On Thu, Jul 12, 2012 at 9:45 AM, Hugi Thordarson <h...@karlmenn.is> wrote:
> >> Cayenne is still missing a lot of functionality when compared to > EOF/Wonder and generally feels less mature (understandably, since EOF is > ancient). This is perhaps not such a huge problem, since functionality can > always be added—but there is indeed a *lot* of work to be done to reach > feature parity with EOF. > > > > That seems like an overstatement to me. What things is it missing that > you need? > > Well, it isn't exactly "big things" that are missing, but rather an > aggregation of a lot of small things. Things I can live without, but would > rather not. EOF, Foundation, Wonder and the tools have 20 years of > refinement and integration in their design so moving from EOF to Cayenne > feels a little like moving from a Mercedes to a Wolkswagen Bug. > > Lack of IDE support, There is an Eclipse plugin, but it is not totally baked yet. > no prototypes, Cayenne already does the "switching databases" part of prototypes. The "faster model creation" part would be a nice add perhaps, but you get part of it (the java type assigment) already in Cayenne by auto-generating the ObjEntity from the DbEntity. no KVC This is already in ERCayenne > , "getAccessor" (ugh) The templates in ERCayenne don't use the get prefix > , limited support for inheritance, True > no ERXKey means no type safe queries and strings everywhere, ERXKey is in ERCayenneExample and I'll be committing a version Cayenne itself in the next few days. > somewhat buggy modeler I fixed a couple of the more annoying problems last week. Other than that I'm not aware of any behaviors that are truly bugs. But usability could certainly be improved. > with no support for cross-model relationships This is not true anymore if it was before. 3.1 includes the idea of a default node (basically a connection dictionary), so you can load models that are generic, framework level and use them along with your own model. > , no crossing relationships in raw row fetches (which makes it harder to > create reports from huge object graphs) True, this is the biggest gap I've come across - I have an app that does exactly that. However, there are a few built-in alternatives, namely SQLTemplate and EJBQLQuery. But if you have a lot of this in your app, you'll probably want to wait to consider migrating. > , no Project Wonder EO stuff etc. etc. > I have some Cayenne implementations of the specific utilities that I used from Wonder, but yes, this represents work to be done. > > Now, I know this comparison is unfair to Cayenne which is in fact great, > and Andrus and the others have done an amazing job. EOF is just hard to > beat, because EOF is very, very good. And as I said, Cayenne will no doubt > get there, I just believe it will take a lot of work. > Just a little work I think. The things that have to be done are almost all approachable by average developers. > > The only reasonable way to do a re-implementation of EOF would be to > start with Cayenne. It doesnt have the same API as EOF, but that could be > done; that hard work has already been done, only the API would need change. > But I think there are advantages in trying to merge with the Cayenne > community rather than taking it and forking it. > > I agree. If they're compatible it's probably the way to go. > > - hugi
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