Commit 5fbc3529 authored by Jeremy Hylton's avatar Jeremy Hylton

Split assert into two parts, checking for None in second part.

The comment indicated that end could be None, and I've fleshed out the
comment with more detail.
parent cc354e16
......@@ -13,14 +13,14 @@
##############################################################################
"""Database connection support
$Id: Connection.py,v 1.106 2003/12/27 13:54:04 sidnei Exp $"""
$Id: Connection.py,v 1.107 2003/12/31 16:27:29 jeremy Exp $"""
import logging
import sys
import threading
from time import time
from types import ClassType
from utils import U64
from utils import u64
_marker = object()
......@@ -518,10 +518,13 @@ class Connection(ExportImport, object):
# txn_time. It must be current at txn_time, but could have
# been modified at txn_time.
# It's possible that end is None, if, e.g., the most recent
# invalidation was for version data.
assert start < self._txn_time <= end, \
(U64(start), U64(self._txn_time), U64(end))
# It's possible that end is None. The _txn_time is set by an
# invalidation for one specific object, but it used for the
# load time for all objects. If an object hasn't been
# modified since _txn_time, it's end tid will be None.
assert start < self._txn_time, (u64(start), u64(self._txn_time))
assert end is None or self._txn_time <= end, \
(u64(self._txn_time), u64(end))
self._noncurrent[obj._p_oid] = True
self._reader.setGhostState(obj, data)
obj._p_serial = start
......
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