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From Clinton Begin <clinton.be...@gmail.com>
Subject Re: IBatis 3 Exceptions
Date Fri, 04 Dec 2009 18:58:02 GMT
I have done things like retry logic and/or switching to a different database
in a cluster -- but at all costs I try to do that at the driver level (with
a driver proxy class), rather than in the business logic.  But even if I did
it in the business logic, while I might catch the exception for the retry, I
would not distinguish the failure.

This is really rare though, and I can't remember the last time I did it.
Currently where I work they do the cluster failover logic in a driver proxy
as I mentioned.


On Fri, Dec 4, 2009 at 10:27 AM, Rick.Wellman <Rick.Wellman@kiewit.com>wrote:

>  Agreed on both points below… but am curious to the community at large…
> has anyone come up with something useful to do on a database exception other
> than apologize to the user?  This might be a good forum to share.
> *From:* Clinton Begin [mailto:clinton.begin@gmail.com]
> *Sent:* Thursday, December 03, 2009 7:47 PM
> *To:* user-java@ibatis.apache.org
> *Subject:* Re: IBatis 3 Exceptions
> Nope.  Nothing technical.  I just happen to hate checked exceptions.  :-)
> The original exception is always nested within the runtime one though, so
> you have full access to everything you need.
> There is a bit of placeholder code where I had intended to build a
> hierarchy of exceptions, similar to Spring's exceptions.  But honestly, I
> cannot recall a time in my 12 years of Java coding when I could actually do
> something useful with a database exception, other than apologize to the user
> with a dialog box.
> Clinton
> On Thu, Dec 3, 2009 at 2:15 PM, Alex Sherwin <alex.sherwin@acadiasoft.com>
> wrote:
> Why does IBatis 3.0 throw IbatisException (RuntimeException) instead of
> checked exceptions?
> Is this a limitation now due to the dynamic nature of the generic typed
> mapped statement classes?  IbatisException doesn't even seem to wrap
> SQLException, I see it wrapping the native exceptions from my JDBC driver
> (MySQL).
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