[ZODB-Dev] transacting multiple databases

[Shane Hathaway]

Jeremy Hylton wrote:
>>>>>>"SH" == Shane Hathaway <shane@zope.com> writes:
>>>>>
> 
>   SH> I think the next step is to decide whether the
>   SH> setLocalTransaction() code ought to be merged into mainline
>   SH> ZODB.  I'd be happy to do it with Jeremy's approval.  (Jeremy,
>   SH> are you reading?)
> 
> I'm reading, but I haven't had time to follow setLocalTransaction().
> What is the rationale?  Maybe we could do a mini-PEP?

The use case is that in an event-based system such as a GUI, you can 
have independent activities that all run in the same thread.  It's quite 
similar to cooperative multitasking.  However, ZODB.Connection makes 
assumptions that independent activities are bound to threads.  The patch 
would enable programmers to change this policy, binding connections 
directly to transactions.  The change is simple and noninvasive.

It wasn't my idea, though, so as for the PEP, I'll say "not it"! ;-)

Shane