Implementing the Business Tier with Session Beans | Java EE 5 Development with NetBeans 6

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Java EE 5 Development with NetBeans 6

4 (5)

Java EE 5 Development with NetBeans 6

4 (5)

Overview of this book

This book is written as a tutorial, leading you through examples to illuminate the main theory and get you working with the Entity Framework as quickly as possible. This book is for C# developers who want an easier way to create their data access layer. You will need to be comfortable with ADO.NET, but you don't need to know anything about the Entity Framework. Along the way we will create some ASP.NET applications, so being familiar with this will also help.

Java EE 5 Development with NetBeans 6

Java EE 5 Development with NetBeans 6

Credits

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

Preface

Preface

Free Chapter

Getting Started with NetBeans

Getting Started with NetBeans

Introduction

Downloading NetBeans

Installing NetBeans

Starting NetBeans for the First Time

Configuring NetBeans for Java EE Development

Deploying Our First Application

NetBeans Tips for Effective Development

Summary

Developing Web Applications with Servlets and JSPs

Developing Web Applications with Servlets and JSPs

Creating Our First Web Application

Servlet Development

Securing Web Applications

JSP Fragments

Monitoring Web Applications with NetBeans HTTP Monitor

Summary

Enhancing JSP Functionality with JSTL and Custom Tags

Enhancing JSP Functionality with JSTL and Custom Tags

Core JSTL Tags

SQL JSTL Tags

Closing Remarks about JSTL

Custom JSP Tags

Summary

Developing Web Applications using JavaServer Faces

Developing Web Applications using JavaServer Faces

Introduction to JavaServer Faces

Developing Our first JSF Application

JSF Validation

Displaying Tabular Data

Summary

Interacting with Databases through the Java Persistence API

Interacting with Databases through the Java Persistence API

Creating Our First JPA Entity

Automated Generation of JPA Entities

Generating JSF Applications from JPA Entities

Summary

Visual Web JSF Development

Visual Web JSF Development

Writing Our first Visual Web Application

Summary

Implementing the Business Tier with Session Beans

Implementing the Business Tier with Session Beans

Introduction to Session Beans

Creating a Session Bean in NetBeans

Session Bean Transaction Management

Implementing Aspect-Oriented Programming with Interceptors

EJB Timer Service

Generating Session Beans from JPA Entities

Summary

Messaging with JMS and Message Driven Beans

Messaging with JMS and Message Driven Beans

Introduction to JMS

Creating the Project and JMS Resources

Sending Messages to a Message Destination

Processing JMS Messages with Message Driven Beans

Summary

Web Services

Web Services

Introduction to Web Services

Creating a Simple Web Service

Exposing EJBs as Web Services

Summary

Putting it all Together

Putting it all Together

Creating Our Enterprise Project

Summary

Debugging Enterprise Applications with the NetBeans Debugger

Debugging Enterprise Applications with the NetBeans Debugger

Debugging Enterprise Applications

Summary

Identifying Performance Issues with NetBeans Profiler

Identifying Performance Issues with NetBeans Profiler

Profiling Our Application

Summary

EJB Timer Service

Stateless session beans and message-driven beans (another type of EJB discussed in the next chapter) can have a method that is executed automatically at regular intervals. This functionality is useful in case we want to execute some logic periodically (once a week, every day, every hour, etc.) without having to explicitly call any methods. This functionality is achieved by the EJB timer service.

In order to use the EJB timer service, an instance of javax.ejb.TimerService must be injected into the EJB via the @Resource annotation. This object will be used to create and cancel timers in two different methods in the EJB. Finally, the EJB must have a method to be invoked when the timer expires. This method must be decorated with the @Timeout annotation. The following example illustrates how to use the EJB timer service.

package com.ensode.ejbtimer.ejb;
import java.io.Serializable;
import java.util.Collection;
import java.util.Date;
import javax.annotation.Resource;
import javax...

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