Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying EJB 3 Developer Guide
  • Table Of Contents Toc
EJB 3 Developer Guide

EJB 3 Developer Guide

By : Michael Sikora
4.2 (6)
close
close
EJB 3 Developer Guide

EJB 3 Developer Guide

4.2 (6)
By: Michael Sikora

Overview of this book

Table of Contents (18 chapters)
close
close
EJB 3 Developer Guide
Credits
About the Author
About the Reviewers
Preface
1
Annotations and Their Corresponding Packages

MDB Example Revisited


We will go back to our earlier example and add in a few more features that we covered in the last few sections. To recap, we have a session bean, BankServiceBean, which sends a message to a JMS queue requesting that a new customer be added to the database. The message itself is a customer object. On receipt of the message, the MDB adds the customer to the database. This time we will use a topic instead of a queue.

In this example we will also assume that customers can be either high or low priority. To illustrate the message filtering capabilities of MDBs, the MDB we describe in this section will only process high priority customers. We can assume that a separate MDB will process low priority customers.

The only modification we make to BankServiceBean is to indicate that we are using a JMS topic and that we have a high priority customer. We do this using the ObjectMessage.setStringProperty() method. The MDB will subsequently filter out any low priority customers. The...

CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
EJB 3 Developer Guide
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon