Hello, Steve, yes the answer for "why native?" is portability, indeed.
Could you please enlighten me, what the "enhanced" generators precisely are and why they would fix my problem? At least, I don't find the term "enhanced" in the IdentifierGeneratorFactory and neither of the classes implementing IdentiferGenerator in the hibernate sources contain it. Thanks, Jochen On Fri, Dec 4, 2009 at 4:30 PM, Steve Ebersole <st...@hibernate.org> wrote: > First I have to ask 'why native?'. Doing this with the native generator > will present you with an interesting challenge of how you handle > IDENTITY or other post-insert style generation. post-insert means after > the insert has happened, so how would you be adding your prefix? And > even if you answer that, generally speaking columns defined as IDENTITY > are not eligible for update. > > If the answer to 'why native?' is portability, then why not use the > "enhanced" generators. These are intended for portability in a much > better way then native was. > > On Fri, 2009-12-04 at 08:50 +0100, Jochen Wiedmann wrote: >> Hi, >> >> for some particular project, I'd like to have a custom >> IdentifierGenerator, which could be thought of as an extension of the >> "native" IdentifierGenerator. Basically, it ought to take the id >> generated by the "native" generator, but then do some magic with it, >> for example add a prefix. (Yes, I know, don't push me on that, I have >> already lost my struggle against a "telling ID".) >> >> Such an IdGenerator is easily implemented: Create a class, which >> queries the IdentifierGeneratorFactory for the "native" >> IdentifierGenerator and use that. (Works fine.) >> >> The problem is, that the "native" generator is sometimes implementing >> PostInsertIdentifierGenerator. Of course, I can have my generator >> implement PostInsertIdentifierGenerator as well, but that means that >> it will break on systems without a sequence. OTOH, I can remove the >> interface, but then it won't work on the other systems. >> >> An alternative might be, to add a new "myNative" term to the >> IdentifierGeneratorFactory, but that class neither allows extension >> (it's final, for whatever reason) nor does it support extending the >> map of builtin types. >> >> Any ideas? >> >> Thanks, >> >> Jochen >> >> > -- > Steve Ebersole <st...@hibernate.org> > Hibernate.org > > -- Germanys national anthem is the most boring in the world - how telling! _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
