Message-ID: <45087BA7.2050908@logix-tt.com>
Date: Wed, 13 Sep 2006 23:44:07 +0200
From: Markus Schaber <schabi@logix-tt.com>
Reply-To: PostgreSQL SQL List <pgsql-sql@postgresql.org>
Organization: Logical Tracking and Tracing International AG, Switzerland
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To: PostgreSQL SQL List <pgsql-sql@postgresql.org>
Subject: Re: Aggregates with internal state type?
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Hi, Tom,

Tom Lane wrote:

>> Ah, I see. So there's no possibility to pass some void* kind of
>> intermediate data, I have to craft at least a dummy PostgreSQL datatype
>> for it.
> 
> Right.  My first thought would be to use bytea as the declared type ---
> doesn't put much burden on you except to have a length word at the front.

Yes, that will work for C, and I'll have a look into it. Good idea.

I had the secret hope that I'd come up with a scheme that also works
using pljava, avoiding the serialization and reserialization of java
objects. But I'm afraid that this gets more difficult.

Markus
-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

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