Download Beginning EJB 3 Application Development: From Novice to by Raghu R. Kodali, Jonathan R. Wetherbee, Peter Zadronzy, PDF

By Raghu R. Kodali, Jonathan R. Wetherbee, Peter Zadronzy,

Company JavaBeans 3.0 (EJB 3.0) is a crucial portion of Sun’s new light-weight Java company variation five platform (Java EE 5). they're used for the improvement and deployment of component-based company enterprise functions equivalent to transaction-based functions. Ever seeing that its first free up, EJB has been the topic of a lot media awareness and no little controversy. EJBs symbolize a worldly and strong expertise and EJB-based purposes can aid excessive numbers of transactions and clients, with greatest safety. in spite of the fact that, prior incarnations of EJB have grow to be looked through many as a very advanced know-how that may result in expensive and time-consuming options which are tough to construct, enforce and continue. the recent light-weight EJB three is determined to alter all that. It has made large advances in ease of improvement, and its enormously simplified programming version has been broadly acclaimed and embraced. starting EJB three takes the reader in the course of the information of the EJB 3.0 structure, and exhibits how EJB can be utilized to advance strong, standards-based backend company good judgment. With 12 years of mixed EJB event, the authors provide many sensible insights into the full EJB structure, masking all parts of the EJB 3.0 specification, together with its new endurance framework, simplified improvement version, and different key new positive aspects.

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Extra resources for Beginning EJB 3 Application Development: From Novice to Professional (Beginning: from Novice to Professional)

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This method may initialize state information on the bean, or look up resources using JNDI, or any other action it wishes, provided that it does not require a transactional context. Such callback methods are called interceptors, and allow bean developers to participate programmatically in the interaction between an enterprise bean, or an entity, and its container. POJO Implementation EJB 3 has taken great strides to eliminate the trappings that beset enterprise bean classes and their required interfaces in earlier EJB releases.

1 application, chances are you will want to migrate it to EJB 3, either to leverage the performance benefits of the new persistence framework or to take advantage of the simplified development experience. This chapter walks you through the many steps you must take when migrating EJBs and EJB clients to 3, and provides an example migration case. Chapter 11: EJB 3 Deployment Assembly and deployment are rolled into this chapter, as we cover the tasks required of the Application Assembler and Deployer roles.

We need Ant software to set up the GlassFish application server, so as recommended, we will make use of the Ant software that is bundled with GlassFish. xml Figure 1-3. qxd 8/31/06 6:44 PM Page 17 CHAPTER 1 ■ INTRODUCTION TO THE EJB 3 ARCHITECTURE This command will set up the GlassFish application server domain, port numbers, and administrator account, among other things. After successful execution of the preceding command, your GlassFish application server will be ready to be used. In the next sections, we will show you how to set up environment variables, and start and verify the installed GlassFish application server.

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