I have one question in mind after reading what you wrote, in wich way you have better control in Objectify than Twig ? I'm interested since I moved from Objectify to Twig and didn't end up in that situation, yet.
For the cons of only one Developper, he may be alone, but he answer every single one question asked in his mailing list, though righ now he's in only for two weeks. And he works really fast, bug fix are often done in less than two days. Christian On Sun, Apr 25, 2010 at 5:11 AM, David Sowerby <david.sowe...@virgin.net>wrote: > hi jbdhl > > I wish there was an easy answer too - but I suppose at least we have > choice! > > My experience, which I hope will at least help you a bit .... > > For back ground .... I am transferring a prototype developed using a > db4o back end, but had little done for the UI. There are a lot of > relationships in the domain layer, and the design was very much OO not > RDBMS > > I started by using JDO thinking it would give me portability. I got > it to work, but seemed to end up with some messy code. To be fair, > that in part was due to my lack of real understanding of GAE, but I > didn't really feel I had achieved portability either - there would > still have been changes to make to move elsewhere > > I therefore abandoned the idea of portability, accepting that I would > probably have to re-write the Dao layer anyway, if ever I want to > move. I decided that it would be better to spend more time on getting > that Dao layer isolated and independent - that would give me > reasonable portability without compromising the different strengths of > different persistent platforms. > > I tried Twig - it seemed a good solution, and was certainly easy to > set up and use. I found the documentation is bit sparse on property > translators, but otherwise I had no real problems. The amount which > Twig takes away from you is one of those classic blessing/curse > situations - it is a blessing not to have to think about some of the > detail, but you lose control. I felt that once I had understood GAE, > I may be losing some of benefits by not having enough direct control - > for this application. I would certainly consider Twig again for other > applications. > > So I have now migrated to Objectify, which seems fairly > straightforward, and I have the level of control I was looking for - > with a particular eye on performance since I do not yet have any idea > how my application will perform > > I'm afraid the Twig-Objectify discussions occasionally get a bit like > a religious argument, which is a shame because they have both done a > great job, but with different approaches - and why not? They serve > different needs. > > You have probably read this already but I found this tremendously > useful to understand GAE, which in turn helped me understand the > choices I was trying to make (the Objectify reference isn't a plug - > it is just a very well written article) > > http://code.google.com/p/objectify-appengine/wiki/Concepts > > Good luck - it would be interesting to know what you decide in the > end ... > > > On Apr 25, 5:42 am, bufferings <bufferi...@gmail.com> wrote: > > Hi > > > > I like Slim3.http://sites.google.com/site/slim3appengine/ > > > > -- > > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > > To post to this group, send email to > google-appengine-j...@googlegroups.com. > > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > . > > For more options, visit this group athttp:// > groups.google.com/group/google-appengine-java?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
