Enterprise JavaBeans (EJB)

Accelebrate
Atlanta, Georgia, United States

Course Format: Classroom | E-learning | Virtual Class | Online | On-site | Blended | Self-paced

Course Description:

'' Introduction to EJB teaches attendees the skills they need to successfully develop all types of Enterprise JavaBeans, including session beans, entity beans, and message-driven beans. This course is taught using the EJB 3.0 framework.

EJB Training Objectives
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.

EJB Training Outline
Introduction
Overview of EJB and Java Persistence API (JPA)
Goals of EJB, EJB in the Java EE architecture
EJB 3.0 Overview
Session Beans, Persistent 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 (DataSource and others)
Session Bean Lifecycle and Interceptors
Stateless Session Bean Lifecycle
Business Method Interceptors, InvocationContext, 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
ConnectionFactory 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
EntityManager
Persisting to the DB, the EntityManager,
Persistence Units and Configuration
Injecting an EntityManager
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
Conclusion

...''

Phone:+1 877 849 1850

School Address:

925B Peachtree Street, NE
PMB 378
Atlanta, GA 30309-3918
USA

Jobs & Resumes: Atlanta
Houses & Roommates: Atlanta

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