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ARTICLE
Inheritance Events The example demonstrates the behavior of inheritance events.
ABAP_SOURCE_CODE ABAP_EXEC
ABAP_DESCRIPTION In a c1 superclass, a static event ce1 and an instance event ie1 are declared. The superclass c1, and its subclass c2, and its subclass c3, each contain a static method and an instance method to trigger events. In the c4 class, event handlers are declared in c2 for the events inherited from c1. The main method of the event_demo class registers events and calls all methods which can trigger events, whereby different possibilities are used to address the methods. The output displays an 'X' after the method call for a handled event.
The event handler cm4, declared for the c2 class, can only handle events which are triggered in this class or in its subclasses. Events which are triggered by the static method cm1 in c1, are not handled, irrelevant of the class name which is specified for the call (also refer to Inheritance and Static Components).
The event handler im4, declared for the c2 class, can also only handle events which are triggered in this class or in its subclasses. Unlike when calling static methods, the class of the object is always addressed when addressing an object using an object reference, and triggered events in the inherited method im1 of the c2 and c3 classes are handled.
