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Description

Using Maven revision to manage multi-module versions.

  • Follow the CONTRIBUTING Guide.
  • Make your Pull Request title in the https://www.conventionalcommits.org/ specification.
    • Important Prefixes for release-please:
      • fix: which represents bug fixes, and correlates to a SemVer patch.
      • feat: represents a new feature, and correlates to a SemVer minor.
      • feat!:, or fix!:, refactor!:, etc., which represent a breaking change (indicated by the !) and will result in a SemVer major.
  • Ensure the tests pass
  • Appropriate READMEs were updated (if necessary)

Fixes #<issue_number_goes_here> 🦕

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Summary of Changes

Hello @ChenKangQiang, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refactors the project's Maven configuration to implement a more robust and centralized version management strategy. It transitions from hardcoded parent versions in individual module pom.xml files to using a shared ${revision} property defined in the root pom.xml. Additionally, the flatten-maven-plugin is integrated to streamline the effective POM for release processes, ensuring consistent and clean artifact metadata. These changes enhance maintainability and prepare the project for more efficient multi-module versioning and releases.

Highlights

  • Centralized Version Management: The project's parent version in all pom.xml files has been replaced with a Maven property ${revision}, centralizing version management.
  • Version Property Definition: The root pom.xml now defines a revision property, which holds the actual version string, allowing for easier updates across all modules.
  • Integration of Flatten Maven Plugin: The flatten-maven-plugin has been introduced and configured in the root pom.xml to manage the effective POM, specifically for OSSRH (OSS Repository Hosting) compatibility, which is crucial for releasing artifacts.
  • Improved Parent POM Resolution: Many child pom.xml files now explicitly include <relativePath> to their parent POM, improving build stability and clarity in multi-module setups.
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Code Review

This pull request is a great improvement, centralizing version management for this multi-module project by using the ${revision} property. This will make future version bumps much easier and less error-prone. The introduction of the flatten-maven-plugin is the correct approach to ensure the published artifacts have resolved versions. The changes are applied consistently across all modules. I have one important suggestion regarding the configuration of the flatten-maven-plugin to ensure the build lifecycle executes correctly.

pom.xml Outdated
<goals>
<goal>flatten</goal>
</goals>
<phase>process-resources</phase>
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high

The flatten goal is currently bound to the process-resources phase. When using flattenMode 'ossrh', the plugin removes significant parts of the POM, including the <build> section, to prepare it for deployment. Running this so early in the lifecycle can break subsequent phases like compile, test, and package because their plugin configurations would be missing.

To fix this, the flatten goal should be executed during the install phase. This ensures that the project is fully built with its complete POM before the POM is 'flattened' for installation into the local repository or for deployment.

                            <phase>install</phase>

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