It's cool idea and you know I've been advocating it for a long time. That's Nirvana ;-)
Imho: Code meta model: xjavadoc Db meta model: commons-sql + some stuff from middlegen Uml meta model: probably a simpler model over MAF (something more diff-able with xjavadoc I mean) There are other models we can throw in too: a soap-envelopeable mapping of an object, or an xml mapping (like castorxml). What's important is that you always map from source code + @tags to something external and vice versa, not from db schema to uml for example, code sits there always because it's the design in the code and you can always express it in code and @tags. So what we need is defining ToCode and FromCode interfaces and let it work on all elements of our meta model: A DBTableToCode diff-er which aggregates DBColumnToCode diff-ers. Simple command/composite objects. With command it can be undoable too: undo new-attribute which resulted in creating a new column in db. Needless to say we won't need a complete rerun of the synchronizer (ejbdoclet for example) to get the intf/db/whatever, the fine grained Diff-er can work on a mini unit of work. I'm starting to think that we need more fine grained control over all elements of the generation process. I've already talked about a method-overriding dilemma with Aslak. Raw Velocity templates have no sense of outputted code, is it a method I'm outputting? Is it an overridden one? I just output it and forget about it. I really like the idea of moving many of the template stuff to normal command-like java codes. Look at what Rickard does with the command pattern, basically all his fireworks are: commands and aspects/introspectors. So as you can see I'm proposing something which is even more radical than XDoclet2 itself. What do you think? Ara. > -----Original Message----- > From: Aslak Hellesøy [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, October 15, 2002 2:56 AM > To: [EMAIL PROTECTED]; middlegen- > [EMAIL PROTECTED] > Cc: [EMAIL PROTECTED]; Ara Abrahamian > Subject: db<->code<->uml? > > Hi! > > Matthias Bohlen (author of UML2EJB - http://uml2ejb.sf.net/) wrote today: > http://sourceforge.net/mailarchive/forum.php?thread_id=1181378&forum_id= 10 > 15 > 4 > > And Ara Abrahamian followed up with this: > http://roller.anthonyeden.com/page?pageid=065218131008103306542336000026 &u > se > rname=ara_e > > I'm curious to hear what you Middlegen users out there think about this > bus > thingy. I think it's a very good idea, and Middlegen/XDoclet/UML2EJB are > all > dynamic projects that could nicely achieve the described goal if we agree > on > a way to do this. Good and bad ideas are welcome! > > Regards, > Aslak > http://www.freeroller.net/page/rinkrank ------------------------------------------------------- This sf.net email is sponsored by: viaVerio will pay you up to $1,000 for every account that you consolidate with us. http://ad.doubleclick.net/clk;4749864;7604308;v? http://www.viaverio.com/consolidator/osdn.cfm _______________________________________________ middlegen-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/middlegen-user
