Richard Monson-Haefel - Java Message Service (OReilly Java Series)

Java Message Service

Richard Monson-Haefel

David A. Chappell

Publisher: O'Reilly

First Edition January 2001

ISBN: 0-596-00068-5, 238 pages

This book is a thorough introduction to Java Message Service (JMS) from Sun Microsystems. It shows how to build applications using the point-to-point and publish-and-subscribe models; use features like transactions and durable subscriptions to make applications reliable; and use messaging within Enterprise JavaBeans. It also introduces a new EJB type, the MessageDrivenBean, that is part of EJB 2.0, and discusses integration of messaging into J2EE.

Team[oR]

Table of Contents

Preface ..............................................................................................................................1

What Is the Java Message Service?.................................................................................1

Who Should Read This Book?........................................................................................1

Organization...................................................................................................................2

Software and Versions ....................................................................................................3

Conventions ...................................................................................................................4

Comments and Questions ...............................................................................................4

Acknowledgments ..........................................................................................................5

Chapter 1. Understanding the Messaging Paradigm ......................................................6

1.1 Enterprise Messaging................................................................................................7

1.2 The Java Message Service (JMS) ..............................................................................9

1.3 Application Scenarios .............................................................................................11

1.4 RPC Versus Asynchronous Messaging ................................................................... 15

Chapter 2. Developing a Simple Example ..................................................................... 19

2.1 The Chat Application..............................................................................................19

Chapter 3. Anatomy of a JMS Message......................................................................... 33

3.1 Headers...................................................................................................................34

3.2 Properties................................................................................................................38

3.3 Message Selectors...................................................................................................40

3.4 Message Types ....................................................................................................... 42

Chapter 4. Publish-and-Subscribe Messaging...............................................................53

4.1 Getting Started with the B2B Application ...............................................................53

4.2 Temporary Topics................................................................................................... 60

4.3 Durable Subscriptions .............................................................................................61

4.4 Publishing the Message Persistently........................................................................63

4.5 JMSCorrelationID...................................................................................................64

4.6 Request and Reply .................................................................................................. 65

4.7 Unsubscribing......................................................................................................... 68

Chapter 5. Point-to-Point Messaging.............................................................................69

5.1 Point-to-Point and Publish-and-Subscribe ...............................................................69

5.2 The QWholesaler and QRetailer..............................................................................71

5.3 Creating a Queue Dynamically ...............................................................................78

5.4 Load Balancing Using Multiple QueueSessions ......................................................79

5.5 Examining a Queue................................................................................................. 80

Chapter 6. Guaranteed Messaging, Transactions, Acknowledgments & Failures ...... 84

6.1 Guaranteed Messaging ............................................................................................84

6.2 Message Acknowledgments....................................................................................85

6.3 Message Groups and Acknowledgment...................................................................91

6.4 Transacted Messages ..............................................................................................95

6.5 Lost Connections .................................................................................................. 104

6.6 Dead Message Queues .......................................................................................... 106

Chapter 7. Deployment Considerations....................................................................... 108

7.1 Performance, Scalability, and Reliability .............................................................. 108

7.2 To Multicast or Not to Multicast ........................................................................... 112

7.3 Security ................................................................................................................ 116

7.4 Connecting to the Outside World .......................................................................... 118

7.5 Bridging to Other Messaging Systems .................................................................. 120

Chapter 8. J2EE, EJB, and JMS.................................................................................. 122

8.1 J2EE Overview ..................................................................................................... 122

8.2 J2EE: A United Platform ...................................................................................... 125

8.3 The JMS Resource in J2EE................................................................................... 126

8.4 The New Message-Driven Bean in EJB 2.0........................................................... 128

Chapter 9. JMS Providers............................................................................................ 133

9.1 IBM: MQSeries .................................................................................................... 133

9.2 Progress: SonicMQ ............................................................................................... 134

9.3 Fiorano: FioranoMQ ............................................................................................. 135

9.4 Softwired: iBus ..................................................................................................... 136

9.5 Sun Microsystems: Java Message Queue .............................................................. 138