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Message-ID: <20040312215054.64446.qmail@web60805.mail.yahoo.com>
Date: Fri, 12 Mar 2004 13:50:54 -0800 (PST)
From: David Graham <grahamdavid1980@yahoo.com>
Subject: Re: [mapper] Any implementations yet
To: Jakarta Commons Users List <commons-user@jakarta.apache.org>
In-Reply-To: <1079119121.3903.17.camel@trout>
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--- "John E. Conlon" <jconlon@verticon.com> wrote:
> On Fri, 2004-03-12 at 11:04, David Graham wrote:
> > --- "John E. Conlon" <jconlon@verticon.com> wrote:
> > > Mapper looks like a nice solution to debundle mapping
> implementations
> > > but are there any implementations using Mapper right now. 
> > > 
> > > I would like to use this even if I have to write wrappers myself,
> but I
> > > don't want to re-invent the wheel. 
> > 
> > Each implementation of the Mapper interface will typically persist one
> > kind of business object.  
> Ah I think I see said the blind man. 
> 
> > Obviously this is specific to your app. so I
> > don't know what you mean by your question.
> > 
> 
> >From the introduction:
> 
> The purpose of Mapper is similar to Commons Logging. It isn't a mapping
> technology itself, it merely exposes common functionality of other
> mapping APIs.
> 
> I was expecting there may be mapper wrappers for some of the persistent
> technologies out there...

Mapper used to contain JDBC helper code but that was removed when DbUtils
was released.

> 
> What else do you have planned for the Mapper project besides
> documentation?

Much of the most useful code has migrated to other projects (ie. DbUtils)
and what remains is a small layer above mapping technologies.  I've been
considering changes to the Mapper interface and exception handling but
Mapper needs a bigger community before it can be released to commons
proper.  Feel free to contribute code/ideas!

David

> 
> thanks,
> John
> 
> 
> 
> 
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