buckpal VS jmolecules

This is my filtered list of open-source projects that I use for learning: https://github.com/codurance/academy-walking-skeleton/blob/main/simpleWebservice/src/main/java/com/kata/SimpleWebservice/UserRepository.java https://github.com/bwajtr/java-persistence-frameworks-comparison https://github.com/thombergs/code-examples/tree/master/spring-boot/spring-boot-testing https://github.com/codurance/all-aboard-backend https://github.com/codurance/gandalf https://github.com/codurance/hotel-kata-boot https://github.com/codurance/hotel-kata-monolith https://github.com/codurance/hotel-kata-raw https://github.com/codurance/mementor https://github.com/codurance/pouch https://github.com/codurance/Retropolis-BE https://github.com/codurance/SalarySlipKata https://github.com/codurance/sessionize https://github.com/codurance/task-list https://github.com/ddd-by-examples/factory https://github.com/doctore/Spring5Microservices https://github.com/eventuate-examples/eventuate-examples-java-customers-and-orders https://github.com/gitpushforcemain/nerdy-jokes-app https://github.com/gothinkster/spring-boot-realworld-example-app https://github.com/gtiwari333/spring-boot-web-application-sample https://github.com/hamvocke/spring-testing https://github.com/hmcts/spring-boot-template https://github.com/IBM/template-java-spring https://github.com/isd-soft https://github.com/jitterted/mobreg https://github.com/jref/covid-19-demo https://github.com/jref/vaccination-start https://github.com/lpalma/merlin https://github.com/mechero/full-reactive-stack https://github.com/mohamed-taman/Springy-Store-Microservices https://github.com/nelkinda https://github.com/OlgaMaciaszek/spring-cloud-netflix-demo https://github.com/pavelfomin/spring-boot-rest-example https://github.com/PravSonawane/fakes-over-mocks https://github.com/remal/java-tools https://github.com/remal/oss-template-java-gradle https://github.com/pavelfomin/resume/blob/master/resume.html.pdf https://github.com/richardjwild/how-to-java https://github.com/rieckpil/java-testing-ecosystem https://github.com/rieckpil/testing-spring-boot-applications-masterclass https://spring.io/guides https://www.javaguides.net/2022/03/spring-boot-unit-testing-service-layer.html?spref=tw https://github.com/spring-petclinic https://github.com/stratospheric-dev/stratospheric https://github.com/tericcabrel/spring-user-management https://github.com/thombergs/buckpal https://github.com/Throyer/springboot-api-rest-example https://github.com/TomSpencerLondon/Quiz https://github.com/vladmihalcea/high-performance-java-persistence https://github.com/Vukan-Markovic/Distributed-information-systems https://github.com/yacekmm/testingDemo https://github.com/kamaruzzaman https://github.com/evrentan?tab=repositories https://github.com/ConstantinKV/demo-sca-provider https://github.com/sqshq/piggymetrics https://github.com/ESchouten/CleanArchitecture https://github.com/CodelyTV/java-ddd-example https://github.com/lsoares/clean-architecture-sample https://github.com/mattia-battiston/clean-architecture-example https://github.com/techyourchance https://github.com/ttulka/ddd-example-ecommerce-microservices https://github.com/ttulka/ddd-example-ecommerce https://github.com/victorrentea/clean-architecture https://github.com/victorrentea/clean-code-java https://github.com/victorrentea/ddd https://github.com/victorrentea/integration-testing-spring

We need rules to enforce boundaries, and they need to be treated like tests: when tests fail, one must fix them. Likewise, when one breaks a rule, one must fix it. ArchUnit is a tool to create and enforce rules. One configures the rules and verifies them as tests. Unfortunately, the configuration is time-consuming and must constantly be maintained to provide value. Here's a snippet for a sample application following the Hexagonal architecture principle:

Spring Modulith is the successor of Oliver Drotbohm's Moduliths project (with a trailing S). It uses both ArchUnit and jMolecules. At the time of this writing, it's experimental.

You could move towards modeling your code around DDD building blocks (like aggregates etc.) and declare those concepts in code explicitly using jMolecules types. There is a dedicated jMolecules Integrations ByteBuddy Plugin, that would then add the necessary boilerplate code and default mappings required by the expressed concept. This makes the code shown here a fully working JPA model. You can argue that the lack of JPA oddities is odd itself in the first place but I like the idea of expressing the architectural concept explicitly and the technology integration completely flowing from that.