[Qt5-feedback] ORM in Qt5 ?

[Iván Todorovich]

I agree. JSON should be supported. Besides, it isn't anything
complicated to implement. Just look at QxtJSON for example.

2011/5/12 Frédéric Meurou <fmeurou at gmail.com>:
> I also think including JSON in data sources is mandatory, as it is a common
> exchange format nowadays, and it is far less cumbersome than XML.
>
>
> 2011/5/12 Andre Somers <andre at familiesomers.nl>
>>
>> Hi,
>>
>> Op Do, 12 mei, 2011 11:54 am, schreef daniel.molkentin at nokia.com:
>> > Hi Frederic (and others),
>> >
>> > a lot of features proposed either here or in the blog comments is
>> > functionality that could be added at any time. One example is a ORM
>> > library. I can be added at a later point in time (Qt 5.1).
>> >
>> > Also, most probably a lot of requests won't be implemented by Nokia, but
>> > rather someone else.
>> > This is something to get used to. Traditionally new releases have
>> > triggered the same kind of requests, because only the trolls could get
>> > features in. Please think twice.
>> >
>> > There is no need to rush things into the .0 release. If you would like
>> > to
>> > see a certain feature, draft it, develop it, and contribute it (you will
>> > soon be able to).
>> >
>> > We should rather concentrate on core design issues that you need to get
>> > right for b/c reasons. After 5.0 is out (and I agree we should move on
>> > quickly, to not have a long gap after 4.8 and to avoid the temptation of
>> > serious breakage), we should Release Early, Release Often (tm), and get
>> > new features in along the way.
>>
>> All true, but at the same time I think it is the right moment to think
>> about the question if Qt needs some kind of data framework, what the
>> needed features of such a thing would be, and what would be needed to
>> realize it. If a conclusion is reached that in order to realize such a
>> thing, non-bc changes to existing classes are needed, then waiting with
>> this discussion until after the introduction of Qt 5.0 is pushing this
>> functionality back to 6.0.
>>
>> I think it _would_ be good to think about such a framework. I think it
>> would be very important to have. It should not only work on top of QtSQL,
>> but should, IMHO, have a *much* broader scope. It should be able to work
>> on top of different back-ends (QtSQL, but also local or remote files in
>> XML or binary formats, as well as web services for instance). It should be
>> asynchronous (as opposed to the current QtSQL stuff) to make it work
>> smoothly for bigger data sets and/or for data sources that suffer from
>> high latency.
>>
>> Such a thing is not a trivial beast, but it could have a huge impact on Qt
>> I think. I am not sure it can be realized in an elegant way by gluing it
>> on to an existing Qt version. The answer may be that it can, but it would
>> be good to think about it.
>>
>> André
>>
>> >
>> > On May 12, 2011, at 11:18 , ext Frédéric Meurou wrote:
>> >
>> >> Hi,
>> >>
>> >> I've been playing with QtSql and IMHO, the SQL layer is suboptimal,
>> >> either in querying the database, and in being integrated in a app :
>> >> - from what i've seen, queries should be constructed using JOINs.
>> >> - from an integration point of view, dealing with foreign keys is a
>> >> real
>> >> pain. Although QSqlRelationalTable helps when it comes to displaying
>> >> information, fetching data across tables using foreing keys requires a
>> >> lot of overhead.
>> >> I've used the Django ORM, and it really lessens the dev time.
>> >> I know there are few Qt ORM projects out there, it would be great to
>> >> integrate the in the QtSql module.
>> >>
>> >> Regards,
>> >>
>> >> Fred
>> >>
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