By Raghu R. Kodali, Jonathan R. Wetherbee, Peter Zadrozny
EJB 3.0 has made large advances in ease of improvement, and its greatly simplified programming version has been generally acclaimed. precise at Java and J2EE builders either with and with no previous EJB adventure, starting EJB three software improvement takes readers throughout the info of the EJB 3.0 structure, and indicates how EJB can be utilized to advance strong, standards-based backend enterprise common sense. With 12 years of mixed EJB adventure, the authors supply many useful insights into the complete EJB structure and canopy all components of the EJB 3.0 specification, together with * entire exploration of all kinds of beans, from consultation beans to message-driven beans and entity beans * A deep examine the hot EJB three patience and object-relational mapping mechanisms * program buyer integration * trying out inside and out the EJB box * finished pattern program with built-in EJB parts * improve complications - universal matters encountered whilst migrating from EJB 2.1 to EJB 3.0With Java and SQL lower than your belt, this ebook will educate you EJB three from the floor up. It offers an entire and useful roadmap to EJB three structure and programming. And it covers improve matters that you're going to come across while migrating from EJB 2.1 to EJB 3.0, so it truly is hugely correct if you are already an EJB developer.
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Extra resources for Beginning EJB 3 Application Development: From Novice to Professional
Example text
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. Similar to complaints over having to define XML metadata to specify even the most basic bean behavior, developers found it burdensome to have to write custom interfaces to handle an enterprise bean’s factory support, and inconvenient to require a session bean’s interfaces to extend EJBspecific interfaces.
Qxd 16 8/31/06 6:44 PM Page 16 CHAPTER 1 ■ INTRODUCTION TO THE EJB 3 ARCHITECTURE Download GlassFish version 2, build 3 to the directory in which you want to install it. We have downloaded the JAR file into a directory named Software in the C: drive. Open a command prompt window and change directory to the location at which you have the downloaded GlassFish JAR file. jar Figure 1-2. Installing GlassFish This command will prompt for a license agreement dialog initially. Read the agreement, and scroll down and press the Accept button.
The SearchFacade bean implements one method, wineSearch(), which has been declared in both remote and local business interfaces. The wineSearch() method returns a static wines list based on the type of wine. Listing 2-4 shows the implementation for wineSearch(). Listing 2-4. add("Chardonnay"); } return wineList; } } Dependency Injection In Chapter 1, we introduced the concept of dependency injection as a programming design pattern. In this section, we will look into using dependency injection in stateless session beans.
