Assigning a structure by component
REPORT demo_field_symbols_assign_comp .
DATA: BEGIN OF line,
col1 TYPE i VALUE '11',
col2 TYPE i VALUE '22',
col3 TYPE i VALUE '33',
END OF line.
DATA comp(5) TYPE c VALUE 'COL3'.
FIELD-SYMBOLS: <f1> TYPE ANY, <f2> TYPE ANY, <f3> TYPE ANY.
ASSIGN line TO <f1>.
ASSIGN comp TO <f2>.
DO 3 TIMES.
ASSIGN COMPONENT sy-index OF STRUCTURE <f1> TO <f3>.
WRITE <f3>.
ENDDO.
ASSIGN COMPONENT <f2> OF STRUCTURE <f1> TO <f3>.
WRITE / <f3>.
DATA: BEGIN OF line,
col1 TYPE i VALUE '11',
col2 TYPE i VALUE '22',
col3 TYPE i VALUE '33',
END OF line.
DATA comp(5) TYPE c VALUE 'COL3'.
FIELD-SYMBOLS: <f1> TYPE ANY, <f2> TYPE ANY, <f3> TYPE ANY.
ASSIGN line TO <f1>.
ASSIGN comp TO <f2>.
DO 3 TIMES.
ASSIGN COMPONENT sy-index OF STRUCTURE <f1> TO <f3>.
WRITE <f3>.
ENDDO.
ASSIGN COMPONENT <f2> OF STRUCTURE <f1> TO <f3>.
WRITE / <f3>.
--------------------------------------------------------------------------------
Casting with field symbol type
REPORT demo_field_symbols_casting.
TYPES: BEGIN OF t_date,
year(4) TYPE n,
month(2) TYPE n,
day(2) TYPE n,
END OF t_date.
FIELD-SYMBOLS <fs> TYPE t_date.
ASSIGN sy-datum TO <fs> CASTING.
WRITE / sy-datum.
SKIP.
WRITE: / <fs>-year , / <fs>-month, / <fs>-day.
TYPES: BEGIN OF t_date,
year(4) TYPE n,
month(2) TYPE n,
day(2) TYPE n,
END OF t_date.
FIELD-SYMBOLS <fs> TYPE t_date.
ASSIGN sy-datum TO <fs> CASTING.
WRITE / sy-datum.
SKIP.
WRITE: / <fs>-year , / <fs>-month, / <fs>-day.
--------------------------------------------------------------------------------
Casting with explicit type
REPORT demo_field_symbols_casting_typ.
TYPES: BEGIN OF t_date,
year(4) TYPE n,
month(2) TYPE n,
day(2) TYPE n,
END OF t_date.
FIELD-SYMBOLS: <fs> TYPE ANY,
<f> TYPE n.
ASSIGN sy-datum TO <fs> CASTING TYPE t_date.
WRITE / sy-datum.
SKIP.
DO.
ASSIGN COMPONENT sy-index OF STRUCTURE <fs> TO <f>.
IF sy-subrc <> 0.
EXIT.
ENDIF.
WRITE / <f>.
ENDDO.
TYPES: BEGIN OF t_date,
year(4) TYPE n,
month(2) TYPE n,
day(2) TYPE n,
END OF t_date.
FIELD-SYMBOLS: <fs> TYPE ANY,
<f> TYPE n.
ASSIGN sy-datum TO <fs> CASTING TYPE t_date.
WRITE / sy-datum.
SKIP.
DO.
ASSIGN COMPONENT sy-index OF STRUCTURE <fs> TO <f>.
IF sy-subrc <> 0.
EXIT.
ENDIF.
WRITE / <f>.
ENDDO.
