Beginning Java EE 6 with GlassFish 3, Second Edition

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CHAPTER 1 ■ JAVA EE 6 AT A GLANCEthan an evolution of the platform. JavaServer Faces (JSF) was introduced as the standard presentationtier framework, and JAX-WS 2.0 replaced JAX-RPC as the SOAP web services API.Today, Java EE 6 (JSR 316) follows the path of ease of development by embracing the concepts ofannotations, POJO programming, and the configuration-by-exception mechanism throughout theplatform, including the web tier. It comes with a rich set of innovations such as the brand-new JAX-RS1.1; it simplifies mature APIs like EJB 3.1, and enriches others such as JPA 2.0 or the timer service. But themajor themes for Java EE 6 are portability (through standardizing global JNDI naming, for example),deprecation of some specifications (via pruning), and creating subsets of the platform through profiles.In this book, I want to show you these improvements and how much easier and richer Java EnterpriseEdition has become.StandardsAs you can see, Java EE is based on standards. It is an umbrella specification that bundles together anumber of other JSRs. You might ask why standards are so important, as some of the most successfulJava frameworks are not standardized (Struts, Spring, etc.). Throughout history, humans have createdstandards to ease communication and exchange. Some notable examples are language, currency, time,navigation, measurements, tools, railways, electricity, telegraphs, telephones, protocols, andprogramming languages.In the early days of Java, if you were doing any kind of web or enterprise development, you wereliving in a proprietary world by creating your own frameworks or locking yourself to a proprietarycommercial framework. Then came the days of open source frameworks, which are not always based onopen standards. You can use open source and be locked to a single implementation, or use open sourcethat implements standards and be portable. Java EE provides open standards that are implemented byseveral commercial (WebLogic, Websphere, MQSeries, etc.) or open source (GlassFish, JBoss, Hibernate,Open JPA, Jersey, etc.) frameworks for handling transactions, security, stateful components, objectpersistence, and so on. Today, more than ever in the history of Java EE, your application is deployable toany compliant application server with very few changes.ArchitectureJava EE is a set of specifications implemented by different containers. Containers are Java EE runtimeenvironments that provide certain services to the components they host such as life-cycle management,dependency injection, and so on. These components use well-defined contracts to communicate withthe Java EE infrastructure and with the other components. They need to be packaged in a standard way(following a defined directory structure that can be compressed, we talk about archive files) before beingdeployed. Java EE is a superset of the Java SE platform, which means Java SE APIs can be used by anyJava EE components.Figure 1-2 shows the logical relationships between containers. The arrows represent the protocolsused by one container to access another. For example, the web container hosts servlets, which canaccess EJBs through RMI-IIOP.4
CHAPTER 1 ■ JAVA EE 6 AT A GLANCEFigure 1-2. Standard Java EE containersComponentsThe Java EE runtime environment defines four types of components that an implementation mustsupport:• Applets are GUI applications that are executed in a web browser. They use the richSwing API to provide powerful user interfaces.• Applications are programs that are executed on a client. They are typically GUIs orbatch-processing programs that have access to all the facilities of the Java EEmiddle tier.• Web applications (made of servlets, servlet filters, web event listeners, JSP pages,and JSF) are executed in a web container and respond to HTTP requests from webclients. Servlets also support SOAP and RESTful web service endpoints. Startingwith Java EE 6, web applications can also contain EJBs Lite (more on that inChapter 6).5
Page 1: The EXPERT’s VOIce ® in Java tm
Page 4 and 5: Beginning Java EE 6 Platform with G
Page 6 and 7: Contents at a Glance■Foreword ...
Page 8 and 9: ■ CONTENTSSummary ...............
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Page 12 and 13: ■ CONTENTSStateful . ............
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Page 18 and 19: ■ CONTENTSFrom the Web to Web Ser
Page 20 and 21: About the Author■ Antonio Goncalv
Page 22 and 23: AcknowledgmentsWriting a book about
Page 24 and 25: ■ PREFACECONTENTSChapter 1 briefl
Page 27 and 28: C H A P T E R 1■ ■ ■Java EE 6
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CHAPTER 3 ■ OBJECT-RELATIONAL MAP
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C H A P T E R 4■ ■ ■Managing
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CHAPTER 4 ■ MANAGING PERSISTENT O
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C H A P T E R 5■ ■ ■Callbacks
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CHAPTER 5 ■ CALLBACKS AND LISTENE
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CHAPTER 6 ■ ENTERPRISE JAVA BEANS
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C H A P T E R 7■ ■ ■Session B
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CHAPTER 7 ■ SESSION BEANS AND THE
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C H A P T E R 8■ ■ ■Callbacks
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CHAPTER 8 ■ CALLBACKS AND INTERCE
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C H A P T E R 9■ ■ ■Transacti
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CHAPTER 9 ■ TRANSACTIONS AND SECU
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CHAPTER 10 ■ JAVASERVER FACESUnde
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CHAPTER 10 ■ JAVASERVER FACESorg.
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C H A P T E R 11■ ■ ■Pages an
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CHAPTER 11 ■ PAGES AND COMPONENTS
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CHAPTER 12 ■ PROCESSING AND NAVIG
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CHAPTER 13 ■ SENDING MESSAGESFigu
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CHAPTER 13 ■ SENDING MESSAGESJava
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CHAPTER 13 ■ SENDING MESSAGES3.0.
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CHAPTER 14 ■ SOAP WEB SERVICESFig
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CHAPTER 15 ■ RESTFUL WEB SERVICES
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