[hibernate-dev] DTO Projection support for native queries?

[Steve Ebersole]

On Fri, Aug 18, 2017 at 10:21 AM Arnold Gálovics <galovicsarnold at gmail.com>
wrote:

> Hey Steve,
>
> Thanks for the answer.
>
> I was aware of these two solutions but there are definitely projects which
> want to use DTO projections and cannot (don't) want to utilize neither the
> annotation nor the native Hibernate API.
>
> I think using the approach I mentioned would be beneficial, at least I see
> the potential.
>
> Do you think if we implement this it would violate some contract or do you
> see anything which prevents us from supporting this?
>

It's not a question of whether we *can* do this.  Its programming...
essentially anything is possible.  Its a question of whether it makes
sense.  And I personally am not sure this does conceptually, although I
will for sure listen to other opinions.

At the very least however I am not even going to consider this in 5.x

And btw... you say you do not want to use the native Hibernate APIs yet you
want to use some Hibernate-specific feature beyond the spec.  Assuming the
desire to not use the Hibernate APIs is to allow for that completely
pie-in-the-sky idea of provider portability adding this feature actually
introduces a unequivocally worse situation.  At least when you use the
Hibernate-specific APIs you will get a compile-time error when you switch
vendors; but using this proposed feature you'd only get such a error at
runtime - and you'd still have the problem of how to solve this in the new
provider...