Implementing POJOs with EJB 3 - POJOs in Action: Developing Enterprise Applications with Lightweight Frameworks - page 394

EJB Container

EJB

References

JNDI Reference

Creates

Spring Bean Factory

POJO

POJO POJO

Figure 10.4 Using a JNDI Reference to a Spring bean

Here is an example of some code that stores a reference to the PlaceOrderService
Spring bean in the JNDI tree:

Context ctx = new InitialContext();
Reference reference = new Reference(
PlaceOrderService .class.getName(),
new StringRefAddr("beanName", "PlaceOrderService" ),
SpringObjectFactory.class.getName(),
null);
ctx.bind(" PlaceOrderService ", reference);
This code fragment instantiates a Reference that contains the name of the Place-
OrderService class, the name of the Spring bean, and the fully qualified class
name of the SpringObjectFactory , which is a JNDI object factory that calls Bean-
Factory.getBean() . It then binds the name “PlaceOrderService” to the reference
in the JNDI tree.
When the JNDI implementation encounters this reference during a lookup, it
calls SpringObjectFactory to create the object. This class defines a getObject-
Instance() method that creates a Spring bean by calling a Spring bean factory:

public class SpringObjectFactory implements
ObjectFactory {

public Object getObjectInstance(Object reference,
Name name, Context nameCtx,
Hashtable<?, ?> environment)