James Y Knight wrote:
On Aug 31, 2005, at 8:31 AM, Matt Goodall wrote:
In response to the announcement of the Twisted Asynchronous Database Api (tada), <http://www.darkarts.co.za/projects/tada/, I thought I should mention something I wrote.
A while back, I started messing around with making a standard, blocking db-api module appear non-blocking but with a deferred API. I called it laxdb and it's in my sandbox.
I think it'd be nice to get something like one of these into twisted to supplement/replace adbapi, but it'd probably be best to make sure that the wrapper for blocking databases and pgasync can use the same interface first.
Well ... I did do that at first but pgasync isn't quite dbapi compatible and it also has a couple of oddities that I'm not sure about.
My memory is a bit fuzzy about all this now but the main thing is that pgasync queues queries.
There's basically a chain of deferreds internal to a pgasync connection. In some ways, it makes pgasync easier to use, because it looks like stuff is not deferred, but I actually found it irritating after a while. Personally, I think if something is async it might as well look async.
There are also a number of bugs (in my opinion) which mean pgasync is not dbapi compatible but those can probably be fixed over time.
Anyway, I agree that this would be good but there are a couple of API issues that need solving first before it's possible.
Note: I don't think laxdb is an adbapi replacement. adbapi has its advantages but at the cost of losing a bit of control over how and when database operations happen. They're probably just different.
- Matt