Applications for --limit-modules?

Nicolai Parlog nipa at codefx.org
Mon Jan 30 13:22:01 UTC 2017


 Hi Alan.

>> java -p mods --lomit-modules foo -m bar
> This limits the set of observable modules to `bar` plus the
> transitive closure of `foo`.

Ah, now I get it.

You originally wrote:

> The set of observable modules is the the transitive closure of the 
> modules you specify to --limit-modules plus any modules that you 
> specify to --add-modules or -m (for the main/initial module).

Now I see you meant:

	obs = closure( { --limit-modules} ) + --add-modules + --module

I understood:

	obs = closure( { --limit-modules + --add-modules + --module } )

:)

 so long ... Nicolai



On 28.01.2017 20:32, Alan Bateman wrote:
> On 28/01/2017 18:39, Nicolai Parlog wrote:
> 
>> Hi Alan,
>> 
>> thanks for your reply. Yes testing is a good example, didn't have
>> that idea. So testing and services, then?
> Yes, and for service providers then you might specify one or two
> to --limit-modules when converging on the set of service provide
> modules to explicit link into a run-time image.
> 
> 
>> : Based on my observations that is not the case. At least the
>> initial module is _not_ used as a root module to determine the
>> universe of observable modules. This only works if bar is in
>> foo's transitive closure:
>> 
>> java -p mods --lomit-modules foo -m bar
> This limits the set of observable modules to `bar` plus the
> transitive closure of `foo`. This will fail immediately if `bar`
> transitively depends on a module that it's in the foo++ set. You
> might need to work through a few examples to convince yourself of
> course.
> 
> -Alan
> 

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