uses is useless ?

[David M. Lloyd]

On 11/16/2016 04:44 AM, Alan Bateman wrote:
> On 16/11/2016 10:25, forax at univ-mlv.fr wrote:
>
>> :
>> The whole point of uses is to enable a kind of static analysis on the
>> service dependencies,
>> if 'uses' is not required, if you can easily bypass it or it doesn't
>> provide useful information,
>> then it should be removed from the spec.
> `uses` is used to link the consumers of services to the providers of
> services. If nobody `uses S` then the modules that `provides S with ...`
> will not be resolved (assuming nobody directly depends on these service
> provider modules).
>
> The scenario where a framework uses ServiceLoader on behalf of a
> consumer really needs the consumer to declare that it uses the service
> type, otherwise there is no guarantee that the modules that provide
> implementation of the service will be resolved.

That's really a usability regression though, isn't it?  In the past, I 
could always use ServiceLoader with a ClassLoader argument to specify on 
whose behalf I'm loading.  In fact we do this quite a lot today.

-- 
- DML