ABAP Keyword Documentation →  ABAP − Reference →  Processing Internal Data →  Character String and Byte String Processing →  Expressions and Functions for String Processing →  string_exp - String Expressions →  string_exp - String Templates →  Examples of string templates 

String Templates, Length

This example demonstrates how to specify a length for embedded expressions.

Other versions: 7.31 | 7.40 | 7.54

Source Code

    TYPES result TYPE STANDARD TABLE OF string WITH EMPTY KEY.

    cl_demo_output=>write(
      VALUE result(
        FOR j = 1 UNTIL j > strlen( sy-abcde )
        ( |{ substring( val = sy-abcde len = j )
             WIDTH = j + 4 }<---| ) ) ).

    cl_demo_output=>display(
      VALUE result(
        FOR j = 1 UNTIL j > strlen( sy-abcde )
        ( |{ substring( val = sy-abcde len = j )
             WIDTH = strlen( sy-abcde ) / 2 } <---| ) ) ).

Description

Two iteration expressions loops perform the built-in function substring for the system field sy-abcde in an embedded expression of a string template. The first iteration calculates the length from the length of the substring plus a fixed value. The second iteration sets the length (constantly) as half the length of the full string and is ignored for longer substring accesses.