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https://issues.apache.org/jira/browse/DERBY-6945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16303348#comment-16303348
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Rick Hillegas commented on DERBY-6945:
--------------------------------------

Yet another variation on 2:

2'') As in 2', separate out org.apache.derby.jdbc and use reflection to break 
the compile-time linkages to derby.jar and derbyshared.jar. Put the isolated 
org.apache.derby.jdbc classes in a new micro-module called 
org.apache.derby.jdbc. On the one hand, I am reluctant to create tiny module 
splinters like this. On the other hand, this approach would break the engine 
and client's compile-time dependency on the java.naming module. Applications 
which get a Connection via DriverManager.getConnection() would not need to 
reference the org.apache.derby.jdbc classes and therefore they would not 
fault-in the 444K weight of the java.naming module.

> Re-package Derby as a collection of jigsaw modules
> --------------------------------------------------
>
>                 Key: DERBY-6945
>                 URL: https://issues.apache.org/jira/browse/DERBY-6945
>             Project: Derby
>          Issue Type: Improvement
>    Affects Versions: 10.13.1.2
>            Reporter: Rick Hillegas
>         Attachments: derby-6945-01-aa-remove_derbyPreBuild_dep.diff, 
> derby-6945-02-ab-newDerbySharedJar.diff, 
> derby-6945-02-ac-newDerbySharedJar.diff, derby-6945-03-aa-partitionTest.diff, 
> derby-6945-04-aa-moveRunClass.diff, jdeps.out.tar
>
>
> Once we commit to building with Java 9 (see DERBY-6856), we should consider 
> re-packaging Derby as a set of jigsaw modules. This would result in a 
> different set of release artifacts. This might be a good opportunity to 
> address the Tomcat artifactory issues raised by issue DERBY-6944.



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