Session Beans

In Chapter 12, we discuss this first type of EJB component. Because this is the first chapter that deals with EJBs, we cover several general details that apply to all EJB types; later chapters simply reference this one where necessary.

Session beans are currently the most often deployed EJB type, and they are often used as the main controller in an enterprise application, commonly tying servlets or JSPs to entity beans or other enterprise application components.

We discuss how to model their design with the UML, go into the technology details, and then discuss further how UML modeling can assist in the area of bean-to-bean relationships, session management, transactions, and so on.