View
2.890
Download
13
Category
Tags:
Preview:
DESCRIPTION
Citation preview
"Everythingshouldbemadeass impleaspossible, but not s impler." Albert Einstein
Chaos
Order
Focus
Create a world
with laws
environment Be aware of the
Basic types for the world
Value objects
Value objects • Represents a value
• No identity
• immutable
• Equality by value
good example
...or not
All the same
Entities Meet Bob
Hi, my name is Bob
I'm 32 years old
...and I'm a starshiptrooper
Meet bob
Hi, my name is Bob too
I'm also 32 years old
...and also a starshiptrooper
Identity
Identity • Combination of properties
• Personal number
Aggregate Root
Domain Model by Example
Student
Student
Class
Student
Class Teacher
Student
Class Teacher
Mayor Address
Student
Class Teacher
Mayor Address
Location Material
Student
Class Teacher
Schema Payroll
Mayor Address
Location Material
Student
Class Teacher
Schema Payroll
Mayor Address
Location Material
Student
Class Teacher
Schema Payroll
Mayor Address
Location Material
Student
Class Teacher
Schema Payroll
Mayor Address
Location Material
Student
Class Teacher
Schema Payroll
Mayor Address
Location Material
Validation
Validation
• Validatable objects
• !invariant object
Validatable object
• Default ctor • Supported by a lot of frameworks • Flexible
• Naive
!Invariant object
• No default ctor, most of the time • Nonflexible
• Strict!
dist
ortio
n
Active-Passive
Repositories
Storage
Services Tight, small and focused
Serv
ice
laye
r?
Service layers are c00l • Support multiple application
• Your domain is in the center of the world
• Huge enviroments
• Read DTO's • Write command
Service layers are bad, mkay • Domain logic is boxed
• Logic duplication
• No direct feedback
• Databinding support!
Bootstrapping
Overview
Domain
Domain
DB
Domain UI
DB
Domain UI
Storage
Service DB
Domain UI
Storage
Service DB
Logging
Domain Service bus UI
Logging
Storage
Service DB
Domain Service bus UI
Logging
Storage
Service DB
Domain Service bus
UI model
Logging
Storage
Service DB
UI
Beheer
Domain Service bus
UI model
Logging
Storage
Service DB
UI
Beheer
WCF
Inversion of control You only want beer
Learn more
DISCUSSION
You were great! Really, I already knew it when creating this slide
Recommended