Apple WebObjects 5 Manuel d'utilisateur télécharger pdf (Page 34)

34 The Enterprise Objects Advantage

 Apple Computer, Inc. January 2002

CHAPTER 3

Enterprise Objects

The Enterprise Objects Advantage

A hallmark feature of WebObjects, especially in comparison to other solutions, is

the separation of the business logic from the datasource and the user interface. In

WebObjects, you put the business logic in the enterprise objects, as shown in Figure

3-4.

Figure 3-4 Implementing business logic in enterprise objects

Another approach (Figure 3-5) is to implement business logic in the Web or desktop

application. The WebObjects approach betters this approach in the following ways:

■ It offers greater reuse. In WebObjects, you code your business logic once, and

each application that accesses your database can use it. You don’t have to

re-code your business logic into each screen or Web page.

Relational database

WebObjects

Application

.................

Business logic

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Apple WebObjects 5 Manuel d'utilisateur Page 34