Hi, The concept of Fetch Plan in particular and the perspective of data as graph (as opposed to rows in a table) are prevalent in non-RDBMS world for many years. JDO (JSR-12) -a precursor to JPA in many ways - had specified FetchPlan in its API. The "only RDBMS" view of the world does not see fetch as orthogonal to selection. But, at times, being a minority has its own pleasures ...
OpenJPA has provided the core facilities in terms of fetch plan, detach (before JPA 2.0 made it a standard), reattach/merge, Detach State Management-- that can be utilized to build high-performance multi-tier web application *without* any need to break the unified domain abstractions through Data Transfer Objects, Data Access Objects etc. across the application tiers. Jean-Baptiste BRIAUD -- Novlog wrote: > > I already read that blog post and that's after reading it that I > decided to try OpenJPA. > I spent a lot of time as a consultant, in previous life, to educate > people to that concept in the early 2002-2003. > It was with OJB (as far as I remember) and I didn't know how to name > that "thing". > > That blog post was like a flash of light in my mind : not only I'm not > alone wanting that feature but it is now well understood and named > "fetch plan" and more important, it has been implemented in an Apache > framework so I won't have to code all the machinery myself ! > > I won't felt lonly anymore, thanks OpenJPA :-) > > On Aug 5, 2009, at 15:40 , Pinaki Poddar wrote: > >> >>> That is really so po-wer-full : it works also on request and it solve >> entierly the problem ! >> >> fyi... >> >> >> http://webspherepersistence.blogspot.com/2009/02/dynamic-fetch-planning.html >> >> >> >> ----- >> Pinaki >> -- >> View this message in context: >> http://n2.nabble.com/Dynamic-fetch-plan-question-tp3350020p3391768.html >> Sent from the OpenJPA Users mailing list archive at Nabble.com. >> > > > ----- Pinaki -- View this message in context: http://n2.nabble.com/Dynamic-fetch-plan-question-tp3350020p3394908.html Sent from the OpenJPA Users mailing list archive at Nabble.com.
