Titlebook: J2EE FrontEnd Technologies; A Programmer‘s Guide Lennart J?relid Book 2002 Lennart J?relid 2002 Apache.Enterprise JavaBeans.J2EE.JSP.Java.J

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Example 3: Entity EJBs for Database Integration. we developed in the first refactoring step of the old-style Web application introduced in Chapter 10 is fine for selecting data from the database back end. However, should we wish to modify or update the database content, that refactoring model can be augmented to simplify data alteration and increase flexibility.

Organization

Servlet Theoryl their work has been a benefit to the development community. A servlet represents an idea that falls into that category, vaguely bringing back memories of the old Othello game slogan, “A minute to learn, a lifetime to master.”

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Sharing Servlet Resourcesng SSI applications are identical to those of using a servlet in a Web server; you can use SSI when the resulting output should include dynamically generated output, such as the current time or a dynamically generated image.

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JavaServer Pagestoo inflexible to survive in the dynamic environment of a Web application when intimately tied to or used in generating the user interface. JavaServer Pages—JSPs for short—is a way to counter the shortcomings of servlets and bring the technology up to speed with the development process of most modern Web applications.

昆蟲(chóng)

The Apache Struts Framework Walkthroughseries of development projects. Every customer stresses that it is important to plan ahead, develop for reusability, create a robust system that will withstand changes of requirements and specifications—and, of course, be buzzword compliant.

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Example 1: Centralizing Exchange Ratese all data is collected to business and aggregate objects, according to the instructions of the user for the particular task. The back end also hides various complexities that are associated with moving data to and from legacy data sources. Chapters 9 through 11 demonstrate three different scenarios where EJBs are used:

Dysarthria

Integrating with the Business Tier enterprise information systems (EIS) and laundered in a business logic tier. Most industrial-grade Web applications are designed according to the J2EE paradigm; they therefore require support from both enterprise JavaBeans (EJB)—which contain the business logic—and from large databases that constitute the EIS tier.

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ts that various linguistic processes can be successfully assessed with AER techniques. However, few studies have attempted to investigate how the various linguistic elements such as phonology and semantics interact to produce differences in the AER. Chomsky & Halle (1968) have proposed a serial proc