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apache/causeway-app-simpleapp

This system is a Java-based application built on the Apache Causeway framework, serving as a modernized version of the Apache Isis platform. It implements a simple domain model using JPA and Spring Boot, featuring a web interface with REST and GraphQL endpoints. The codebase includes comprehensive test coverage and supports background processing and scheduled jobs.

52.6

Adequate · 3 August 2026

797

lines of production code

Java

primary language

1

bus factor · 10 authors in all

3

measurements over time

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How it got here

2019 · Migration to JPA and Apache Causeway

This period was dominated by the migration of the codebase from Apache Isis to Apache Causeway, including a comprehensive shift from JDO to JPA for data persistence. The work involved renaming the project, updating dependencies, and refactoring domain models and web applications to align with the new framework and Jakarta namespace.

10 changes

2020–2022 · Domain model and test infrastructure modernization

This period focused on refining the domain model by introducing new type annotations and restructuring the SimpleObject layout for better organization. Concurrently, the project upgraded its testing infrastructure by migrating to JUnit 5 and updating integration tests to align with modern Java and Spring Boot standards.

5 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 3 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 edf1e585f5 — 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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