Software-Hygiene

Jens Himmelreich
Jens HimmelreichSoftwareentwickler at neuland - Büro für Informatik
••
S O F T W A R E 
 H Y G I E N E X P D A Y S S T U T T G A R T 2 0 1 7
oder was man von Blutgruppen über die Strukturierung von Software lernen kann
sven bange jens himmelreich N E U L A N D - B Ü R O F Ü R I N F O R M A T I K

 ARCHITEKTUR AGILE

ARCHITEKTDER EINSAME
Plan
ARCHITEKT
ARCHITEKT
ARCHITEKTUR evolvierend, inkrementell
Werte
Muster
Werte und Muster werden global kommuniziert und machen lokal handlungsfähig.
Big Ball of Mud
sauber einfach strukturiert aufgeräumt willkürlich chaotisch wuchernd schmutzig
1 8 4 8 Ignaz Semmelweis
„Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ H Y G I E N E
„Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ E R K E N N U N G
Bedside-Test A B 0
A B AB0
A B AB0 0 A B AB Spender Empfänger x xx xx x x xx
Serafol® ABO Anti-A Anti-B
Serafol® AB0 Anti-A Anti-B
Serafol® AB0 Anti-A Anti-B
Serafol® AB0 Anti-BAnti-A
Big Ball of Mud
Johannes Siedersleben sd&m Q U A S A R
„Software, die sich unterschiedlich schnell ändert, wird in unterschiedliche Module aufgeteilt.“ David Parnas
A B AB0
A T AT0
universell verfügbare Software A T AT0
Anwendungs-Software A T AT0
Technische Software A T AT0
Big Ball of Mud A T AT0
Repräsentation A T AT/R0
A T R0
A T R0 0 A T R Aufgerufener Aufrufer x xx xx x x xx
Quasar Quasar® AT0 Anti-TAnti-A
„Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ H Y G I E N E
„Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ B E H A N D L U N G
TREN ∙ NUNG
Domain Driven Design Eric Evans, Vaughn Vernon
I. Bounded Context A B C
II. A-Software ∙ T-Software
III. Domain Model
Trennwand
R-Software
Hexagon
Hexagon Port and Adapter Application Domain
Hexagon WebController AppService Aggregate Repository EntityValueObject DomainServiceDomainEvent RepositoryImpl WebRequest Port and Adapter Application Domain JDBCObject
A-Software WebController AppService Aggregate Repository EntityValueObject DomainServiceDomainEvent RepositoryImpl WebRequest Port and Adapter Application Domain JDBCObject Aggregate Repository EntityValueObject DomainServiceDomainEvent
T-Software WebController AppService Aggregate Repository EntityValueObject DomainServiceDomainEvent RepositoryImpl WebRequest Port and Adapter Application Domain JDBCObject WebRequest JDBCObject
R-Software WebController AppService Aggregate Repository EntityValueObject DomainServiceDomainEvent RepositoryImpl WebRequest Port and Adapter Application Domain JDBCObject WebController AppService RepositoryImpl
B E I S P I E L
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
@Controller public class WebController { @Autowired private GreetingApplicationService greetingApplicationService; @RequestMapping("/") public String home(Model model) { GreetingData greeting = greetingApplicationService.welcomePeople(); model.addAttribute("salutation", greeting.getSalutation()); model.addAttribute("name", greeting.getName()); return "home"; } }
@Controller public class WebController { @Autowired private GreetingApplicationService greetingApplicationService; @RequestMapping("/") public String home(Model model) { GreetingData greeting = greetingApplicationService.welcomePeople(); model.addAttribute("salutation", greeting.getSalutation()); model.addAttribute("name", greeting.getName()); return "home"; } }
@Controller public class WebController { @Autowired private GreetingApplicationService greetingApplicationService; @RequestMapping("/") public String home(Model model) { GreetingData greeting = greetingApplicationService.welcomePeople(); model.addAttribute("salutation", greeting.getSalutation()); model.addAttribute("name", greeting.getName()); return "home"; } }
@Controller public class WebController { @Autowired private GreetingApplicationService greetingApplicationService; @RequestMapping("/") public String home(Model model) { GreetingData greeting = greetingApplicationService.welcomePeople(); model.addAttribute("salutation", greeting.getSalutation()); model.addAttribute("name", greeting.getName()); return "home"; } }
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
@Service public class GreetingApplicationService { @Autowired private GreetingRepository repository; public GreetingData welcomePeople() { Greeting greeting = repository.firstGreeting(); GreetingData greetingData = new GreetingData(greeting); return greetingData; } }
@Service public class GreetingApplicationService { @Autowired private GreetingRepository repository; public GreetingData welcomePeople() { Greeting greeting = repository.firstGreeting(); GreetingData greetingData = new GreetingData(greeting); return greetingData; } }
@Service public class GreetingApplicationService { @Autowired private GreetingRepository repository; public GreetingData welcomePeople() { Greeting greeting = repository.firstGreeting(); GreetingData greetingData = new GreetingData(greeting); return greetingData; } }
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
@Repository public class JpaGreetingRepository implements GreetingRepository { @Autowired private HibernateGreetingRepository hibernateGreetingRepository; @Override public Greeting firstGreeting() { Iterable<GreetingTable> rows = hibernateGreetingRepository.findAll(); GreetingTable r = rows.iterator().next(); Greeting greeting = new Greeting( new Salutation(r.getSalutation()), new Name(r.getName())); return greeting; } }
@Repository public class JpaGreetingRepository implements GreetingRepository { @Autowired private HibernateGreetingRepository hibernateGreetingRepository; @Override public Greeting firstGreeting() { Iterable<GreetingTable> rows = hibernateGreetingRepository.findAll(); GreetingTable r = rows.iterator().next(); Greeting greeting = new Greeting( new Salutation(r.getSalutation()), new Name(r.getName())); return greeting; } }
@Repository public class JpaGreetingRepository implements GreetingRepository { @Autowired private HibernateGreetingRepository hibernateGreetingRepository; @Override public Greeting firstGreeting() { Iterable<GreetingTable> rows = hibernateGreetingRepository.findAll(); GreetingTable r = rows.iterator().next(); Greeting greeting = new Greeting( new Salutation(r.getSalutation()), new Name(r.getName())); return greeting; } }
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
@SpringBootApplication @EnableAutoConfiguration public class XpdemoApplication { public static void main(String[] args) { SpringApplication.run(XpdemoApplication.class, args); } }
@SpringBootApplication @EnableAutoConfiguration public class XpdemoApplication { public static void main(String[] args) { SpringApplication.run(XpdemoApplication.class, args); } }
├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
„Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ P R Ä V E N T I O N
Bedside-Test your Code! Quasar® AT0 Anti-TAnti-A
F R A G E N ?
Q U E L L E N https://www.flickr.com/photos/23967095@N00/ Vaughn Vernon, Implementing Domain Driven Design Johannes Siedersleben, Moderne Softwarearchitektur http://www.laputan.org/mud/
1 of 82

