[infinispan-dev] Merged and MergeEvent in 4.2

[Manik Surtani]

Yes, both types of notifications should be emitted.  I'll take a look at this today.  Reopening ISPN-609.

On 11 Oct 2010, at 20:42, Mircea Markus wrote:

> 
> On 11 Oct 2010, at 20:37, Vladimir Blagojevic wrote:
> 
>> 
>> On 2010-10-11, at 1:22 PM, Mircea Markus wrote:
>> 
>>> 
>>> On 11 Oct 2010, at 18:12, Vladimir Blagojevic wrote:
>>> 
>>>> Hey,
>>>> 
>>>> No need to register a new listener for merge event. There is no addMergeEventListener, only addListener! Manik's mechanism looks for annotated callback methods in a listener and registers them with event notifiers. So when you do addListener(x) and x has methods annotated with ViewChaged and Merged annotations then x will get registered in appropriate list in CacheManagerNotifierImpl. Very ingenious mechanism. 
>>>> 
>>>> Yes, I made MergeEvent subclass of ViewChangeEvent. It was not before. To all our view change listener classes that had ViewChange annotated method callback I added Merged as well.
>>> I see! My question is: if a  cluster merge happens, and I have a method annotated with ViewChange *only* (i.e. doesn't have @Merged) - will the @ViewChange annotated method be called? IMO it should because merge is only a special kind of view change.
>> 
>> Aha, I see :) It will not get called! The root cause is split of view notification in JGroups transport! We have to make this clear for 4.2 release! 
> That's my point :) I think it should be called as merge is a particular type of view change (the view literally changes)
>> 
>> Vladimir 
>> 
>> 
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--
Manik Surtani
manik at jboss.org
Lead, Infinispan
Lead, JBoss Cache
http://www.infinispan.org
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