How does jpackage search for modules?

[Tobias Oelgarte]

Thank you Andy, for clarifying. I thought i was missing some detail. 
Guess, I will have to be a bit more patient. ;-)

/Tobias Oelgarte

On 25.02.19 22:20, Andy Herrick wrote:
> Tobias:
>
> After the latest fix (JDK-8217798: modular jar linking in jpackage) 
> the following now works:
>
> jpackage create-image --module 
> de.asysgmbh.app.test/de.asysgmbh.app.test.Main --module-path 
> /data/projects/javam/de.asysgmbh.app.test/target/modules ...
>
> will work fine, but
>
> jpackage create-image --module de.asysgmbh.app.test --main-class 
> de.asysgmbh.app.test.Main --module-path 
> /data/projects/javam/de.asysgmbh.app.test/target/modules ...
>
> will not work. (actually it will build but them not run, saying: 
> "module XXX does not have a ModuleMainClass attribute, use -m 
> <module>/<main-class>)
>
> In any case the latest EA does not work with modular jars, and a 
> future version will prohibit mixing --module with --main-class options.
>
> The help text will be re-written to clarify which options are used in 
> which use cases.
>
> /Andy
>
>
>
> On 2/25/2019 3:00 PM, Tobias Oelgarte wrote:
>> I'm wondering how jpackage searches for modules. I tried to build a 
>> very simple example (using Build 17 of jpackage), but jpackage always 
>> claims that the module can't be found.
>>
>> ~$ ./jpackage create-image \
>>     --output /data/projects/javam/de.asysgmbh.app.test/target/image \
>>     --name test \
>>     --main-class de.asysgmbh.app.test.Main \
>>     --module de.asysgmbh.app.test \
>>     --module-path 
>> /data/projects/javam/de.asysgmbh.app.test/target/modules
>> ~ $ Module de.asysgmbh.app.test does not exist.
>>
>> The modules directory contains the file 
>> "de.asysgmbh.app.test-1.0-SNAPSHOT.jar" including the 
>> module-info.class with the module named "de.asysgmbh.app.test".
>>
>>     module de.asysgmbh.app.test { ... }
>>
>> The following works just fine:
>>
>> ~$ java \
>>     --module-path 
>> /data/projects/javam/de.asysgmbh.app.test/target/modules \
>>     --module de.asysgmbh.app.test/de.asysgmbh.app.test.Main
>>
>