Problem
Potential Problems:- Inherited code with no clear structure: Rule classes received from another team or extracted from a deployed JAR often have no build system, inconsistent packaging, or missing annotations, making them impossible to deploy without significant manual restructuring.
- No path from decompiled code to a deployable module: Decompiling a JAR gives you Java files, but not a working module. The gap between raw source and a properly structured, buildable package is wide and largely undocumented.
- Risk of breaking imports and references during refactoring: Renaming packages, changing base classes, and reorganising files all carry the risk of introducing compilation errors, and doing this manually across many files is error-prone.
- Missing module configuration: Rule registrations, build scripts, and module metadata are often absent from inherited or decompiled source, and recreating them manually requires deep knowledge of the Fluent module format.
- No test coverage for existing rules: Code brought in from external sources rarely comes with tests, leaving the team unable to validate behaviour before deployment.
- Inconsistency between deployed rules and local source: Without cross-referencing what is deployed against what exists locally, teams can't be confident they are working with the right version of the code.
You have Java rule classes from another team or a decompiled JAR, but they're not in Fluent Commerce module format. You need a buildable, deployable module.
Solution Overview
Onboarding existing source code into a proper Fluent module begins with pointing the tool at the code that needs to be restructured, whether that is a decompiled JAR directory, a folder of loose Java files, or a project using a non-standard build system. The tool analyses what it finds, identifies all the rule classes present by looking for the patterns that define them, and assesses what kind of restructuring will be needed.Before making any changes, the tool produces a detailed plan showing exactly what it intends to do. This includes which files will move and where, what code changes are required such as package renames, base class corrections, or missing annotations, and a risk assessment highlighting anything that could cause problems. Nothing is changed until this plan has been reviewed and approved, giving the team full visibility and control before any restructuring begins.Once approved, the tool carries out the restructuring in full. It creates the correct Maven multi-module directory layout, moves and repackages the Java files, fixes any structural issues it identified, and generates all the supporting files needed for a complete module, including the rule registration configuration, build scripts, and project metadata. Test skeletons are also generated for any rules that currently have no test coverage.With the structure in place, the module is validated and a build is attempted to confirm everything compiles correctly. The tool also cross-references the restructured rules against what is currently deployed, so the team has a clear picture of how the local source aligns with the live environment.The result is a clean, buildable, deployable module produced from whatever form the original source arrived in, with a transparent and reviewable process at every step.Solution
