Re: [Proxool-developer] Connection Equality

[Christian N. <chr...@em...>]

----- Original Message -----
From: Craig Servin <cs...@cr...>
Date: Tue, 18 May 2004 22:50:06 -0500
To: pro...@li...
Subject: Re: [Proxool-developer] Connection Equality

> On Tuesday 18 May 2004 15:56, Bill Horsman wrote:
> > However, I wonder whether it will cause problems with some systems.
> > Christian, some of your/my code relies on being able to identify the
> > same connection being used in a Map doesn't it? Any thoughts?
> 
> It is a little bit strange to have equals() guarantee that it is the same 
> connection.  I usually count on equals() to tell me something about logical 
> equality and == to see if something is really the same object.

Your points are valid, but in pratice this will create problems for external code that wants to reuse resources tied to a connection. For example:

We use a lot of clobs. Instead of creating a new clob each time we call our procedures (up to 40 times a second) we tie a clob to a connection and reuse the same clob each time. This is done by simply using the connection as the key in a thread safe hash map.

So, for this reason I suggest that the wrapper uses the identity of the underlying connection.

CHR

CHR
-- 
___________________________________________________________
Sign-up for Ads Free at Mail.com
http://promo.mail.com/adsfreejump.htm