> How is id + version different from number + version? id and number are > both auto-incrementing. I may have multiple objects with the same number, but with different versions. Id is unique.
> I don't see how Java is going to make this problem (with the design) > go away. There is a little 'framework' I am using. It is more clear for me to use raw sql-code for creating tables and manipulating with their data. Abstracting from sql and specific DBMS in rails doesn't mean you shouldn't learn them and know, how they work. But with JDBC I am not bound by limitations of different adapters. (PS: I don't want to start holy wars here :-) ) On Sep 9, 9:48 pm, "E. Litwin" <[email protected]> wrote: > How is id + version different from number + version? id and number are > both auto-incrementing. > > I don't see how Java is going to make this problem (with the design) > go away. > > On Sep 9, 10:36 am, adrianopol <[email protected]> wrote: > > > It is for versioning. I have a pair (number, version) as another > > method to identificate a row in the table, so "number" and "id" are > > absolutely independent. So, to my mind, more low-level language and > > libraries are better in this situation. > > > On Sep 9, 9:17 pm, Marnen Laibow-Koser <rails-mailing-l...@andreas- > > > s.net> wrote: > > > adrianopol wrote: > > > > Thanks! Frankly speaking, I've decided to use java for this project. > > > > It's not good to fight with framework's logic) > > > > So learn it instead of fighting with it. Anyway, while I'm surprised > > > that Rails migrations can't do what you want here, I also can't see how > > > more than one autoincrement field in a table would be useful: if you > > > have one, then you can calculate all the others from it. > > > > Best, > > > -- > > > Marnen Laibow-Koserhttp://www.marnen.org > > > [email protected] > > > -- > > > Posted viahttp://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
