ABAP Keyword Documentation →  ABAP - Reference →  ABAP Syntax →  ABAP Statements →  Operands →  Data Objects in Operand Positions →  Substring Access 

Subfields

This example demonstrates how subfields can be accessed.

Other versions: 7.31 | 7.40 | 7.54

Source Code

    DATA time TYPE t VALUE '172545'.

    DATA: f1(8)  TYPE c VALUE 'ABCDEFGH',
          f2(20) TYPE c VALUE '12345678901234567890'.

    DATA: f3(8) TYPE c VALUE 'ABCDEFGH',
          f4(8) TYPE c.
    DATA: o     TYPE i VALUE 2,
          l     TYPE i VALUE 4.

    DATA: string(20) TYPE c,
          number(8)  TYPE c VALUE '123456',
          offset     TYPE i VALUE 8,
          length     TYPE i VALUE 12.

    WRITE time.
    WRITE / time+2(2).
    CLEAR time+2(4).
    WRITE / time.

    ULINE.

    f2+6(5) = f1+3(5).

    WRITE / f1.
    WRITE / f2.

    ULINE.

    MOVE f3      TO f4.      WRITE   f4.
    MOVE f3+o(l) TO f4.      WRITE / f4.
    MOVE f3      TO f4+o(l). WRITE / f4.

    CLEAR f4.
    MOVE f3      TO f4+o(l). WRITE / f4.
    MOVE f3+o(l) TO f4+o(l). WRITE / f4.

    ULINE.

    WRITE number(6) TO string+offset(length) LEFT-JUSTIFIED.
    WRITE: / string.
    CLEAR string.

    WRITE number(6) TO string+offset(length) CENTERED.
    WRITE: / string.
    CLEAR string.

    WRITE number TO string+offset(length) RIGHT-JUSTIFIED.
    WRITE: / string.
    CLEAR string.

Description

In the first part, the minutes are selected by specifying an offset in the WRITE statement. Then the minutes and seconds are set to their initial values by specifying an offset in the CLEAR statement.

In the second part, the five character sequence 78901 from the field f2 is replaced with DEFGH from f1 using offset and length specifications.

In the third part, the MOVE statement is used. First, the content of f1 is assigned to f2 without offsets. This is repeated with offsets and length specification for f1. The next three MOVE statements overwrite the contents of f2 with an offset of 2. Note, f2 is filled on the right with empty spaces, according to the conversion rules for source type c.

In part four, the WRITE TO statement is used. The first six positions of the field number are written left-justified, centered, and right-justified into the last 12 positions of the string field.