Enterprise JavaBeans (EJB) Training

Goals

• Understand the role of EJB in the broader Java EE platform.
• Describe the features that are implemented by an EJB container on behalf of application components.
• Build stateless session beans as part of a service layer or SOA.
• Build JPA entities to represent persistent data records within the Java application.
• Develop systems of entities to manage complex data models including 1:1, 1:N, and N:N associations.
• Manage transactional behavior of the application through declarative and programmatic techniques.
• Invoke EJB sessions from Java web applications.
• Use dependency injection and JNDI names to assemble complex web/EJB systems with minimal fuss and maximal flexibility.
• Implement message-driven beans to process queued messages asynchronously.
• Declare and/or program transaction boundaries, persistence contexts, and exception handling to properly control persistence logic.
• Apply role-based authorization policies to EJBs.
• Build interceptors to perform generic processing before, after, or around EJB business-method invocations.
• Use EJB timers to defer processing or establish regularly scheduled tasks.

Outline

1. Overview
   1. Enterprise Applications
   2. Containers and Objects
   3. Three Containers
   4. Remote Connectivity
   5. Scalability and Availability
   6. Security
   7. Transaction Control
2. Architecture
   1. What is an EJB?
   2. Types of Beans
   3. Inversion of Control
   4. The Bean-Type Annotations
   5. Dependency Injection
   6. The @EJB Annotation
   7. The GlassFish Application Server
   8. The Administration Console
   9. Deploying EJB Applications
   10. Configuring Data Sources
   11. Development Cycle and Roles
3. Session Beans
   1. Interface/Implementation Split
   2. Stateful vs. Stateless
   3. The @Stateless Annotation
   4. Lifecycle and State Transitions
   5. Session Context
   6. The @Stateful Annotation
   7. State Transitions
   8. Singletons and Pools
4. Entities
   1. The Java Persistence API
   2. Persistence Annotations
   3. Configuration by Exception
   4. ORM Annotations
   5. The EntityManager
   6. Acquiring and Using the EntityManager
   7. persistence.xml
   8. @Enumerated and @Temporal Types
5. Associations
   1. Associations, Cardinality, and Ownership
   2. Annotations
   3. Unidirectional vs. Bidirectional
   4. The @Embedded Annotation
6. Java Persistence Query Language
   1. OO Query Languages
   2. The FROM Clause and Directionality
   3. The WHERE Clause
   4. The SELECT Clause
   5. Joins
   6. Aggregates and Grouping
   7. Ordering
7. Dependency Injection
   1. Interdependent Systems
   2. The Factory Pattern
   3. The Service Locator Pattern
   4. Dependency Injection
   5. Injection by Magic?
   6. Injection by Type
   7. Injection by Name
   8. The Component Environment
   9. Deployment Descriptors
   10. Impact on Stateful Session Beans
   11. JNDI
   12. Connecting to a Remote Bean
   13. Using mappedName
   14. Who Can Declare Dependencies
8. Message-Driven Beans
   1. Asynchronous Messaging
   2. The Java Message Service
   3. Message-Driven Beans
   4. Message Types
   5. Injecting JMS Queues
   6. JMS Configuration in GlassFish
9. Transactions
   1. ACID Transactions
   2. The EntityTransaction Interface
   3. EJB Transaction Attributes
   4. Persistence Contexts
   5. Extended Persistence Contexts
   6. Isolation Levels
   7. Application-Managed Persistence
   8. The SessionSynchronization Interface
   9. Impact on JMS and MDBs
10. Exception Handling
    1. Java Exceptions
    2. Remote Exceptions
    3. EJB Exception Handling
    4. System Exceptions
    5. Application Exceptions
    6. Transaction Control
11. Security
    1. Authentication and Authorization
    2. Declarative Authorization
    3. Abstract Roles
    4. Concrete Realms
    5. Configuring User Realms in GlassFish
    6. Programmatic Authorization
    7. Run-As Identity
12. Interceptors
    1. EJB and AOP
    2. The Intercepting Filter Pattern
    3. EJB Interceptors
    4. Annotating Interceptor Classes
    5. The InvocationContext Interface
    6. Binding Interceptors to Targets
    7. Shared Lifecycle and Context
    8. Interceptors and MDBs
13. Timers
    1. The EJB Timer Service
    2. The TimerService Interface
    3. The Timer Interface
    4. Timeout Methods
    5. Timer Handles
    6. Transactions and Timers

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