RFE simplify usage of patched module [by Robert Scholte, from jdk-dev]

[Alan Bateman]

On 14/02/2020 08:02, Robert Scholte wrote:
> :
>
> With a tool like Maven it is already possible to compile and run patched modules, but in case of requiring java.* modules it is very awkward that it requires additional configuration in the pom instead of some dedicated module descriptor, which feels most natural.
> You'll get an exception like: package java.sql is declared in module java.sql, but module some.module.name does not read it
> And the first thing that comes to mind is: add java.sql to the (main) module descriptor. But this should not be done.
>
Can you summarize how this works when compiling tests that reference 
types in modules on the application module path? Is the Maven compiler 
plugin uses `--add-modules ALL-MODULE-PATH` to include they are all 
resolved? If so, I'm just wondering about readability, do you also 
generate a list of --add-reads options too? I guess I'm just wondering 
why the issue is specific to modules that in the run-time image that 
aren't transitively required by the (unpatched) module.

-Alan