List of Figures

Chapter 1: Introduction

Figure 1-1: Solution of a business problem.

Chapter 2: Fundamentals

Figure 2-1: The place of Enterprise JavaBeans in Sun's enterprise concept [J2EE-APM, 2000.]

Figure 2-2: Three-tiered architecture.

Figure 2-3: Classification of Enterprise JavaBeans in a system portfolio.

Figure 2-4: Example of components in a commercial enterprise.

Figure 2-5: Example of component architecture.

Chapter 3: The Architecture of Enterprise JavaBeans

Figure 3-1: Overview of the EJB architecture.

Figure 3-2: EJB in the context of Java2, Enterprise Edition.

Figure 3-3: Generation of the missing architectural components.

Figure 3-4: EJBHome and EJBObject at run time.

Figure 3-5: Finding an Enterprise Bean via JNDI.

Figure 3-6: Generating a new bean via the home interface.

Figure 3-7: Invoking a method via the remote interface.

Figure 3-8: EJB assignment of roles.

Figure 3-9: Secondary issues in a business problem.

Figure 3-10: An Enterprise JavaBean scenario.

Chapter 4: Session Beans

Figure 4-1: Overview of a session bean.

Figure 4-2: Conversational state.

Figure 4-3: Stateful and stateless session beans.

Figure 4-4: Life cycle of a stateless session bean instance.

Figure 4-5: Life cycle of a stateful session bean instance.

Figure 4-6: Interfaces of a session bean with remote client view.

Figure 4-7: Interfaces of a session bean with local client view.

Chapter 5: Entity Beans

Figure 5-1: Overview of entity beans.

Figure 5-2: Overview of the attributes of an entity bean.

Figure 5-3: Entity bean identity in the customer example.

Figure 5-4: Object-relational mapping of entity beans.

Figure 5-5: Foreign key versus relationship table.

Figure 5-6: State diagram for an entity bean instance.

Figure 5-7: Remote interfaces and classes of the CMP entity bean (EJB 2.0).

Figure 5-8: Local interfaces and classes of the CMP entity bean (EJB 2.0).

Figure 5-9: Example of a unidirectional one-to-one relationship.

Figure 5-10: Example of a unidirectional one-to-n relationship.

Figure 5-11: Example of a unidirectional n-to-m relationship.

Figure 5-12: Database schema for the store management problem.

Figure 5-13: StoreManager.

Figure 5-14: StoreManager— article display.

Figure 5-15: StoreManager— article search.

Figure 5-16: Modeling the data with entity beans.

Figure 5-17: Communication with the remote client.

Figure 5-18: Remote interfaces and classes of the CMP entity bean (EJB 1.1).

Figure 5-19: Remote interfaces and classes of the BMP entity bean.

Figure 5-20: Local interfaces and classes of the BMP entity bean.

Chapter 6: Message-Driven Beans

Figure 6-1: Overview of message-driven beans.

Figure 6-2: JMS and JMS providers.

Figure 6-3: Messaging concepts (queue, topic).

Figure 6-4: JMS interfaces.

Figure 6-5: Receiving messages over several sessions.

Figure 6-6: Life cycle of a message-driven bean.

Figure 6-7: Parallel processing with message-driven beans.

Figure 6-8: Interfaces of a message-driven bean.

Figure 6-9: Error-handling with message-driven beans.

Chapter 7: Transactions

Figure 7-1: Bank transfer as example of a transaction.

Figure 7-2: Communication paths in EJB transactions.

Figure 7-3: Example of a system involved in a distributed transaction.

Figure 7-4: JTS and EJB.

Figure 7-5: An example of data flow in an implicit transaction.

Figure 7-6: Example of data flow in a client's explicit transaction management.

Figure 7-7: Data flow example for explicit transaction management by a bean with a global transaction.

Figure 7-8: Example of data flow with explicit transaction management of a bean with a local transaction.

Chapter 8: Security

Figure 8-1: Schematic representation of EJB security.

Figure 8-2: Chain of mappings for roles.

Figure 8-3: User context in a chain of calls.

Chapter 9: Practical Applications

Figure 9-1: Example— ascertaining the exchange rate.

Figure 9-2: Example— conversion to the target currency.

Figure 9-3: Example— accounting system.

Figure 9-4: Example— accounting procedure with extensions.

Figure 9-5: Example— production monitor.

Figure 9-6: Example— Accounting application.

Figure 9-7: Booking with a framework.

Figure 9-8: Application-oriented cooperation framework.

Figure 9-9: Example of cooperation in a framework.

Figure 9-10: Inheritance in the bank account example.

Figure 9-11: Architecture of a configurable component.

Figure 9-12: Distributed event service via Java Message Service.

Figure 9-13: Process-internal communication with the event manager.

Figure 9-14: Internet connection with applets.

Figure 9-15: Internet connection with servlets.

Figure 9-16: Use of a details object.

Figure 9-17: Test result for TestBankAccount and TestPartBean.

Chapter 10: Web Services and Scheduling

Figure 10-1: The "Standardized World" of J2EE.

Figure 10-2: Internal integration.

Figure 10-3: External integration.

Figure 10-4: Web Service Endpoints in J2EE.

Figure 10-5: The interfaces of the timer service.