1. Spring
Framework &
Inversion of
Control
By Nazim Sitmanbetov

2. Preconditions
 Keep
calm
 Sit back
 Relax

3. Inversion of Control
 OOP
principle, not design pattern
 One of

4. Principle in OOP
 Modules
depend on abstractions
 Low level modules do not depend on
high level modules

5. Modules depend on
abstractions
Bad
Good

6. Low level modules do not
depend on high level modules
Bad
Tip: Avoid cyclic dependencies
Good

7. IoC implementations
 Factory
Method
 Service Locator
 Dependency Injection (DI)

8. Factory Method

9. Service Locator

10. Dependency Injection
 Allow
client of module to set dependency
Module
Client

11. Achievement unlocked

12. Framework
 Java
 Light-weight
 Open
Source

13. What means Light-Weight?
 No
container requirements
 Quick start
 Application easy-to-test

14. Spring & IoC
 Dependency
Injection
 Service Locator

15. Spring & Dependency
Injection
XML Based Configuration
mcdonalds-with-kazatin.xml
Java Program

16. Spring & Service Locator
Annotation Based
mcdonalds-locator.xml

17. Spring & Service Locator

18. Dependency Injection vs
Service Locator
DI
Service Locator
• Imperative
• Can be used with
existing classes
• Declarative
• Need to modify
existing classes

19. Spring components

20. Time to cook