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Lecture 14 Web Dynpro for ABAP (WD4A) BCO5647 Applications Programming Techniques (ABAP)
Readings & Objectives ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object]
Why is WD4A superior to SAP’s existing Web development options such as BSPs ,[object Object],[object Object],[object Object],[object Object]
Why is WD4A superior to SAP’s existing Web development options such as BSPs ,[object Object],[object Object],[object Object],[object Object]
Why is WD4A superior to SAP’s existing Web development options such as BSPs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Web Dynpro Component and its parts ,[object Object],[object Object],[object Object],[object Object]
Web Dynpro Component and its parts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Web Dynpro Component and its parts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Context and Data Transport ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Navigation between Views ,[object Object],[object Object]
Steps in creating a Web Dynpro Application ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Practical Example ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Lecture14 abap on line

  • 1. Lecture 14 Web Dynpro for ABAP (WD4A) BCO5647 Applications Programming Techniques (ABAP)
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Editor's Notes

  1. Web Dynpro is available both in the Java and the ABAP development environment. WD4A integrated into ECC 6 & Netweaver 4
  2. Smart Client is a term used to describe an application environment which: - delivers applications over a web http connection - does not require installation - automatically updates without user action - has the look and feel of desktop applications
  3. Requires knowledge of ABAP Objects In ABAP you can define a pop up list activated by the F4 key containing a list of available values. This is called F4 help. Implementing such functionalities in a Web Dynpro Java application either is not feasible or requires much more effort compared to Web Dynpro ABAP. The developer needs not only to write complex Java scenarios to get the desired behavior, but also to extend the ABAP back end to provide the data through remote function calls (RFCs) or Web Services.
  4. Hook Methods: Methods Called by the Runtime Each controller has a fixed number of methods that can only be called by the runtime. The application developer cannot specify when these methods are called, but can modify the implementation. The time when these methods are called is predefined. WDDOINIT is called automatically when a controller is initialized for the first time. This method is empty but can be filled with source code: ● Creating instances of help classes ● Initializing controller attributes ● Triggering authorization checks (recommended for help classes) ● Setting initial values of the controller context
  5. SAP proposes defining only a maximum of 15 views per component. Exceeding this number will lead to a noticeable performance reduction in your application.
  6. A Component Controller’s context keeps data required in the component and shared among multiple views of that component. DB table read in CC and used with view 2 possible that Airline Carrier in view 1 be displayed in view 2. More on Mapping and Data Binding next lecture
  7. Example above only has one view so no focus on component controller.
  8. SAP recommend you use the following naming conventions for Web Dynpro parts: _WDC_ Web Dynpro component Z_WDC_T335_EX1 _WDA_ Web Dynpro application Z_WDA_T335_EX1 V View name V_DISPLAY_NAME W Window name W_DISPLAY_NAME