j.l.r.Module: addUses but no addProvides

[Alan Bateman]

On 12/05/2016 08:00, Sander Mak wrote:
> Hi,
>
> I noticed that it is possible to reflectively add uses for a service in a module, but not to provide a service implementation. I'm curious what the reason is for this asymmetry. I would imagine that calling ServiceLoader.load() from another module could just return the new service implementation (in addition to existing ones) after a hypothetical j.l.r.Module.addProvides was called.
>
So far then we've had (to my knowledge anyway) only one case where this 
looked like it might be needed on the command line but we found another 
solution to that specific issue.

So no plan at the moment to add this, we want to see if there are 
compelling cases where service providers are created dynamically in 
(existing) modules before deciding whether to define this method or not. 
To be honest, I don't particularly like addUses but there are a few 
cases where libraries/frameworks need to locate service providers on 
behalf of consumers and so don't have any upfront knowledge about the 
service type.

-Alan.