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Re: NOTIFY in asynchronous mode

From: Tobias Oberstein <tobias(dot)oberstein(at)tavendo(dot)de>
To: Jan Urbański <wulczer(at)wulczer(dot)org>
Cc: Daniele Varrazzo <daniele(dot)varrazzo(at)gmail(dot)com>, "psycopg(at)postgresql(dot)org"<psycopg(at)postgresql(dot)org>
Subject: Re: NOTIFY in asynchronous mode
Date: 2011-11-05 12:37:39
Message-ID: (view raw, whole thread or download thread mbox)
Lists: psycopg
> I think that's a reasonably simple API and one that allows you to do anything
> you want without introducing some extra interfaces that notify observers
> have to implement, just requiring that they are callable.

Yeah, thats fine. So

+ all observers registered on a connection would get notified when a notification
on that connection arrives.

+ a dispatching scheme based on channel can be built on top of above

+ the LISTEN/UNLISTEN is orthogonal to observer registration

+ any callable which takes a first positional argument of type "notify" can be used

+ the whole interface for above is Connection.addNotifyObserver/removeNotifyObserver

, right?

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