Re: Ecpg and reentrancy

From: Michael Meskes <meskes(at)postgresql(dot)org>
To: Dann Corbit <DCorbit(at)connx(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Ecpg and reentrancy
Date: 2002-02-05 14:33:04
Message-ID: 20020205143304.GA25573@credativ.de
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On Mon, Feb 04, 2002 at 04:51:38PM -0800, Dann Corbit wrote:
> Because the Ecpg project uses a global sqlca, it can be accessed by only
> one thread at a time.

That's correct.

> If (instead) we had a user supplied sqlca, it could be used by multiple
> threads.

How do you want to supply it?

> Why not have the user allocate the sqlca or pass it in as a parameter
> (maybe they want an auto sqlca).

That's not exactly the way other RDBMS handle it. Thus compatibility might
become a problem.

> In any case: a single, global sqlca is a very bad thing. (IMO-YMMV).

Okay, let's talk about a better way.

> Question:
> Why no sqlda structure? Every other embedded SQL I have used has the
> sqlda {and it is darn useful}.

Noone volunteered to implement it. :-)

Michael
--
Michael Meskes
Michael(at)Fam-Meskes(dot)De
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