There are two things that I want/need in a persistence framework and I have
yet to find them. I know that OJB does not support them and I have not
looked very hard at the others. Maybe you can tell me if your product
handles them.
1) Read only attributes so that a setter method is not automatically
generated for one and that value is never persisted, just read.
2) The ability to persist an object to a different "table" than it was read
from. Yes this seems odd so let me explain in a few simple words followed by
a simplistic example. The simple words are - performance and simplicity.
When developing a web app database I tend to go for normalization. The
employees are in one table with a FK to the department table. But, when
displaying the data on a page I want to display the name of the department,
not its database ID. So, I use a view that joins the two tables meaning that
a) I get all the data that I need in a single query I can
get all of the information I need for display (performance)
and...
b) I don't have to worry about reading data from multiple
queries and/or multiple objects (simplicity).
But, I cannot guarantee that the view I am reading from is updateable so I
have to insert/update to the simple tables (employee for instance).
So, can you help me out here? Can your product do this?
rjsjr
> -----Original Message-----
> From: Robert [mailto:[EMAIL PROTECTED]]
> Sent: Friday, October 04, 2002 4:12 PM
> To: 'Struts Users Mailing List'
> Subject: RE: Persistence Framework Comparison?
>
>
> We have just released a free download for our eQ! software which you
> might want to take a look at: www.browsersoft.com/eQ
>
> The demo app is built using Struts for the controller, JSTL for taglibs,
> our persistence layer and our XML scripting engine for process logic.
>
> I'm the contact for it if you want more info.
>
> - Robert McIntosh
> [EMAIL PROTECTED]
>
> -----Original Message-----
> From: Karr, David [mailto:[EMAIL PROTECTED]]
> Sent: Friday, October 04, 2002 3:18 PM
> To: 'Struts Users Mailing List'
> Subject: RE: Persistence Framework Comparison?
>
> > -----Original Message-----
> > From: James Higginbotham [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, October 04, 2002 1:12 PM
> > To: Struts Users Mailing List
> > Subject: RE: Persistence Framework Comparison?
> >
> >
> > > >(I wish Struts had a non implemented persistance interface)
> > >
> > > Really? I think Struts is quite good at what it does, and to me,
> > > persistence seems to outside the scope of a web application MVC
> > > framework.
> >
> > Agreed. Struts does what it does best - web MVC framework. What the
> > original author of the comments (sorry, lost in my mailbox
> > right now) is
> > looking for is what I would recommend happen on top of
> > Struts. Something
> > that takes Struts, a proven OSS O/R framework, and some glue to make
> > DB-driven Struts applications faster to develop.
> >
> > Anything like that out there? Anyone working on this or have
> > one in the
> > planning stages? I've been wanting to craft one myself, but
> > haven't had
> > the time. But if one existed, I'd problem knock out a couple of pet
> > projects faster.
>
> I haven't used it, but I get the feeling that the Expresso framework
> (http://www.jcorporate.com/) tries to fill this need to some extent.
>
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