Dieter,
Dieter Maurer writes: > Roy Mathew wrote at 2006-7-11 17:36 -0700: > >I have what seems to be an odd problem with persistence of information > >in simultaneous sessions. > > > >I keep track of an iterator in an object that is persistent (one > >instance per-session). The iterator is updated as the user navigates a > >sequence of objects. The iteration seems to work fine for a single user. > > > >If 2 users A and B access the system simultaneously, each users > >navigation is occasionally thrown off (ie: the session seems to lose > >track of the iterator state). > > Iterators can get seriously confused then the object iterated over > changes. > Thanks for your reply. Not sure really that the object itself is changing in my case - I keep a list of names (ordered) of elements belonging to a folder, and my iterator simply holds the "current" name. I do modify the object pointed to, in each iteration, but I assume that the elements of a BTreeContainer remain ordered (by name). Besides iteration/modification works for a single user. I was wondering if anyone could suggest techniques for debugging this sort of problem. In any case, after reading thru the docs, I see strong recommendations about not using the session to store rapidly changing values, so I am going to switch to using cookies instead - maybe that will fix the issue, though I would have really liked to understand what was happening in the first place. Roy. _______________________________________________ Zope3-dev mailing list Zope3-dev@zope.org Unsub: http://mail.zope.org/mailman/options/zope3-dev/archive%40mail-archive.com
