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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6645) Switch to Maven for building Apache Derby
Date Sun, 16 Dec 2018 18:07:00 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16722534#comment-16722534

Rick Hillegas commented on DERBY-6645:

Mavenizing the build should be much easier now that Derby has been converted into JPMS modules
via the work on DERBY-6945. At a high level, you will need a pom for each of the child directories
of trunk/java, most of which correspond to production modules. It should be straightforward
to convert the build.xml scripts in those directories into poms.

The devil will be in details such as making sure that the top level pom fires off child poms
in the correct order.

I recently revamped how we generate security policies. That work is tracked by DERBY-3547.
The policy files are described by trunk/java/org.apache.derby.engine/org/apache/derby/security/securityPolicies.xml.
They are generated by the build tool trunk/java/build/org/apache/derbyBuild/SecurityPolicyGenerator.java,
which runs when the top level build.xml script calls its generateSecurityPolicies target.
I think that "mojo" is the name for the maven equivalent of an ant build tool.

> Switch to Maven for building Apache Derby
> -----------------------------------------
>                 Key: DERBY-6645
>                 URL: https://issues.apache.org/jira/browse/DERBY-6645
>             Project: Derby
>          Issue Type: Improvement
>          Components: Build tools
>    Affects Versions:
>            Reporter: Moritz Hoffmann
>            Priority: Major
>         Attachments: DERBY-6645_v1.patch
> For a new user building Derby is very hard. It does not follow established Java project
structures and requires a lot of prior knowledge. Also the documentation is rather short.
Especially running the tests is non-intuitive at the beginning. Thus, I propose that Derby
switches to building using Maven and restructures its components in a cleaner way. Testing
should be revised to produce reproducible results. This would make development and testing
much easier and more user-friendly.

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