[hibernate-dev] Hibernate & Java 5 ?

[Steve Ebersole]

I guess I have just been waiting until we can actually leverage 1.5
features (ala utilize enums or expose generics/typing).  That will not
happen for 3.5. 

Now statistics are encapsulated behind a set of interfaces (Statistics
and StatisticsImplementor).  We could make this alterable like I did for
JDBC 3/4 based on the JVM.  That would mean reflection code though.  

I do not actually know of any real cases of Hiberate being used in 1.4
environments today.  So maybe we can just make it 1.5 compatible.

Votes?


On Tue, 2009-12-01 at 14:38 +0100, Alex Snaps wrote:
> We've been doing some improvement to the Hibernate statistics at
> Terracotta, when we realized how much the synchronization on it was
> impacting throughput in our tests.
> That is work we wanted to contribute back to you guys, should
> Hibernate Core be target at 1.5. As it seems that's not yet the case,
> so there isn't much you guys will be able to do with these changes...
> We discussed about that at Devoxx with Max and Emmanuel and thought it
> was okay to have 1.5 impl. of the specs (java.util.concurrent based)
> already. Apparently not :( What timeframe do you see 1.4 support being
> dropped?
> 
> On Tue, Dec 1, 2009 at 1:44 PM, Steve Ebersole <steve at hibernate.org> wrote:
> > I have issues reloading Maven-based projects in IntelliJ as well.  I
> > simply try to minimize the number of times I reload.
> >
> > Hibernate is *built* with JDK 1.5, but not all the modules are 1.5
> > compatible.
> >
> > What "statistics work" discussion?  I must have missed that.  But for
> > sure the hibernate-core module should remain 1.4 compatible.  Dropping
> > 1.4 support is on the roadmap, but not for 3.5
> >
> >
> > On Tue, 2009-12-01 at 11:32 +0100, Alex Snaps wrote:
> >> Hey,
> >> Doing a svn update of the Hibernate trunk, I realized I probably had
> >> changed the project to be Java5 manually as it reverted to 1.4
> >> (because of some pom.xml change) in IntelliJ.
> >> Talking to Max and Emmanuel at Devoxx I thought trunk was now to be
> >> Java 5? Is this not the case after all, or are poms only update when
> >> the first Java5 language/jdk feature sneaks in?
> >> As discussed we discussed, all the statistics work heavily rely on
> >> java.util.concurrent classes, so that is "more or less" important for
> >> that patch...
> >> Btw do you guys have a contributor agreement somewhere, I couldn't find it.
> >> Thanks,
> >> Alex
> >>
> > --
> > Steve Ebersole <steve at hibernate.org>
> > Hibernate.org
> >
> >
> 
> 
> 
-- 
Steve Ebersole <steve at hibernate.org>
Hibernate.org