xMolecules

Living architecture documentation

Transcript

1. Starring Directed By Presented by With
3. Java old! C# ABAP PHP Python
5. https://hschwentner.io
6. @hschwentner
7. 👨💻‍‍‍ 👩💻‍‍‍ 👨💼‍‍‍ 💵
8. @hschwentner
9. BankAccount withdraw() deposit() Amount
10. BankAccount withdraw() deposit() Amount
11. @hschwentner Domain-Driven Design Eric Evans
12. @hschwentner Entity vs. Value - Identity - Life cycle - Can be mutable - No identity - Always immutable Contract Map Name Amount Length 12.5 m $ 100.00 “John Miller”
13. Entity Value Object Aggregate Service Factory Repository Tactical Design
14. «Entity» BankAccount withdraw() deposit() «Value Object» Amount
15. «stereotype» Value Object «stereotype» Entity ???
16. xMolecules
17. @hschwentner How To Express Architecture?
18. class Account { public void deposit(Amount amount) //... public void withdraw(Amount amount) //... }
19. class AccountEntity { public void deposit(Amount amount) //... public void withdraw(Amount amount) //... }
20. class Account extends Entity<IBAN> { public void deposit(Amount amount) //... public void withdraw(Amount amount) //... }
21. import org.jmolecules.ddd.types.Entity; class Account extends Entity<IBAN> { public void deposit(Amount amount) //... public void withdraw(Amount amount) //... }
22. @Entity class Account { public void deposit(Amount amount) //... public void withdraw(Amount amount) //... }
23. import org.jmolecules.ddd.annotation.Entity; @Entity class Account { public void deposit(Amount amount) //... public void withdraw(Amount amount) //... }
24. @hschwentner Why Express Architecture?
25. Documentation Verification Boilerplate Reduction
26. @hschwentner Documentation
27. @hschwentner 👨💻‍‍‍ 👩💻‍‍‍ «Entity» XXX «Value Object» YYY ??
29. @hschwentner Verification
30. @hschwentner value Architecture Rules entity Acyclic Dependency Principle allowed forbidden
32. @AnalyzeClasses(packagesOf = ArchitectureTests.class) class ArchitectureTests { @ArchTest ArchRule ddd = JMoleculesDddRules.all(); }
33. @hschwentner Boilerplate Reduction
34. @javax.persistence.Entity class BankAccount { /*...*/ } @javax.persistence.???.Embeddable class Amount { /*...*/ }
35. @hschwentner jmolecules-bytebuddy jmolecules-jpa jmolecules-spring jmolecules-jackson jmolecules-intellij
40. Henning Schwentner ⌂ https://hschwentner.io @hschwentner ✉ hs@wps.de