[hibernate-dev] Envers set up

[Steve Ebersole]

Is anyone aware of a current, valid use-case of allowing the same
listener class to be registered multiple times for the same event?  I
know we have many "multi-faceted listeners that listen for many events.
Thats not what I mean.  I mean, is there ever a time anyone can think of
when something like this needs to be considered valid:

Configuration.setListeners( 
    new SaveEventListener[] {
        myCustomSaveListener,
        ...
        myCustomSaveListener
    }
);

?


On Mon, 2010-09-13 at 08:48 -0500, Steve Ebersole wrote:
> I am not a fan of this.  For a number of reasons.  
> 
> First this means added complexity to manage the list of listeners in
> regards to (1) not over-writing any explicitly registered listeners and
> (b) not duplicating listeners.
> 
> Second keep in mind that the hibernate3.jar from the release
> distribution we put on SourceForge contains all classes  Some anyone
> using it would always "have envers on the classpath".
> 
> On Mon, 2010-09-13 at 11:49 +0200, Emmanuel Bernard wrote:
> > I would favor such model ie. an automatic event registration when the lib is in the classpath.
> > We could generalize that actually to let any lib to register its event listeners (maybe something a la service locator).
> > Today Search and Validator have a specific hook in Core.
> > 
> > On 11 sept. 2010, at 09:20, Hardy Ferentschik wrote:
> > 
> > > In Search and Validator we enable the listeners when we detect Search res.  
> > > Validator on the classpath (with an option
> > > to explicitly not enable it). Maybe we could do the same with Envers?
> > > 
> > > --Hardy
> > > 
> > > On Fri, 10 Sep 2010 20:40:04 +0200, Steve Ebersole <steve at hibernate.org>  
> > > wrote:
> > > 
> > >> What do you think of an option that says "enable envers", rather than
> > >> explicitly needing to set up each listener?
> > > 
> > > 
> > > _______________________________________________
> > > hibernate-dev mailing list
> > > hibernate-dev at lists.jboss.org
> > > https://lists.jboss.org/mailman/listinfo/hibernate-dev
> > 
> 

-- 
Steve Ebersole <steve at hibernate.org>
http://hibernate.org