On Thu, Mar 22, 2012 at 04:13:34PM -0400, Claudiu Saftoiu wrote: > On Thu, Mar 22, 2012 at 2:45 PM, Vincent Pelletier > <plr.vinc...@gmail.com>wrote: > > > Le jeudi 22 mars 2012 18:23:47, Claudiu Saftoiu a écrit : > > > Ahh, now that looks promising. Are there any particularly good places to > > > get documentation on that sort of thing? All I see when I google are > > > mailing list archives. > > > > See ZODB/ConflictResolution.txt . Disclaimer: I didn't read it. I read the > > code - but I expect the text file to be easier to assimilate :) . > > BTrees/Length.py:Length class implements a simple _p_resolveConflict (yours > > will be even simpler). > > Thanks, I will take a look. > > > There should be some details in the exceptoin itself. Like, oids, currently > > commited TID and the TID transaction started with. root()._p_jar[the_oid] > > will > > get you the object. Then the hard part starts: guess where in the object > > tree > > that object is. If you have varied classes, and significant data on your > > persistent instances, it will be easy. > > > > Ok, I just got a ConflictError: > > ConflictError: database conflict error (oid 0x139c35, class > BTrees.OOBTree.OOBucket, serial this txn started with 0x03954ed053c0ff88 > 2012-03-22 16:48:19.629820, serial currently committed 0x03954f996d61c944 > 2012-03-22 20:09:25.636401) > > in my paster shell I do: > > In [14]: root._p_jar[0x139c35]
OIDs are 64-bit numbers internally encoded as 8-byte-long binary strings.
Use
>>> !from ZODB.utils import p64
>>> p root._p_jar.get(p64(0x139c35))
or http://pypi.python.org/pypi/zodbbrowser
>
> However, this causes:
>
> In [14]: root._p_jar[0x139c35]
> ERROR: An unexpected error occurred while tokenizing input
> The following traceback may be corrupted or invalid
> The error message is: ('EOF in multi-line statement', (85, 0))
Where did the EOF come from?
(This is why I don't trust ipython.)
>
> ---------------------------------------------------------------------------
> TypeError Traceback (most recent call last)
>
> /home/tsa/sports/<ipython console> in <module>()
>
> /home/tsa/env/lib/python2.6/site-packages/ZODB/Connection.pyc in get(self,
> oid)
> 246 return obj
> 247
> --> 248 p, serial = self._storage.load(oid, '')
> 249 obj = self._reader.getGhost(p)
> 250
>
> /home/tsa/env/lib/python2.6/site-packages/ZEO/ClientStorage.pyc in
> load(self, oid, version)
> 813 self._lock.acquire() # for atomic processing of
> invalidations
> 814 try:
> --> 815 t = self._cache.load(oid)
> 816 if t:
> 817 return t
>
> /home/tsa/env/lib/python2.6/site-packages/ZEO/cache.pyc in call(*args, **kw)
> 141 inst._lock.acquire()
> 142 try:
> --> 143 return self.func(inst, *args, **kw)
> 144 finally:
> 145 inst._lock.release()
>
> /home/tsa/env/lib/python2.6/site-packages/ZEO/cache.pyc in load(self, oid)
> 487 @locked
> 488 def load(self, oid):
> --> 489 ofs = self.current.get(oid)
> 490 if ofs is None:
> 491 self._trace(0x20, oid)
>
> /home/tsa/env/lib/python2.6/site-packages/ZODB/fsIndex.pyc in get(self,
> key, default)
> 123
> 124 def get(self, key, default=None):
> --> 125 tree = self._data.get(key[:6], default)
> 126 if tree is default:
> 127 return default
>
> TypeError: 'int' object is unsubscriptable
This makes more sense than the EOF error above.
Marius Gedminas
--
I am monolingual and English is the ling I mono.
-- James Nicoll
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