Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
xMolecules
Search
Henning Schwentner
December 01, 2022
Programming
3
190
xMolecules
Living architecture documentation
Henning Schwentner
December 01, 2022
Tweet
Share
More Decks by Henning Schwentner
See All by Henning Schwentner
Domain-Driven Transformation
hschwentner
2
1.9k
Software Architecture
hschwentner
6
2.1k
Model Pollution
hschwentner
1
110
Domain-Driven Design (Tutorial)
hschwentner
13
22k
Value and Record Types
hschwentner
1
990
Domain Storytelling
hschwentner
4
2.4k
UNIX, Linux, and Command Line Basics
hschwentner
0
110
From Legacy to Cloud
hschwentner
0
170
Überzeugen
hschwentner
7
1.2k
Other Decks in Programming
See All in Programming
asdf-ecspresso作って 友達が増えた話 / Fujiwara Tech Conference 2025
koluku
0
3k
PicoRubyと暮らす、シェアハウスハック
ryosk7
0
260
知られざるDMMデータエンジニアの生態 〜かつてツチノコと呼ばれし者〜
takaha4k
3
1.2k
2024年のWebフロントエンドのふりかえりと2025年
sakito
1
200
Java Webフレームワークの現状 / java web framework at burikaigi
kishida
9
2.1k
Amazon ECS とマイクロサービスから考えるシステム構成
hiyanger
3
470
盆栽転じて家具となる / Bonsai and Furnitures
aereal
0
3.5k
CloudNativePGがCNCF Sandboxプロジェクトになったぞ! 〜CloudNativePGの仕組みの紹介〜
nnaka2992
0
210
Writing documentation can be fun with plugin system
okuramasafumi
0
110
SwiftUIで単方向アーキテクチャを導入して得られた成果
takuyaosawa
0
240
Kubernetes History Inspector(KHI)を触ってみた
bells17
0
180
Vue.jsでiOSアプリを作る方法
hal_spidernight
0
130
Featured
See All Featured
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Gamification - CAS2011
davidbonilla
80
5.1k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.4k
Raft: Consensus for Rubyists
vanstee
137
6.8k
The Pragmatic Product Professional
lauravandoore
32
6.4k
A better future with KSS
kneath
238
17k
Building Applications with DynamoDB
mza
93
6.2k
Art, The Web, and Tiny UX
lynnandtonic
298
20k
Code Reviewing Like a Champion
maltzj
521
39k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
251
21k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
29
1k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
132
33k
Transcript
Starring Directed By Presented by With
None
None
https://hschwentner.io
@hschwentner
! " # $
@hschwentner
BankAccount withdraw() deposit() Amount
BankAccount withdraw() deposit() Amount
@hschwentner Domain-Driven Design Eric Evans
@hschwentner Entity vs. Value - Identity - Life cycle -
Can be mutable - No identity - Always immutable Contract Map Name Length 12.5 m “John Miller”
Entity Value Object Aggregate Service Factory Repository Tactical Design
«Entity» BankAccount withdraw() deposit() «Value Object» Amount
«stereotype» Value Object «stereotype» Entity ??? «stereotype» Identity
xMolecules
None
Hexagonal Architecture Layerered Architecture Onion Architecture Clean Architecture
@hschwentner How To Express Architecture?
class Account { public void deposit(Amount amount) //... public void
withdraw(Amount amount) //... }
class AccountEntity { public void deposit(Amount amount) //... public void
withdraw(Amount amount) //... }
class Account extends Entity { public void deposit(Amount amount) //...
public void withdraw(Amount amount) //... }
class Account extends Entity<IBAN> { public void deposit(Amount amount) //...
public void withdraw(Amount amount) //... }
import org.jmolecules.ddd.types.Entity; class Account extends Entity<IBAN> { public void deposit(Amount
amount) //... public void withdraw(Amount amount) //... }
@Entity class Account { public void deposit(Amount amount) //... public
void withdraw(Amount amount) //... }
import org.jmolecules.ddd.annotation.Entity; @Entity class Account { public void deposit(Amount amount)
//... public void withdraw(Amount amount) //... }
@hschwentner How To Express Architecture?