Software-Hygiene

••
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Software

Software-Hygiene oder was man von Blutgruppen über die Strukturierung von Software lernen kann Agile Softwarearchitektur erschöpft sich oft im Begriff ‚inkrementell‘. Agile Methoden setzen Werte an die Stelle von Prozessen. Werte leiten das freie Handeln. Was ist das Pendant auf der Seite der Architektur? Architekturen können inkrementell entstehen, wenn sie durch Begriffe und Metaphern orientiert sind. Das meist rezipierte Architekturkonzept im agilen Kontext ist Domain Driven Design (DDD). Es erweist sich als hilfreicher Kompass in Software-Projekten, die auf die Gestaltung von strukturierten Anwendungskernen abzielen. Wir stellen mit Quasar eine weitere Methode vor, die die Trennung von technischen und fachlichen Komponenten (Software-Hygiene) ins Zentrum stellt. Quasar hilft durch die Metapher der Blutgruppen bei einer sauberen Strukturierung von Anwendungen. Wir werden die zentralen Begriffe von Quasar erläutern. Mit ihrer Hilfe machen wir einen Aspekt des DDD sichtbar, der dort vorausgesetzt, aber nicht als „first class citizen“ verhandelt wird. Die Zuhörerin sollte am Ende der Session in der Lage sein, einen auf DDD basierenden Anwendungskern zu entwickeln, der fachliche und technische Aspekte strikt trennt und das Infektionsrisiko minimiert. Präsentation von Sven Bange und Jens Himmelreich, gehalten auf den XPDays 2017 in Stuttgart.

Jens Himmelreich
Jens HimmelreichSoftwareentwickler at neuland - Büro für Informatik

