--add-opens for entire module

[Nicolai Parlog]

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 Hi Andrew,

I think this is a great idea but would like to point out that the
syntax proposal is inconsistent. It looks like it would allow a module
to be opened to specific target modules:

    --add-opens some.module=other.module

This is something that the module description does not allow - a
module is either open or not. Maybe you meant this?

    --add-opens <module>(/<package>=<target-module>(,<target-module>)*)+

 so long ... Nicolai



On 28.12.2016 08:30, Andrew Guibert wrote:
> 
> 
> In the currently accepted proposal for
> #ReflectiveAccessToNonExportedTypes [1], it is described that an
> entire module can be opened with the following example:
> 
> open module foo.bar { exports com.foo.bar; requires
> hibernate.core; requires hibernate.entitymanager; }
> 
> The current syntax for --add-opens option is:
> 
> --add-opens <module>/<package>=<target-module>(,<target-module>)*
> 
> Namely, the --add-opens option can only be used to open specific
> packages from a module, whilst in a module-info.java it is possible
> to open an entire module with a single directive. Therefore, I
> would like to propose altering the --add-opens option to more
> closely match what is achievable in a module-info file, such as:
> 
> --add-opens
> <module>[/<package>]=<target-module>(,<target-module>)*
> 
> So if a <package> is not specified, the entire module would be open
> for deep reflection at run time.
> 
> Being able to open an entire module with a single JVM option will
> ease the migration of existing java programs to the new modular
> JDK. Specifically, it will allow developers to get our programs up
> and running in "toleration" mode more quickly, and then tackle a
> fine-grained set of open packages on a per-module basis.
> 
> [1] 
> http://mail.openjdk.java.net/pipermail/jpms-spec-experts/2016-October/
000430.html
>
> 
- -- 

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