Re: [emfindex-dev] API Changes

[Jan Köhnlein <jan.koehnlein@xxxxxxxxx>]

Hi Knut,

sorry, I didn't mean to spoil your usecase ;-)

It is important to have clear requirements for the eventing in order  
to discuss if it makes sense to have it inside EMF Index or on top of  
it. So as a client, could you elaborate on

* What you are currently achieving with the events?
* What kind of events do you rely on (granularity, when fired,  
concurrency)?
* Are there any scalability or performance issues to be taken into  
account?

Thanks
Jan

Am 13.10.2009 um 08:20 schrieb Knut Wannheden:

> Hi all,
>
> On Fri, Oct 2, 2009 at 15:14, Jan Köhnlein <jan.koehnlein@xxxxxxxxx>  
> wrote:
> > *API cleanup*
> > I removed some classes / parts that were not referenced, i.e.
> > TransactionException. We should try to avoid putting things in the  
> > API we
> > don't need yet. Please complain if you need one of these classes.
> > I also completely removed the event API. In Xtext, we're currently  
> > using
> > workspace resource listeners (an eclipse builder) and we are happy  
> > with
> > these coarse-grained events. We can add it later on once we have  
> > clear
> > requirements.
>
> We have a case where we were using the EMF Index event API: We
> implemented an application level cache on top of the EMF Index. The
> Eclipse ResourceChangeListener isn't really an option as our index
> also contains objects which are not in the workspace.
>
> As an alternative we can build the caching into a custom index
> implementation, but we would prefer having an event API. Any other
> opinions on this?
>
> Regards,
>
> --knut
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