Enterprise JavaBeans (EJB) Training

Posted by admin - 02/09/09 at 05:09 am

Introduction

• EJB and Java Persistence API (JPA)
  • Goals of EJB, EJB in the Java EE architecture
• EJB 3.0 Overview
  • Entities, Message Driven Beans

Session Beans

• Session Bean Overview
  • Services provided, Stateless and Stateful Beans
  • Defining a Session Bean – EJB 3 Annotations
  • The Bean Implementation, Remote and Local Business Interface
• Packaging and Deployment
  • ejb-jar file, Deployment Descriptors in EJB 3
  • EAR file
  • The EJB Container
• JNDI Overview
  • Distributed Naming and Lookup
  • Context and InitialContext
  • Using JNDI
• Writing an EJB 3 Client
  • Client View of a Session Bean
  • PortableRemoteObject and Casting
  • Running the Client

Additional Capabilities

• Resources and Dependency Injection
  • EJB referencing another EJB
  • Referencing Resources, Environment Entries
  • Connection Factories (Data Source and others)
• Session Bean Lifecycle and Interceptors
  • Stateless Session Bean Lifecycle
  • Business Method Interceptors, Invocation Context, Lifecycle Callback Interceptors, Interceptor Classes
• Stateful Session Beans
  • Overview
  • Defining, Client Relationship
  • Lifecycle, Activation, Passivation
• Timer Service
  • Overview and usage

Message-Driven Beans

• Overview of Messaging Systems
  • Messaging, Loose Coupling
  • Pub/Sub, Point2Poin
• Overview of JMS API
  • Overview and Structure
  • Connection Factory and Destination
  • JMS Producer and Consumer Client example
  • JMS Messages
• Message-Driven Beans (MDB)
  • Overview and Goals
  • @MessageDriven and MDB example
  • Configuring with activationConfig
  • State Diagram and Interceptors

Transactions and Security

• Overview of Transactions and Transactional Systems
  • ACID, Tx Lifecycle, Tx Manager, Transactional Objects
• Transactions in EJB 3
  • Declarative Transaction Management
  • Transaction Attributes and Transactional Scope
  • Transaction Scenarios and Bean-Managed Tx
• Security
  • Java EE Security Overview (Role-based)
  • @RolesAllowed, @PermitAll
  • Programmatic Security

Exceptions

• Exception Overview
  • Checked and Unchecked Exceptions
• Exceptions in EJB 3
  • Application Exceptions, System Exceptions
• EJB 3 Best Practices
  • When to Use, Coarse-Grained Business Interfaces, Session Facade, Transaction Guidelines, Clusterin.

Introduction to Java Persistence API (JPA)

• Overview
  • Persistence Layers, Object-Relational Mapping (ORM), JDBC
  • JPA Overview
• Mapping with JPA
  • Entities and @Entity, ids and @Id
  • Generated Id Values
  • Basic Mapping Types
• Entity Manager
  • Persisting to the DB, the Entity Manager,
  • Persistence Units and Configuration
  • Injecting an Entity Manager
  • Retrieving Persistent Entities

Updates and Queries

• Inserting and Updating
  • Transient, Persistent, Detached, Removed
  • Persisting new Entities, Updating a Persistent Instance
• Querying and JPQL
  • Object Based Queries, Select statements, WHERE clause
  • Named Queries
• Versioning and Optimistic Locking
  • Detached Instances
  • Versioning and Optimistic Locking in EJB 3

Entity Relationships

• Relationships Overview
  • Object Relationships, Participants, Roles, Directionality, Cardinality
• Relationship Mapping
  • Mapping Overview (1-1, 1-N, N-1, N-N)
  • Unidirectional and Bidirectional
  • Mapping One-One, One-Many and Many-Many
  • Join Columns
  • Relationship Inverses
  • Lazy and Eager Loading
  • Cascading
  • Queries Across Relationships (Inner Joins, Outer Joins, Fetch Joins)
  • JPA
• Inheritance Mapping
  • Entity Inheritance
  • Single Table, Joined (Table per Subclass), Table per Concrete Class
  • Pros and Cons

Additional JPA Capabilities

• Queries – Projection, Aggregate, Bulk Update/Delete
• Embedded Objects
• EJB 3 and Java SE
• Best Practices
  • Primary Keys, Named Queries, Lazy/Eager Loading, Transactional Semantics, Encapsulation, Report Queries

This entry was posted on Wednesday, September 2nd, 2009 at 5:46 am and is filed under Java Courses. The entry is tagged under EJB, EJB Training Course, EJB Training Java Enterprise Javabeans, Java Online Training, Online EJB Training. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.