David, Yes controlling by adding and removing configurations (with factories) is possible with other means than iPojo. However, we have a system where we manage the configurations (they are present all the time) but start/stop them by setting an "enabled" (configuration property) to true/false. It is a lot more user friendly (and dynamic) than having to remove the configuration completely. It would take a lot of effort for us to change this pattern since we've built a lot of functionality around it.
/Bengt Den tis 7 sep. 2021 kl 17:36 skrev David Jencks <david.a.jen...@gmail.com>: > I haven’t looked at the condition spec nor IPOJO’s @Controller, but for > many years you’ve been able to influence the presence of DS component > instances through configuration by making the component > configuration-required and only supplying configurations for the instances > you want. > > I seem to recall also controlling whether instances are created by having > a mandatory reference and adjusting the target filter in configuration so > it is or isn’t satisfied. > > David Jencks > > > On Sep 7, 2021, at 6:02 AM, Thomas Watson <tjw...@gmail.com> wrote: > > > > The condition specification is part of OSGi R8 Core and Compendium > > releases. The OSGi R8 Core (Framework) implementation is available now > > with implementations available from Felix and Equinox. The > > condition factory specification is in the works but is not going to be > > included with the OSGI R8 specifications ( > > https://github.com/osgi/osgi/blob/design/168/.design/design-168.md). > But > > the declarative services specification for OSGi R8 has been updated to > > include how conditions can influence service components. A release > > candidate of Felix SCR 2.2.0-RC1 will be available shortly that > implements > > the latest OSGi R8 release candidate APIs. The final release of OSGi R8 > > compendium will hopefully be released by October. All of that means that > > it is not available in Karaf at this time. > > > > Tom > > > > On Tue, Sep 7, 2021 at 6:14 AM Bengt Rodehav <be...@rodehav.com> wrote: > > > >> Thanks Karl for your tip. > >> > >> Do you know which version of DS/SCR is required for using the new > condition > >> specification? Is it included in Karaf? > >> > >> Unfortunately I don't have the possibility to help develop iPojo. I've > >> helped out in a few projects before but I think iPojo is a bit over my > head > >> both in skills and time. > >> > >> Best regards, > >> > >> Bengt > >> > >> Den tis 7 sep. 2021 kl 11:10 skrev Karl Pauls <karlpa...@gmail.com>: > >> > >>> Hi, > >>> > >>> I agree that iPojo is a very good component model and it will be hard > >>> to replace it. I think the closest you could come to replace it with > >>> would be a combination of Declarative Services (DS/SCR) and the new > >>> condition specification [0] - obviously depends on what you where > >>> actually doing with iPojo (for a simple @Controller it might be enough > >>> to use conditions). > >>> > >>> That said, let me point out: there is no reason iPojo couldn't still > >>> be developed - we just lack somebody to work on it for the time being. > >>> If you (and/or others you know) want to continue to develop it that > >>> certainly could be a way forward as well. > >>> > >>> regards, > >>> > >>> Karl > >>> > >>> > >>> [0] > >>> > >> > http://docs.osgi.org/specification/osgi.core/8.0.0/service.condition.html#service.condition > >>> > >>> > >>> On Tue, Sep 7, 2021 at 10:39 AM Bengt Rodehav <be...@rodehav.com> > wrote: > >>>> > >>>> I have noticed that iPojo is not supported any more. That is > >> unfortunate > >>>> for us since we have built a lot of our functionality on iPojo. It's > >>>> actually the best component model I have seen so far. > >>>> > >>>> We need to move on to something else then. What would you suggest? > What > >>>> alternative is closest to iPojo in functionality? > >>>> > >>>> The big difference for us has been the @Controller annotation. With > >> this > >>> we > >>>> have a system where we enable/disable services using configurations. I > >>>> really need some way to achieve the same but with another model than > >>> iPojo. > >>>> I would appreciate any suggestions. > >>>> > >>>> /Bengt > >>> > >>> > >>> > >>> -- > >>> Karl Pauls > >>> karlpa...@gmail.com > >>> > >> > >
