Thread: PDO and PostgreSQL's LISTEN/NOTIFY

Is anyone aware of any effort currently underway to add support for
PostgreSQL's LISTEN/NOTIFY (async notification) feature to PDO?

At present the notification mechanism:

  http://www.postgresql.org/docs/8.1/interactive/libpq-notify.html

is only available within PHP whilst using the old-style API:

  http://www.php.net/manual/en/function.pg-get-notify.php

Unfortunately this means that applications ordinarily using PDO have to
include a mixture of old/new APIs (and separate connections/sessions) if they
want to receive notification messages.  I was thinking of putting some time
into proposing an addition to the PDO_PGSQL driver:

  http://www.php.net/manual/en/ref.pdo-pgsql.php

but didn't want to duplicate effort if someone has already written the code to
handle this feature.

Thanks..

On Tuesday 03 October 2006 21:25, David J N Begley wrote:
> Is anyone aware of any effort currently underway to add support for
> PostgreSQL's LISTEN/NOTIFY (async notification) feature to PDO?
>
> At present the notification mechanism:
>
>   http://www.postgresql.org/docs/8.1/interactive/libpq-notify.html
>
> is only available within PHP whilst using the old-style API:
>
>   http://www.php.net/manual/en/function.pg-get-notify.php
>
> Unfortunately this means that applications ordinarily using PDO have to
> include a mixture of old/new APIs (and separate connections/sessions) if
> they want to receive notification messages.  I was thinking of putting some
> time into proposing an addition to the PDO_PGSQL driver:
>
>   http://www.php.net/manual/en/ref.pdo-pgsql.php
>
> but didn't want to duplicate effort if someone has already written the code
> to handle this feature.
>

I talked to Wez about this and he generally didn't know what listen/notify was
so he was pretty sure no one had gotten to the point of sending in a PDO
patch his way.  He's certainly up for looking at a patch but had concern that
this might be something with too much of a postgresql specific tone, and
recommending investigating something like microsofts service broker
functionality to see if some common ground could be found.  HTH.

--
Robert Treat
Build A Brighter LAMP :: Linux Apache {middleware} PostgreSQL