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

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

ISBN-10: 1590596714

ISBN-13: 9781590596715

Firm JavaBeans 3.0 (EJB 3.0) is an important element 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 purposes reminiscent of transaction-based purposes. Ever considering the fact that its first free up, EJB has been the topic of a lot media recognition and no little controversy. EJBs characterize a worldly and robust know-how and EJB-based purposes can aid excessive numbers of transactions and clients, with greatest defense. in spite of the fact that, prior incarnations of EJB have grow to be looked via many as a very advanced expertise that could result in expensive and time-consuming ideas which are tricky to construct, enforce and keep. the hot 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 generally acclaimed and embraced. starting EJB three takes the reader throughout the information of the EJB 3.0 structure, and indicates how EJB can be utilized to enhance robust, standards-based backend company common sense. With 12 years of mixed EJB adventure, the authors provide many useful insights into the total EJB structure, overlaying all components of the EJB 3.0 specification, together with its new patience framework, simplified improvement version, and different key new positive factors.

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Note Substitute localhost with the machine name or IP address if you are trying to access it from a machine other than the one on which GlassFish is installed. If you changed the port number during installation, use that port instead of 8080. qxd 22 8/31/06 6:44 PM Page 22 CHAPTER 1 ■ INTRODUCTION TO THE EJB 3 ARCHITECTURE Figure 1-9. Testing GlassFish The next step is to test the access to the administration console. In the browser, type in the URL http://localhost:4848/, and you will be able to see the administration console login page, as shown in Figure 1-10.

Listing 2-2. Remote; @Remote public interface SearchFacade { List wineSearch(String wineType); } Listing 2-3 shows the code snippet for the SearchFacade local business interface, with an @Local annotation and a wineSearch() method declaration. Listing 2-3. Local; @Local public interface SearchFacadeLocal { List wineSearch(String wineType); } Business Methods The methods implemented in the bean class must correspond to the business methods declared in the remote or local business interfaces. They are matched up based on the convention that they have the same name and method signature.

They can also be run in physically separate machines that have an instance of an application server. qxd 8/31/06 6:32 PM Page 31 CHAPTER 2 ■ EJB 3 SESSION BEANS Stateless Session Beans Stateless session beans are comprised of the following elements: • Business interfaces, which contain the declaration of business methods that are going to be visible to client applications • A bean class, which contains the business method implementation to be executed The Bean Class A stateless session bean class is any standard Java class that has a class-level annotation of @Stateless.

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Beginning EJB 3 Application Development: From Novice to Professional (Beginning: from Novice to Professional) by Raghu R. Kodali, Jonathan R. Wetherbee, Peter Zadronzy,


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