I completely disagree with you assessment that is is a big performance hit.
In the persistence engine I know exactly which cmp fields have been changed and if any relationships have been changed. This inModified stuff is originally designed to eliminate unnecessary calls to ejbStore because it was so expensive (especially before tuned updates). With the new engine, all you avoid is a single call through the interceptor stack (~0.06 ms), and you give up on having a reliable ejbStore life cycle event. The simple isModified implementation in jaws breaks the relationships because a bean can be involved in a blind relationship where it does not have an relationship accessor. Therefore the bean provider has no way of knowing if the relationship has been modified. There is also the problem of relationship collection methods. Is modified method is just bad news for relationships, and is an attempt to solve problems we don't have in EJB 2.0. -dain P.S. marc, is the clock on your computer off by two hours or is the time zone set wrong, because your messages always show up a time stamp two hours in the future. marc fleury wrote: > This strikes as a biggy for performance. > > Would you mind explaining the "breaking" of dependency you observed... can > we power our way through this? again I think this is a biggy in perf but I > am largely ignorant of the way it is supposed to work. > > marcf > > |-----Original Message----- > |From: Dain Sundstrom [mailto:[EMAIL PROTECTED]] > |Sent: Friday, February 22, 2002 1:46 PM > |To: marc fleury > |Cc: Jboss-Development@Lists. Sourceforge. Net > |Subject: Re: [JBoss-dev] Set on abstract to generate isModified > | > | > |I don't really generate anything other then the simple DP. I have has > |automatic isModified from the beginning. I have also removed all > |support for isModified in the CMP 2.0 code as it breaks relationship code. > | > |The current implementation could be better, but this is a very low > |priority. > | > |-dain > | > |marc fleury wrote: > | > |> At the aussie training (god I am still so jet-lagged from this > |:( the guys > |> wanted to know if CMP 2.0 in JBoss did the automated generation of > |> isModified() on set operations. > |> > |> i assume yes but just wanted to make sure. > |> > |> marcf > |> > |> > |> _______________________________________________ > |> Jboss-development mailing list > |> [EMAIL PROTECTED] > |> https://lists.sourceforge.net/lists/listinfo/jboss-development > |> > | > > > _______________________________________________ > Jboss-development mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-development > _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
