A brief review of the Spring 2.0 IOC Framework by Matthew McCullough of Ambient Ideas.

1. Spring 101
A 30 Minute Review by Matthew McCullough

2. ❶ What Is Spring?
Don’t call me, I’ll call you

3. • Java Application Framework (Not JEE)
• Targets Web, Enterprise Applications
• POJO Centric
• Inversion of Control (IOC)
• Now called Dependency Injection (DI)

4. ❷ Modularized
Alphabet Soup

5. • JDBC Wrapper
• JDO, iBatis, Hibernate, JPA helper
• Supplement to Struts, Tapestry
• Batch Processing Framework
• Timed Events
• JMS, JNDI, LDAP

6. ❸ IOC/DI
Don’t call me, I’ll call you

7. • Core Spring capabilities
• Configure components from outside-in
• Counter to the usual constructor calling
out to everything it needs

8. Split Personalities
• DI/IOC can be used in three ways
• POJO Setters
• Constructors
• Service lookup (JNDI)

9. ❹ Factory
But not the kind that Al Gore worries about

10. • POJO Centric
• BeanFactory creates beans
• Gives toggle choice between singleton
and instances
• Creates PROPER singletons
• Auto-wiring by name

11. ❺ Aspects

12. • Supplement existing methods on the fly
• Terminology: Proxies, Weaving, AspectJ
• Weaving:
• Byte time
• Load time