Experience with creating a "databinding" API... hmmm... Hey, there's actually an implementation of DataView paging using criteria here: http://databinder.net/site/show/baseball-players (sorry I haven't kept up with my listserv reading)
So, I wonder what could be done in terms of generic databinding that would make everyone happy. I kind of think it is impossible, just because people have such different opinions about it, and those opinions are always in flux. I'm certainly interested in someday supporting Cayenne through Databinder, but it will be a pretty major refactor, and even then I don't see it being possible (or desirable) to abstract-out the differences between persistence libraries in any particular layer. Instead you might have flavors of the toolkit that work similarly, and share common interfaces where possible and useful. As for scaffolding / beanviews or whatever... the problem is those things never support complicated (but common) relations between objects. Rails scaffolding when I last checked was a one-table-only affair. So as much as that functionality looks good in demos, it has no use at all if your minimally useful datamodel already has basic connections in it. Nathan Eelco Hillenius wrote: > Thanks. I have to say that - now that I take a closer look after allmost > a year - I am not particularly content with the contrib-data and > contrib-hibernate packages. It works, but it could be much more elegant. > > It would be good to rethink the databinding from scratch, and come up > with something really good and generic. And on top of that we could > create a (t)rails-like package with generic object editing panels, > ready-to-use datagrids etc. > > Any readers that have experience with creating a databinding API and > want to join in on the effort? > > Eelco > > > Phil Kulak wrote: > >> Oops, spoke too soon. I didn't have to use DetachedQueries. >> >> On 6/3/05, Phil Kulak <[EMAIL PROTECTED]> wrote: >> >> >>> Here's what I came up with. It seems to work well so far. >>> >>> -Phil >>> >>> On 6/3/05, Eelco Hillenius <[EMAIL PROTECTED]> wrote: >>> >>>> Yes, that was a bug. Should be fixed now. >>>> >>>> Eelco >>>> >>>> Phil Kulak wrote: >>>> >>>> >>>>> Take a look at HibernateCountAndListAction.getQuery(). It looks to me >>>>> like it's been hard coded to the example query in the comment at the >>>>> top of the class by putting the "cd" alias in there. >>>>> >>>>> On 6/3/05, Eelco Hillenius <[EMAIL PROTECTED]> wrote: >>>>> >>>>> >>>>> >>>>>> Yes, is it does. PageableList is the the object that has the magic in >>>>>> it. It reads only the 'window' that it is currently in, so you >>>>>> don't end >>>>>> up with your whole database in memory. >>>>>> >>>>>> Eelco >>>>>> >>>>>> Jonathan Carlson wrote: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> I don't think the CD app example uses Hibernate to do the >>>>>>> paging. If I >>>>>>> remember right, it reads it all in and does the paging and >>>>>>> sorting in >>>>>>> memory.... but I could have missed something. >>>>>>> >>>>>>> - Jonathan >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>>>> [EMAIL PROTECTED] 2005-06-03 11:31:04 AM >>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>> I look like I've figured it out anyway, but for future reference, >>>>>>> where is the source for that example? I found the running >>>>>>> program. Is >>>>>>> the source only in CVS? >>>>>>> >>>>>>> On 6/3/05, Martijn Dashorst <[EMAIL PROTECTED]> wrote: >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>> Phil Kulak wrote: >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> It looks like you guys have that all figured out in the >>>>>>>>> contrib, but >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>> I >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>>> can't seem to figure out how it's supposed to be used from just >>>>>>>>> the >>>>>>>>> source. Is there an example anywhere I could look at? >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> You could take a look at the CD-App example. This one is rather >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> feature >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>> complete. 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