ABAP Keyword Documentation →  ABAP − Release-Specific Changes →  Changes in Release 6.10 

Type Concept in Release 6.10

1. Constants for structures and internal tables

2. New generic types for field symbols and formal parameters

3. Methods for displaying specific properties of types

4. Type objects for all friends of a class

Other versions: 7.31 | 7.40 | 7.54

Modification 1

Constants for structures and internal tables

You can now define constants for structures and internal tables, which in turn contain internal tables or references and strings. However, only the initial value is possible.

Example

types: 
  begin of STRUC, 
    ITAB type standard table of SPFLI with non-unique key CARRID, 
    MREF type ref to OBJECT, 
  end of STRUC. 

constants: 
  CONST  type STRUC value is initial. 

Modification 2

New generic types for field symbols and formal parameters

The new generic types can be used for typing field symbols and parameters in subroutines, function modules, or methods. The following table shows their respective specification:

Gen. TypTypes

Modification 3

Methods for displaying specific properties of types

The class CL_ABAP_TYPEDESCR has been extended to include the method GET_PROPERTY, which provides information on specific type properties at runtime.

Modification 4

Type objects for all friends of a class

In the class CL_ABAP_CLASSDESCR, the method GET_FRIEND_TYPES has been introduced. It allows the type objects for all friends of a class to be determined at runtime.