$30 off During Our Annual Pro Sale. View Details »
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
xMolecules
Search
Henning Schwentner
December 01, 2022
Programming
3
260
xMolecules
Living architecture documentation
Henning Schwentner
December 01, 2022
Tweet
Share
More Decks by Henning Schwentner
See All by Henning Schwentner
Software Architecture
hschwentner
6
2.4k
Model Pollution
hschwentner
1
220
Event Storming
hschwentner
3
1.2k
Domain-Driven Design (Tutorial)
hschwentner
13
22k
Domain-Driven Transformation
hschwentner
2
2.1k
Value and Record Types
hschwentner
1
1.1k
Domain Storytelling
hschwentner
4
2.7k
UNIX, Linux, and Command Line Basics
hschwentner
0
170
From Legacy to Cloud
hschwentner
0
220
Other Decks in Programming
See All in Programming
TestingOsaka6_Ozono
o3
0
170
AI時代を生き抜く 新卒エンジニアの生きる道
coconala_engineer
1
400
FluorTracer / RayTracingCamp11
kugimasa
0
250
ZJIT: The Ruby 4 JIT Compiler / Ruby Release 30th Anniversary Party
k0kubun
0
250
ゆくKotlin くるRust
exoego
1
140
Pythonではじめるオープンデータ分析〜書籍の紹介と書籍で紹介しきれなかった事例の紹介〜
welliving
2
510
著者と進める!『AIと個人開発したくなったらまずCursorで要件定義だ!』
yasunacoffee
0
150
Rediscover the Console - SymfonyCon Amsterdam 2025
chalasr
2
190
愛される翻訳の秘訣
kishikawakatsumi
3
340
DevFest Android in Korea 2025 - 개발자 커뮤니티를 통해 얻는 가치
wisemuji
0
170
組み合わせ爆発にのまれない - 責務分割 x テスト
halhorn
1
160
Go コードベースの構成と AI コンテキスト定義
andpad
0
130
Featured
See All Featured
More Than Pixels: Becoming A User Experience Designer
marktimemedia
2
250
Utilizing Notion as your number one productivity tool
mfonobong
2
190
How to optimise 3,500 product descriptions for ecommerce in one day using ChatGPT
katarinadahlin
PRO
0
3.4k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
eileencodes
37
2.7k
Making Projects Easy
brettharned
120
6.5k
Design of three-dimensional binary manipulators for pick-and-place task avoiding obstacles (IECON2024)
konakalab
0
310
Building AI with AI
inesmontani
PRO
1
570
The Director’s Chair: Orchestrating AI for Truly Effective Learning
tmiket
0
62
Music & Morning Musume
bryan
46
7k
The Language of Interfaces
destraynor
162
25k
KATA
mclloyd
PRO
33
15k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3.3k
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]