06 abap objects - global classes & interfaces

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ABAP Objects – Advanced-Global Classes & Interfaces


© IBM Corporation 20132 Jan-2007ABAP Objects - Advanced

ABAP Objects Advanced : Global classes and interfaces

Concept

Demonstrating How to create Global class.



Global classes and interfaces : Concept

Global classes and interfaces are created and stored in class pool and interface pool like function pool (function group).

Global classes and interfaces are managed centrally and available to every program.

Custom Global classes and interfaces must begin with Y* or Z*.

Global and local classes and interfaces have the same components, and there is no difference in how they are used within programs.



Global classes and interfaces : Concept (Contd.)

Global classes and interfaces are maintained via transaction SE24 or through transaction SE80.

Use Class Browser to view global classes and interfaces in the repository.



Global classes and interfaces : Concept (Contd.)

Set Class Browser filters to select by object type, by relation ship etc.

Results are displayed in a hierarchy tree.



Global classes and interfaces : Creating Global class

1. Go to transaction SE80 and choose Class/Interface and enter the name of your custom class or interface (name must start with Z* or Y*) and press enter.

2. In the Popup window choose yes.

3. Choose the Object type. Here Class is selected as object type.

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Global classes and interfaces : Creating Global class (Contd.)

4. In the next popup enter description and press SAVE button. Also check Usual ABAP class radio button is set

and Final check box is checked.

5. In the next popup enter package name and press save button. In our example $TMP is selected as a package.

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6. Now double click on the class, it will then display the class builder, define attributes and methods for the class.

7. Double click on the method name to implement the method. It will invoke the code editor where you have to enter code for the method.

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8. Activate the class.

9. Test the class.

10. Class components can include local

classes, methods, internal types, macros which are not visible out side the class pool.

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Types

Local class

Macros



Demonstration

Creating a Global Class using transaction SE24



Practice

Creating a Global Class using transaction SE24

06 abap objects - global classes & interfaces

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