class Account { public void deposit(Amount amount) //... public void
withdraw(Amount amount) //... }
class AccountEntity { public void deposit(Amount amount) //... public void
withdraw(Amount amount) //... }
class Account : Entity { public void deposit(Amount amount) //...
public void withdraw(Amount amount) //... }
class Account : Entity<IBAN> { public void deposit(Amount amount) //...
public void withdraw(Amount amount) //... }
using NMolecules.DDD; class Account : Entity<IBAN> { public void deposit(Amount
amount) //... public void withdraw(Amount amount) //... }
[Entity] class Account { public void deposit(Amount amount) //... public
void withdraw(Amount amount) //... }
using NMolecules.DDD; [Entity] class Account { public void deposit(Amount amount)
//... public void withdraw(Amount amount) //... }
[Entity] class Account { [Identity] public IBAN IBAN { get;
} public void deposit(Amount amount) //... public void withdraw(Amount amount) //... }
@hschwentner How To Express Architecture?
class Account { public function deposit(Amount $amount) //... public function
withdraw(Amount $amount) //... }
class AccountEntity { public function deposit(Amount $amount) //... public function
withdraw(Amount $amount) //... }
class Account extends Entity { public function deposit(Amount $amount) //...
public function withdraw(Amount $amount) //... }
/** * @extends Entity<IBAN> */ class Account extends Entity {
public function deposit(Amount $amount) //... public function withdraw(Amount $amount) //... }
use PHPMolecules\DDD\Type\Entity; class Account extends Entity { public function deposit(Amount
$amount) //... public function withdraw(Amount $amount) //... }
#[Entity] class Account { public function deposit(Amount $amount) //... public
function withdraw(Amount $amount) //... }
use PHPMolecules\DDD\Annotation\Entity; #[Entity] class Account { public function deposit(Amount $amount)
//... public function withdraw(Amount $amount) //... }
@hschwentner Why Express Architecture?
Documentation Verification Boilerplate Reduction
@hschwentner Documentation
@hschwentner ! " «Entity» XXX «Value Object» YYY ??
None
@hschwentner Verification
@hschwentner value Architecture Rules entity allowed forbidden
None
@AnalyzeClasses(packagesOf = ArchitectureTests.class) class ArchitectureTests { @ArchTest ArchRule ddd =
JMoleculesDddRules.all(); }
None
PHPStan Psalm Phan PHPArkitect PHPArch
@hschwentner Boilerplate Reduction
@javax.persistence.Entity class BankAccount { /*...*/ } @javax.persistence.???.Embeddable class Amount {
/*...*/ }
@hschwentner jmolecules-bytebuddy jmolecules-jpa jmolecules-spring jmolecules-jackson jmolecules-intellij
@hschwentner Boilerplate Reduction
???
@hschwentner nmolecules-ef nmolecules-roslyn nmolecules-rider
@hschwentner Boilerplate Reduction
/** * @ORM\Entity * @ORM\Table(name="bank_accounts") */ class BankAccount { /**
* @ORM\Id * @ORM\GeneratedValue * @ORM\Column(type="integer") */ private IBAN iban; /*...*/ }
@hschwentner phpmolecules-doctrine phpmolecules-symphony phpmolecules-serializer phpmolecules-phpstorm
@hschwentner Installation
<dependency> <groupId>org.jmolecules</groupId> <artifactId>jmolecules-ddd</artifactId> <version>1.4.0</version> </dependency>
@hschwentner Installation
> dotnet add package NMolecules.DDD
// Install NMolecules.DDD as a Cake Addin #addin nuget:?package=NMolecules.DDD&version=0.2.1 //
Install NMolecules.DDD as a Cake Tool #tool nuget:?package=NMolecules.DDD&version=0.2.1
@hschwentner Installation
$ composer require --dev xmolecules/phpmolecules
@hschwentner LeasingNinja.io
None
Bibliography Evans, Eric. Domain-Driven Design: Tackling Complexity in the Heart
of Software. Boston: Addison-Wesley, 2004. Hofer, Stefan and Henning Schwentner. Domain Storytelling: a Collaborative, Visual, and Agile Way to Develop Domain-Driven Software. Boston: Addison-Wesley, 2022.
None
Henning Schwentner ⌂ https://hschwentner.io @hschwentner
[email protected]