db-torque-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Quinton McCombs" <qmcco...@nequalsone.com>
Subject RE: [RFC] Changing retrieveByPK
Date Thu, 23 Jan 2003 15:00:12 GMT
I would suggest subclassing TorqueException.  Perhaps TooManyRows and
NoRows could subclass TorqueException.  The superclass would only be
thrown for general exceptions.

This would prevent any existing code from breaking....

> -----Original Message-----
> From: Henning P. Schmiedehausen [mailto:hps@intermeta.de] 
> Sent: Thursday, January 23, 2003 6:57 AM
> To: turbine-torque-dev@jakarta.apache.org
> Subject: [RFC] Changing retrieveByPK
> 
> 
> Hi,
> 
> I have the following problem:
> 
> In Peer.vm there is the following code:
> 
> --- cut ---
>         List v = doSelect(criteria, con);
>         if (v.size() != 1)
>         {
>             throw new TorqueException("Failed to select one 
> and only one row.");
>         }
>         else
>         {
>             return ($table.JavaName)v.get(0);
>         }
> --- cut ---
> 
> I'd like to distinguish between "no such object found" and 
> "an error occured".
> 
> How about changing this to 
> 
> --- cut ---
>         List v = doSelect(criteria, con);
>         switch (v.size())
>         {
>             case 0:
>                 throw ... some other exception
> 
>             case 1:
>                 break;
> 
>             default:
>                 throw new TorqueException("Failed to select 
> one and only one row.");
>         }
>         return ($table.JavaName)v.get(0);
> --- cut ---
> 
> to make this possible.
> 
> 	Regards
> 		Henning
> 
> -- 
> Dipl.-Inf. (Univ.) Henning P. Schmiedehausen       -- 
> Geschaeftsfuehrer
> INTERMETA - Gesellschaft fuer Mehrwertdienste mbH     hps@intermeta.de
> 
> Am Schwabachgrund 22  Fon.: 09131 / 50654-0   info@intermeta.de
> D-91054 Buckenhof     Fax.: 09131 / 50654-20   
> 
> --
> To unsubscribe, e-mail:   
> <mailto:turbine-torque-dev-> unsubscribe@jakarta.apache.org>
> 
> For additional commands, 
> e-mail: <mailto:turbine-torque-dev-help@jakarta.apache.org>
> 
> 

Mime
View raw message