Getting Started with WebSphere Application Server

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108 Getting Started with WebSphere Application Server Community Edition B. @Entity C. @Persistence D. @Persistences E. @PersistenceUnit 8. Which type of application clients are there in Community Edition? A. Standalone application client B. Container managed application client C. WebSphere Application Server Community Edition application client D. Geronimo application client E. Normal application client 9. Which are the methods of creating JPA entities? A. Create JPA entities manually with annotations B. Generating JPA entities from tables C. Community Edition can generate JPA entities automatically D. A servlet can generate JPA entities automatically E. An EJB can generate JPA entities automatically 10. What is the name of the EJB deployment plan in Community Edition? A. ejb-jar.xml B. openejb-jar.xml C. geronimo-web.xml D. web.xml E. None of the above
6 Chapter 6 – Messaging Messaging is a way to communicate asynchronously, similar to an e-mail system. The sender creates a message, and sends it to a messaging destination through a messaging subsystem. The messaging subsystem accepts it for delivery and holds it. The receiver checks the messaging subsystem to receive the message. Messaging allows for a loosely coupled solution. The sender application only has to ensure that the message was accepted for delivery and then can proceed with other processing. An outage on either the sender or receiver parts, do not immediately affect the entire system. Java Message Service (JMS) is used to support messaging in the Java EE world. In this chapter you will learn about: • How to configure a JMS resource group • How to use JMS resources in different applications of Community Edition. 6.1 Community Edition Messaging: The big picture Figure 6.1 provides an overview on how messaging works in Community Edition. First in (1), an administrator creates a JMS resource group in the server. Then there are three ways to use the created JMS resource group: • In (2a) and (2a.1), the Servlet/jsp uses JNDI lookup or resource injection to get a reference to the JMS resources, and then uses this reference to send or receive messages of the JMS resource in the server. • In (2b) and (2b.1), you can use annotation to specify the JMS queue or topic that the Message Driven Bean (MDB) listens to. When the message arrives, the MDB will react according to the content of received message. • In (2c), a standalone java client (POJO client) can use ActiveMQConnectionFactory API to get the JMS resource and use the JMS resource directly.
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G E T T I N G S T A R T E D W I T H
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Notices This information was develo
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Trademarks IBM, the IBM logo, and i
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3.8 Exercises .....................
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9.3.2 Changing port numbers .......
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13 Preface Keeping your skills curr
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The DB2 on Campus book series 15
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18 Getting Started with WebSphere A
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1 Chapter 1 - Introduction to WebSp
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Introduction to WebSphere Applicati
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3 Chapter 3 - Development with Comm
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Chapter 3 - Development with Commun
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158 Getting Started with WebSphere
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PART III - ADMINISTERING COMMUNITY
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10 Chapter 10 - Tuning a Community
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Chapter 10 - Tuning a Community Edi
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A Appendix A - Solutions to review
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Appendix A - Solutions to review qu
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B Appendix B - Up and running with
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Appendix B - Up and running with DB
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4. The following is performed by de
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C Appendix C - Using the sample cod
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Getting Started with WebSphere Application Server

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