Neil, David, thank you. I'll go for a ServiceTracker hosted in a DS component.
Pawel On Fri, Apr 24, 2015 at 7:33 PM, Neil Bartlett <[email protected]> wrote: > Hi David, yes I agree. Additionally, using a DS component as the entry > point would allow for ease of configuration through Config Admin. > > The blog post also needs to be updated for Java Generics… > > Regards, > Neil > > > On 24 Apr 2015, at 17:21, David Jencks <[email protected]> > wrote: > > > > It looks to me like your article leaves out an important detail, namely > what is supposed to cause the service tracker extensions to get set up in > the first place. I'd suggest that the ideal answer is…. a DS component. > If your per-service objects need other "constant" service references (i.e. > they get the same ref for each per-service instance) then these can be > provided as DS references in this DS component. > > > > I agree that using ServiceTracker in this way is reasonable and simpler > than only using DS. > > > > thanks > > david jencks > > > > On Apr 24, 2015, at 12:05 PM, Neil Bartlett <[email protected]> > wrote: > > > >> Service tracker really is better for this. See my (very old) blog post: > >> > >> http://njbartlett.name/2010/08/05/when-servicetrackers-trump-ds.html > >> > >> In your case I recommend returning the ServiceRegistration object from > addingService(). > >> > >> Neil > >> > >> -- > >> Neil Bartlett > >> > >> > >> On Friday, 24 April 2015 at 16:53, Pawel Pogorzelski wrote: > >> > >>> Guys, > >>> what's the standard approach for registering a DS component/OSGi > service in > >>> response to a service appearing in the container? Is ServiceTracker > the way > >>> to go? I'm using Declarative Services and would like stick to DS if > >>> possible. Explanation of what I'm trying to accomplish below. > >>> > >>> I'm using Felix with Gemini JPA which registers EntityManagerFactory as > >>> OSGi service per each persistence unit configuration. Since I need to > open > >>> connections to multiple DBs with the same schema I end up having > multiple > >>> EntityManagerFactories in the container. I'd like to map them to DAL > >>> classes one-by-one. So, assuming I have PersonReposity in DAL I'd like > to > >>> have as many instances of it as EntityManagerFactories for the given > >>> schema. Is SCR able to do it? > >>> > >>> Cheers, > >>> Pawel > >>> > >>> > >> > >> > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] > > For additional commands, e-mail: [email protected] > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
