1. Store Of Core Spring
Mak Bhatamrekar
http://github.com/makrand-bkar
AJCP
http://meetup.com/my-ajcp
Atlanta Java Concept Pros

2. Agenda
• The Problem
• Solution With No Spring and Challenges
• Magic Of Spring Core/ DI
• More on XML Config & Co`ncepts
• Must Know Key Concepts
• Whats new Spring 3
• Recap

3. Dependencies


4. TATA NANO

6. Issues
Multiple Programmers Practical Aspects
• Create Dummy Classes ? Different Test and
– Method Names e.g getType() Production Configurations
in engine
• Code and Compile ?Reduced Test Cycles
– Add image here
?Cluttered Business Logic

8. Spring Framework – The Hero
Important Dates
• Spring 1.0 - 2004
• Spring 1.2.6 – Won Awards
• Spring 2.0 – Oct 2006
• Spring 2.5 – Nov 2007
• Spring 3.0 – Dec 2009
• Spring 3.1 – Dec 2011
• Spring 3.2.1 – Jan 2013
• Spring 4.0 – End of Year

9. Spring Framework
Josh long-a-walking-tour-of-spring-3-1-pdf-d421509802 -

10. Spring Projects
• Spring Security
• Spring Integration
• Spring Batch
• Spring Data
• Spring Web Services
• Spring Web
• Spring Social
• Spring Android
• More..

11. DriverMain

12. Dependency Injection is a form of Inversion Of
Control.
Also know as the Hollywood Principle
“Don’t call us, we’ll call you! “

13. DI Types
• XML Based
• Annotation Based
– Bypass some of the XML Configurations with XML
Support.
• Java Based

14. <bean id="car" class="com.ajcp.withspring.v1.testimpl.Car">
<!-- setter Injection example -->
<constructor-arg ref="tireList" />
<bean id="engine" class="com.ajcp.withspring.v1.testimpl.Engine">
<constructor-arg ref="engine" />
<property name="type" value="V4"></property>
</bean>
</bean>

15. Important Configs
• <context:annotation-config />
• <context:component-scan>
• p: -- namespace for setter injections
• c: -- namespace for getter injects
• util: -- useful utilties for DI
• aop – aop support
• tx – transaction support

16. At it’s core – Spring is a framework for wiring up
your entire application

17. @Autowired
• byName - by property name
• byType - by property type
• Constructor – Similar to byType but applies to
constructor args
• Autodetect – first autowires by constructor, if
that fails autowires byType.

18. <context:annotation-config />
<context:component-scan base-
package="com.ajcp.withspring.v2annotation.testimpl"
/>
<bean id="brand"
class="com.ajcp.withspring.v2annotation.testimpl.Bran
d"/>
<!– Autowire byType -->
<bean id="tire1"
class="com.ajcp.withspring.v2annotation.testimpl.TireImpl"
autowire="byType"></bean>
<!– Autowire constructor-->
<bean id="carService"
class="com.ajcp.withspring.v2annotation.testimpl.CarImpl"
autowire="constructor">

19. Spring DI Annotations
• @Required
• @Autowired
• @Qualifier
• @Resource – JSR Annotation –
– Combines @Autowired and @Qualifier
• @Component
• @Service
• @Repository

20. @Autowired // beans are autowired by Type
private EngineService engineService;
@Autowired
@Qualifier("tire1")
private TireService tireService;

21. public static void main(String[] args) {
ApplicationContext context =
new
ClassPathXmlApplicationContext("BeansWit
Annotation.xml");
@Bean Driver driver = (Driver)
@Scope("prototype") context.getBean("driver");
public EngineService engineService(){ driver.createCarAndDrive();
EngineService e = new EngineImpl();
e.setType(EngineImpl.V6_ENGINE);
return e;
}
Java Based Config

22. Bean Scopes
• Singleton (default)
• Prototype
• Request
• Session
• Global session

23. Steps To Execute SourceCode
1. Download from github, Zip option is also
there
2. cd SpringCoreCarSample
3. mvn compile eclipse:eclipse
4. Open Eclipse
5. Select File ->Import -> Existing Projects Into..
6. Run the Main classes as Application from
Eclipse

24. Reference Links
Meetup.com / Atlanta Spring Users Group
•https://github.com/makrand-bkar/SpringCoreCarSample
•http://www.tutorialspoint.com/spring/
•http://www.mkyong.com/spring/
•http://www.springsource.org/tutorials

25. Store Of Core Spring
Mak Bhatamrekar
github :http://github.com/makrand-bkar
twitter : mak-bkar
url : www.careerinjava.com
http://meetup.com/my-ajcp
Atlanta Java Concept Pros