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ABAP Dynpro

Course Overview


Web Dynpro for ABAP or Web Dynpro for ABAP (WD4A, WDA) is the SAP standard UI technology for developing Web applications in the ABAP environment. ABAP (Advanced Business Application Programming) is a very high level programming language created by SAP. SAP's most recent development platform, NetWeaver, supports both ABAP and Java for programming SAP's Web Application Server.

Course Content


Class   

  • Accessibility of different sections of a class
  • Subclass cannot access the private component of superclass
  • External users cannot access protected/private components of a class
  • Local Class can understand data and types in the global area of the program
  • Class can be instantiated within implementation of another class
  • Deferred Definition of a Class
  • Place to put non-declarative statements
  • Use of Field Symbols in Class
  • Use of Static Attributes
  • Creation of Global class and using it in a local program

Methods   

  • Method with one import parameter/ only one non-optional parameter
  • Import parameters passed by ref. can't be changed inside the method
  • Use of PREFERRED PARAMETER in a method
  • Use of EXPORT and CHANGING parameters of a method
  • Method using Internal Table as one of the parameters
  • Use of RETURNING parameters in method
  • Demo on Static Method
  • Static methods can only use static attributes, instance methods use both
  • Method Raising Exceptions
  • Method can call itself
  • Use of ME in methods
  • Pointer Tables
  • Dynamic Method Calls
  • Use of parameter table
  • Use of Exception Table

Constructors   

  • Instance Constructors get fired at the time of class instantiation
  • Instance Constructors can have import parameters
  • Constructors cannot have any export parameters
  • Instance Constructors can raise exceptions
  • Use of static constructor
  • Static constructor can be triggered at the beginning of a processing block(form /event/block/procedure)
  • Static/Class constructors cannot have any interface

Inheritance   

  • Subclass can access public/protected components of superclass
  • Subclass can re-implement inherited methods from superclass
  • Objects cannot be created from an abstract class
  • Abstract methods cannot be implemented in abstract class
  • Final classes cannot have any subclass
  • Final methods cannot be redefined in the subclasses
  • Static attributes exist only once per inheritance tree
  • Constructors of superclass flows down the chain
  • Subclass can have enhanced constructor than its superclass
  • Static constructor of a class is called only once per program
  • Static type and Dynamic type of a variable
  • Static type should be more general than dynamic type of a reference variable
  • Method of a parent class, used from its subclass, uses attributes of the parent class only, if the method is not re-defined in subclass.
  • Demo on Widening Cast
  • Singleton Class

Interface   

  • Simple use of an interface
  • Interfaces can only be implemented in the public section of a class
  • A class with an interface should implement all the methods of that interface
  • Values for interface attributes are assigned at the time of inclusion in a class
  • Use of FINAL methods from Interface
  • Use of Abstract methods from Interface
  • Use of Interface Reference Variable
  • Use of Nested Interface
  • Using ALIASES
  • Polymorphism via Interfaces

Friendship   

  • Friendship between Classes
  • Subclasses of friends can also become friends.
  • Friendship is one sided

Events   

  • Events with Handler Method in the same class
  • Event with event handler method in different class
  • More than one event handler method can exist for same event
  • Use of static event
  • Events with export parameters

Class-Based Exceptions   

  • Using SAP provided exception class
  • When both superclass and subclass are used to track error
  • Propagation of Class-Based exceptions in procedures to the caller
  • Program can raise exceptions based on SAP standard exception - classes
  • Objects are created from exception classes when error is trapped
  • Demo on Locally Defined Exception-Class
  • Nested TRY...ENDTRY block
  • Use of CLEANUP section

Web DynPro ABAP   
Overview  
 

  • Introduction to Web Dynpro ABAP
  • Architecture
  • MVC model

Controllers   

  • Different Controllers Types
  • Controllers Lifetime
  • Web Dynpro Navigation
  • Context at Design Time
  • Controller and Context Mapping
  • BAPI usage using Service Call
  • Cardinality
  • Lead Selection
  • Supply Function

UI Elements   

  • Handling error message
  • Pop up
  • Calling an Web URL
  • Image UI element
  • Radio Button
  • Check Box
  • Drop Down By Key
  • Drop Down By Index
  • Code Wizard - Reading the node as table operation
  • Table UI Element
  • Table Popin
  • Road Map UI element
  • File Upload UI element

ALV   

  • ALV Table
  • Editable ALV
  • ALV table Events Handling
  • Select Options
    • OVS Search help
  • Freely programmed search help

Miscellaneous   

  • OTR Texts
    • Dynamic modifications at Runtime
    • Designing User Interfaces, Internationalizaton concept
    • Adobe form integration

Miscellaneous   

  • Enhancement in Webdynrpo ABAP
  • Enhancing a View
  • Enhancing a controller
  • Enhancing a component and window

Customer Reviews


Thanks to Xpertised and the tutor who walked me through all the topics with Practical exposure which is helping me in my current project.
-Waseem

Course was quite helpful in terms of understanding of concepts and practicality. Its really a very friendly environment to learn. The timing were mutually chosen, as we both are working professional. I am quite satisfied with the course.
-Tanmoy

...more
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