On 09/15/2016 05:51 PM, Alan Bateman wrote:
On 15/09/2016 07:54, Peter Levart wrote:
One thing that is not clear is whether the yyy in "provides xxx with
yyy" directive of module declaration must be a concrete class and a
subtype of service type when the service is obtained via a static
method. For example, is the following a valid configuration: Service
type A, implementation class B (a subtype of A), static method
declared in C (unrelated to A) with return type B (or A or anything
between A and B?).
If yyy defines the static factory method then it does not need to be a
sub-type of xxx, the return type from the public provider() method
just needs to be xxx or a sub-type of. So the example is okay, no need
for C to extend/implement A.
I should note that the implementation isn't aligned with this yet but
there are updates to both javac and SL coming that will align it with
the current proposal.
-Alan
...so yyy can be any class or interface. It's provider() method can even
instantiate and return an instance of some class that is not part of the
module that provides the service. Hm...
Regards, Peter
