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Java Message Service

Java Message Service

Richard Monson-Haefel, Dave Chappell

238 pages, parution le 01/03/2001

Résumé

This book is a thorough introduction to Java Message Service (JMS), the standard Java application program interface (API) from Sun Microsystems that supports the formal communication known as "messaging" between computers in a network. JMS provides a common interface to standard messaging protocols and to special messaging services in support of Java programs. The messages exchange crucial data between computers, rather than between users--information such as event notification and service requests. Messaging is often used to coordinate programs in dissimilar systems or written in different programming languages.

Using the JMS interface, a programmer can invoke the messaging services of IBM's MQSeries, Progress Software's SonicMQ, and other popular messaging product vendors. In addition, JMS supports messages that contain serialized Java objects and messages that contain Extensible Markup Language (XML) pages.

Messaging is a powerful new paradigm that makes it easier to uncouple different parts of an enterprise application. Messaging clients work by sending messages to a message server, which is responsible for delivering the messages to their destination. Message delivery is asynchronous, meaning that the client can continue working without waiting for the message to be delivered. The contents of the message can be anything from a simple text string to a serialized Java object or an XML document.

Java Message Service shows how to build applications using the point-to-point and publish-and-subscribe models; how to use features like transactions and durable subscriptions to make an application reliable; and how to 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.

Preface

1. Understanding the Messaging Paradigm
     Enterprise Messaging
     The Java Message Service ( JMS)
     Application Scenarios
     RPC Versus Asynchronous Messaging

2. Developing a Simple Example
     The Chat Application

3. Anatomy of a JMS Message
     Headers
     Properties
     Message Selectors
     Message Types

4. Publish-and-Subscribe Messaging
     Getting Started with the B2B Application
     Temporary Topics
     Durable Subscriptions
     Publishing the Message Persistently
     JMSCorrelationID
     Request and Reply
     Unsubscribing

5. Point-to-Point Messaging
     Point-to-Point and Publish-and-Subscribe
     The QWholesaler and QRetailer
     Creating a Queue Dynamically
     Load Balancing Using Multiple QueueSessions
     Examining a Queue

6. Guaranteed Messaging, Transactions, Acknowledgments, and Failures
     Guaranteed Messaging
     Message Acknowledgments
     Message Groups and Acknowledgment
     Transacted Messages
     Lost Connections
     Dead Message Queues

7. Deployment Considerations
     Performance, Scalability, and Reliability
     To Multicast or Not to Multicast
     Security
     Connecting to the Outside World
     Bridging to Other Messaging Systems

8. J2EE, EJB, and JMS
     J2EE Overview
     J2EE: A United Platform
     The JMS Resource in J2EE
     The New Message-Driven Bean in EJB 2.0

9. JMS Providers
     IBM: MQSeries
     Progress: SonicMQ
     Fiorano: FioranoMQ
     Softwired: iBus
     Sun Microsystems: Java Message Queue
     BEA: WebLogic Server
     ExoLab: OpenJMS

A. The Java Message Service API

B. Message Headers

C. Message Properties

D. Message Selectors

Index

L'auteur - Richard Monson-Haefel

Richard Monson-Haefel fait partie des meilleurs specialistes Enterprise JavaBeans. Il est notamment
l'architecte du projet OpenEJB, un serveur de beans Open Source, et travaille comme consultant en
informatique distribuee d'entreprise.

L'auteur - Dave Chappell

Dave Chappell is vice president and SonicMQ chief technology evangelist at Progress Software Corp. Dave has over 18 years of industry
experience building software tools and infrastructure for application developers, spanning all aspects of R&D, sales, marketing, and support
services. Dave has also been published in Network World magazine and has presented technical topics at numerous speaking engagements
including JavaOne and XMLOne.
As director of engineering for SonicMQ, Progress Software's award winning JMS Internet Commerce Messaging System, Dave oversaw the
design and development of the fastest and most scalable, reliable, and robust implementation of JMS in the marketplace.

Caractéristiques techniques

  PAPIER
Éditeur(s) O'Reilly
Auteur(s) Richard Monson-Haefel, Dave Chappell
Parution 01/03/2001
Nb. de pages 238
Format 17 x 23
Couverture Broché
Intérieur Noir et Blanc
EAN13 9780596000684
ISBN13 978-0-596-00068-4

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