Re: Postgresql to Delphi - Mailing list pgsql-general

Listen/notify implies a dynamic table that is constantly on the change. Am I
correct?

The table I am talking about is completed through one interface then
imported as a relatively static information base for the application in
which I am seeking help.

Bob


----- Original Message -----
From: "Tony Caduto" <tony_caduto@amsoftwaredesign.com>
To: "Bob Pawley" <rjpawley@shaw.ca>; <pgsql-general@postgresql.org>
Sent: Tuesday, March 20, 2007 2:16 PM
Subject: Re: [GENERAL] Postgresql to Delphi


> Bob Pawley wrote:
>> Hi
>>  I have posed this question to the Delphi list but they don't appear to
>> be able to help.
>>  I am attempting to have the information in a PostgreSQL database table
>> trigger a function in Delphi.
>>  At present the delphi application is triggered by a mouseup on a TImage
>> file, residing in a notebook,  through an alias
>> (DeviceNotebookMouseUpAlias). I want to have the Postgres use this alias
>> to trigger the function.
>>  Could someone point me to any literature that would help me with this
>> project?
>>  Bob Pawley
> I would have replied to the Delphi List if I had seen it :-)
>
> The best way would be to use the listen/notify that PostgreSQL provides,
> but only a couple of the Delphi libraries support
> notifications from PostgreSQL, zeoslib does not work at all, nor will the
> PGSQL driver that shipped with Kylix.
> PostgresDAC from Microolap (http://www.microolap.com) will work with
> notifications and they have pretty decent support.
> If you prefer Dbexpress you could try the driver from www.vitavoom.com
> which has support for notifications, but it is a bit pricey compared to
> the  Microolap product.  There is also a library for libpq.dll out there
> if you want to code really low level.
>
> And for those out there who don't know what Delphi is, check out
> http://www.codegear.com
> It's basically  Visual Object Pascal and works very similar to VB version
> 6, except it has full support for inheritance etc and can program down to
> the bare metal using inline Assembler if you really need to do that :-) It
> also has full support for pointers etc so you can pretty much get the
> performance of C or C++ all in the same package.  Using Delphi for
> database applications is like being in Paradise all the time :-)
>
>
> Later,
>
> --
> Tony Caduto
> AM Software Design
> http://www.amsoftwaredesign.com
> Home of PG Lightning Admin for Postgresql
> Built with CodeGear Delphi 2007
> Your best bet for Postgresql Administration
>