文件名称:
Web Dynpro Overview
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文件大小: 1mb
下载次数: 0
上传时间: 2010-09-15
详细说明： Web Dynpro’s main goal is to enable application developers to create powerful Web applications with a minimum of effort using descriptive tools in a structured design process. The key is to describe an application – any programming will only be a very minor part of application development. It must be easy for customers and partners to customize and enhance applications. They should be easy to maintain and enhance. The applications should run on a range of devices and on various types of network – this is important for collaborat ion scenarios. Customers must also be able to personalize them. One guiding principle in the Web Dynpro philosophy is: the fewer lines of hand-written code there are in the UI, the better. Web Dynpro pursues this goal in two ways. First, Web Dynpro establishes a declarative language for specifying qualities of a user interface without writing any code. From this abstract definition, Web Dynpro generates code for a ready-to-run program skeleton of the user interface, and it also derives meta-data that a generic engine can interpret at runtime. Hand-written code still has its place, but it is reduced to a minimum. Second, it provides technical features such as support for internationalization, flicker-free interaction and a clean separation of the business logic and the user interface. To ensure this separation Web Dynpro employs the Model-View-Controller (MVC) paradigm, first implemented in Smalltalk-80. From the meta data created during the design phase, Web Dynpro is able to generate code for runtimes like J2EE and ABAP, and will also support .NET runtime. ...展开收缩
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