ABAP CLASS-METHODS Statement syntax, information and example SAP source code

CLASS-METHODS

Short Reference

ABAP Syntax:

General Static Methods

1 CLASS-METHODS meth
[IMPORTING parameters [PREFERRED PARAMETER p]]
[EXPORTING parameters ]
[CHANGING parameters ]
[{RAISING exc1|RESUMABLE(exc1) exc2|RESUMABLE(exc2) ...}
|{EXCEPTIONS exc1 exc2 ...}].

Functional Static Methods

2 CLASS-METHODS meth
[IMPORTING parameters [PREFERRED PARAMETER p]]
[EXPORTING parameters ]
[CHANGING parameters ]
RETURNING VALUE(r) typing
[{RAISING exc1|RESUMABLE(exc1) exc2|RESUMABLE(exc2) ...}
|{EXCEPTIONS exc1 exc2 ...}].

Static Constructors

3 CLASS-METHODS class_constructor.

Event Handlers

4 CLASS-METHODS meth
FOR EVENT evt OF {class|intf}
[IMPORTING p1 p2 ... [sender]].

What does it do? The CLASS-METHODS statement declares a static method meth . For the name
meth , the naming conventions apply.
With the class component selector ( = ), static methods can be used independently of objects. In static methods, the static components of the class or its superclasses can be accessed only if the component selector is not used.
Using the variants of the CLASS-METHODS statement, different types of method declaration are possible:
General Static Methods
The most general form of the CLASS-METHODS statement allows static methods to be defined with any number of input and output parameters.

Functional Static Methods
Functional methods have exactly one return value and any number of formal parameters.

Static Constructors
Static constructors are methods with the predefined name
class_constructor , which are automatically called before their class is first used. Static constructors have no parameter interface.

Static Event Handlers
Static event handlers are static methods that are called by an event of a class or an interface. The only possible formal parameters of an event handler are input parameters, which have been defined as the output parameters of the event.
Latest notes: Like all static components in the inheritance , the static methods of a superclass exist in all subclasses. A static method is always executed in the class in which it was declared. A static method which is visible from outside can be called using the class component selector , as can all names and classes in which it exists. The class in which it was declared is always the one that is addressed. This has an influence on the execution of the
static constructor or on the event handlers .

Documentation extract taken from SAP system, � Copyright SAP AG. All rights reserved