I'm still working on the kick off sample but I got lost in the complexity of apache ivy... I hope I'll make it within the next 2 weeks. So stay tuned :-) Richard
On Tue, Jun 23, 2009 at 3:45 PM, Ross Sargant<[email protected]> wrote: > Yee, > Very interesting. This ties in to some discussion on this list from a > couple of weeks ago. > My impression of the "binding directly into domain models" pattern has > always been that it is great for stand-alone web-applications that you want > to get completed as fast as possible and don't care about having a strict 3 > tier design. > > If you need 3 tiers, then I agree that binding into domain models isn't the > best way to go. I'm using all the same basic technologies you are (stripes, > spring hibernate) but I don't allow the web tier to modify model/entity > objects directly. I do this using the low-tech method of package level > visibility on setters, mutators & business logic methods on my entities. I > do still return model objects directly to the web-tier to support OSIV, lazy > loading..etc but the web-tier has read-only access. This particular setup no > doubt seem like a hack-job to some but for us it has been the right balance > of practicality and purity :) I certainly never realized it at the time, > but it also protects me from this issue you described since no entity > objects can be modified in the web-tier outside of a transaction. > > My particular application doesn't have a need for very complex structures to > be passed from the web-tier to the service tier but where it does, I just > create DTOs and uses stripes to bind them. The good news is that stripes > still helps out a great deal in this area. > > > > > On Tue, Jun 23, 2009 at 5:38 AM, CN Yee <[email protected]> wrote: >> >> CN Yee <yeec...@...> writes: >> >> > >> > I just confirmed that the problem lies with hibernate. >> > >> > The following code will persist everything in the session to database. >> > >> > Session s = sessionFactory.getCurrentSession(); >> > Transaction tx = s.beginTransaction(); >> > tx.commit(); >> > >> > That is very nasty. Anybody has any experience to share regarding this? >> > >> > Regards, >> > Yee >> > >> I found the following; >> >> "With hibernate it is important to understand what exactly is going on >> under the >> covers. At every commit boundary it will attempt to flush all changes to >> objects >> in the current session regardless of whether or not the changes where made >> in >> the current transaction or any transaction at all for that matter." >> >> http://stackoverflow.com/questions/244381/hibernate-transaction-problem >> >> I think this pretty confirms that binding to domain model pattern is >> indeed not >> tenable for 3 tier architecture. >> >> Regards, >> Yee >> >> >> >> >> ------------------------------------------------------------------------------ >> Are you an open source citizen? Join us for the Open Source Bridge >> conference! >> Portland, OR, June 17-19. Two days of sessions, one day of unconference: >> $250. >> Need another reason to go? 24-hour hacker lounge. Register today! >> >> http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org >> _______________________________________________ >> Stripes-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/stripes-users > > > > -- > Ross Sargant > Software Engineer > p: 954-623-6018 x2108 > email: [email protected] > > TVR Communications LLC > 541 S. State Road 7,Suite 5,Margate, Florida,33068 > > http://www.tvrc.com > > > ------------------------------------------------------------------------------ > Are you an open source citizen? Join us for the Open Source Bridge > conference! > Portland, OR, June 17-19. Two days of sessions, one day of unconference: > $250. > Need another reason to go? 24-hour hacker lounge. Register today! > http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org > _______________________________________________ > Stripes-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/stripes-users > > -- Richard Hauswald Blog: http://tnfstacc.blogspot.com/ LinkedIn: http://www.linkedin.com/in/richardhauswald ------------------------------------------------------------------------------ Are you an open source citizen? Join us for the Open Source Bridge conference! Portland, OR, June 17-19. Two days of sessions, one day of unconference: $250. Need another reason to go? 24-hour hacker lounge. Register today! http://ad.doubleclick.net/clk;215844324;13503038;v?http://opensourcebridge.org _______________________________________________ Stripes-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/stripes-users
