent Guillaume]
I know this has been raised several times in the past, but I'm not sure
of all the details...
You should believe whatever Jim tells you ;-)
What layer of ZODB, if any, has a restriction that OIDs be 8-byte
strings. Is it the persistence module? Or just FileStorage?
Tim Peters wrote:
[Florent Guillaume]
I know this has been raised several times in the past, but I'm not sure
of all the details...
You should believe whatever Jim tells you ;-)
Hey, what's the wink for?
What layer of ZODB, if any, has a restriction that OIDs be 8-byte
strings. Is it
...
[Tim]
You should believe whatever Jim tells you ;-)
[Jim]
Hey, what's the wink for?
I was just flirting with Florent ;-)
...
I thought this was settled in:
http://mail.zope.org/pipermail/zodb-dev/2005-March/008593.html
which also mentions the requirement that oids must have len
[Florent Guillaume]
Oh I agree, but if my storage (think SQL) has internally other kinds of
identifiers, like autoincremented integer primary keys, and several
tables depending on object kind, I want to reuse its concepts and pack
them into an oid like 'footable_12345'.
I probably would not.
Tim Peters wrote:
Some auxiliary code would definitely break if they weren't strings. For
example, ZEO cache tracing has its own trace-file format, which originally
blew up left and right when Shane tried to use it with APE. That got
generalized (and, alas, the trace files got bigger) to live
Tim Peters wrote at 2005-12-9 10:46 -0500:
...
I'm not sure where the
code actually relies on stringness
The cPickleCache explicitely checks for stringness.
Not, that this were necessary. It just does.
--
Dieter
___
For more information about ZODB,
[Shane Hathaway]
FWIW: Ape still uses variable length strings.
That's OK!
The OIDs shrank in size because they used to contain the object's
physical path, but that turned out to play bad tricks with copy/paste,
A cautionary tale about getting too fancy with oids ;-)
so now OIDs are usually
Tim Peters wrote:
[Shane Hathaway]
It can do this because it has to provide its own DB and Connection
objects anyway.
I trust that's for more reasons than _just_ because it doesn't want to use
'\0'*8 as the root-object oid.
It's for uniformity. In Ape, the strategy for choosing OIDs is