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Software-Hygiene

  • 1. S O F T W A R E 
 H Y G I E N E X P D A Y S S T U T T G A R T 2 0 1 7
  • 2. oder was man von Blutgruppen über die Strukturierung von Software lernen kann
  • 3. sven bange jens himmelreich N E U L A N D - B Ü R O F Ü R I N F O R M A T I K
  • 10. Werte
  • 12. Werte und Muster werden global kommuniziert und machen lokal handlungsfähig.
  • 13. Big Ball of Mud
  • 15. 1 8 4 8 Ignaz Semmelweis
  • 16. „Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ H Y G I E N E
  • 17. „Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ E R K E N N U N G
  • 25. Big Ball of Mud
  • 27. „Software, die sich unterschiedlich schnell ändert, wird in unterschiedliche Module aufgeteilt.“ David Parnas
  • 33. Big Ball of Mud A T AT0
  • 38. „Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ H Y G I E N E
  • 39. „Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ B E H A N D L U N G
  • 41. Domain Driven Design Eric Evans, Vaughn Vernon
  • 43. II. A-Software ∙ T-Software
  • 50. A-Software WebController AppService Aggregate Repository EntityValueObject DomainServiceDomainEvent RepositoryImpl WebRequest Port and Adapter Application Domain JDBCObject Aggregate Repository EntityValueObject DomainServiceDomainEvent
  • 53. B E I S P I E L
  • 54. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 55. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 56. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 57. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 58. @Controller public class WebController { @Autowired private GreetingApplicationService greetingApplicationService; @RequestMapping("/") public String home(Model model) { GreetingData greeting = greetingApplicationService.welcomePeople(); model.addAttribute("salutation", greeting.getSalutation()); model.addAttribute("name", greeting.getName()); return "home"; } }
  • 59. @Controller public class WebController { @Autowired private GreetingApplicationService greetingApplicationService; @RequestMapping("/") public String home(Model model) { GreetingData greeting = greetingApplicationService.welcomePeople(); model.addAttribute("salutation", greeting.getSalutation()); model.addAttribute("name", greeting.getName()); return "home"; } }
  • 60. @Controller public class WebController { @Autowired private GreetingApplicationService greetingApplicationService; @RequestMapping("/") public String home(Model model) { GreetingData greeting = greetingApplicationService.welcomePeople(); model.addAttribute("salutation", greeting.getSalutation()); model.addAttribute("name", greeting.getName()); return "home"; } }
  • 61. @Controller public class WebController { @Autowired private GreetingApplicationService greetingApplicationService; @RequestMapping("/") public String home(Model model) { GreetingData greeting = greetingApplicationService.welcomePeople(); model.addAttribute("salutation", greeting.getSalutation()); model.addAttribute("name", greeting.getName()); return "home"; } }
  • 62. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 63. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 64. @Service public class GreetingApplicationService { @Autowired private GreetingRepository repository; public GreetingData welcomePeople() { Greeting greeting = repository.firstGreeting(); GreetingData greetingData = new GreetingData(greeting); return greetingData; } }
  • 65. @Service public class GreetingApplicationService { @Autowired private GreetingRepository repository; public GreetingData welcomePeople() { Greeting greeting = repository.firstGreeting(); GreetingData greetingData = new GreetingData(greeting); return greetingData; } }
  • 66. @Service public class GreetingApplicationService { @Autowired private GreetingRepository repository; public GreetingData welcomePeople() { Greeting greeting = repository.firstGreeting(); GreetingData greetingData = new GreetingData(greeting); return greetingData; } }
  • 67. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 68. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 69. @Repository public class JpaGreetingRepository implements GreetingRepository { @Autowired private HibernateGreetingRepository hibernateGreetingRepository; @Override public Greeting firstGreeting() { Iterable<GreetingTable> rows = hibernateGreetingRepository.findAll(); GreetingTable r = rows.iterator().next(); Greeting greeting = new Greeting( new Salutation(r.getSalutation()), new Name(r.getName())); return greeting; } }
  • 70. @Repository public class JpaGreetingRepository implements GreetingRepository { @Autowired private HibernateGreetingRepository hibernateGreetingRepository; @Override public Greeting firstGreeting() { Iterable<GreetingTable> rows = hibernateGreetingRepository.findAll(); GreetingTable r = rows.iterator().next(); Greeting greeting = new Greeting( new Salutation(r.getSalutation()), new Name(r.getName())); return greeting; } }
  • 71. @Repository public class JpaGreetingRepository implements GreetingRepository { @Autowired private HibernateGreetingRepository hibernateGreetingRepository; @Override public Greeting firstGreeting() { Iterable<GreetingTable> rows = hibernateGreetingRepository.findAll(); GreetingTable r = rows.iterator().next(); Greeting greeting = new Greeting( new Salutation(r.getSalutation()), new Name(r.getName())); return greeting; } }
  • 72. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 73. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 74. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 75. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 76. @SpringBootApplication @EnableAutoConfiguration public class XpdemoApplication { public static void main(String[] args) { SpringApplication.run(XpdemoApplication.class, args); } }
  • 77. @SpringBootApplication @EnableAutoConfiguration public class XpdemoApplication { public static void main(String[] args) { SpringApplication.run(XpdemoApplication.class, args); } }
  • 78. ├── java │   └── de.neuland.xpdemo │   ├── XpdemoApplication.java │   ├── application │   │   ├── GreetingApplicationService.java │   │   └── GreetingData.java │   ├── domain.model │   │  ├── Greeting.java │   │ ├── GreetingInterest.java │   │ ├── GreetingRepository.java │   │ ├── Name.java │   │ └── Salutation.java │   └── port.adapter │   ├── persistence │   │   ├── GreetingTable.java │   │   ├── HibernateGreetingRepository.java │   │   └── JpaGreetingRepository.java │   └── web │   └── WebController.java └── resources ├── application.properties ├── static └── templates └── home.html
  • 79. „Erkennung, Behandlung und Prävention
 von Infektionskrankheiten“ P R Ä V E N T I O N
  • 81. F R A G E N ?
  • 82. Q U E L L E N https://www.flickr.com/photos/23967095@N00/ Vaughn Vernon, Implementing Domain Driven Design Johannes Siedersleben, Moderne Softwarearchitektur http://www.laputan.org/mud/