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xmolecules/jmolecules

This system is a Java and Kotlin library that provides a comprehensive set of annotations and marker interfaces for modeling architectural styles and domain-driven design concepts. It supports multiple patterns including CQRS, Hexagonal, Layered, and Onion architectures, as well as core DDD building blocks like entities, aggregates, and domain events. The library enables developers to explicitly mark and structure their code to enforce consistent architectural boundaries and domain modeling practices.

48.7

Weak · 4 August 2026

3.2k

lines of production code

Java

with Kotlin

1

bus factor · 18 authors in all

4

measurements over time

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How it got here

2020 · DDD and architecture style annotations

This period focused on expanding the jMolecules library with comprehensive annotations for Domain-Driven Design and various architectural styles. New modules were introduced to support CQRS, Hexagonal, Layered, and Onion architectures, alongside foundational DDD building blocks like AggregateRoot and BoundedContext. The work established a standardized way to model domain concepts and enforce architectural boundaries through Java and Kotlin annotations.

7 changes

2021–2025 · Architecture and DDD feature expansion

This period focused on expanding the library's architectural and domain-driven design capabilities, introducing new annotations for CQRS, Hexagonal Architecture, and Kotlin support. The team also standardized the Maven build environment and introduced a new stereotype meta-annotation to support structured configuration.

6 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 4 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 20d2636beb — the exact code this score is about.
  • Scored under rubric rubric-2026.08.19. Score the same commit under that rubric and you get the same number.
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