[Mailman-Developers] SQL MemberAdaptor implementation?
Dale Newfield
Dale@Newfield.org
Fri, 23 Aug 2002 17:03:01 -0400 (EDT)
On Tue, 20 Aug 2002, Barry A. Warsaw wrote:
> The bit about "member keys" and lce's may be inaccurate. I think in
> general the assumption is that an lce is the key to the member's
> information, and I doubt you can use something more opaque. But you
> could try it and we could fix breakages.
I will try to make that opacity work. A question, though, is what
conceptually that key should represent. Does it represent a user, or a
user's subscription (which is a one-to-many relationship)?
> The tricky part, and the part I'm less confident about, is that you need
> to coordinate transaction boundaries through MailList.Load() and
> MailList.Save(). Save() is essentially "commit", but we never Save() if
> there's nothing to do, or if we don't have the list lock.
Hrm. So you're suggesting that all modifications made through the
writable interface be queued up in a transaction that isn't committed
until .Save()?
But then this could happen:
Q: What is Bob's subscription style to XYZ.?
A: normal
Change him to digest mode.
Q: What is Bob's subscription style to XYZ.?
A: normal
Basically it seems that the "don't commit until .Save()" and the "all
state changes happen immediately" contradict one another...
-Dale