ABAP Select data from SAP table ICL_TOUCH_MSG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICL_TOUCH_MSG table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ICL_TOUCH_MSG. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ICL_TOUCH_MSG table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ICL_TOUCH_MSG TYPE STANDARD TABLE OF ICL_TOUCH_MSG,
      WA_ICL_TOUCH_MSG TYPE ICL_TOUCH_MSG,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ICL_TOUCH_MSG> TYPE ICL_TOUCH_MSG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICL_TOUCH_MSG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICL_TOUCH_MSG
  INTO TABLE IT_ICL_TOUCH_MSG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICL_TOUCH_MSG
*  INTO TABLE @DATA(IT_ICL_TOUCH_MSG2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ICL_TOUCH_MSG INDEX 1 INTO DATA(WA_ICL_TOUCH_MSG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICL_TOUCH_MSG ASSIGNING <ICL_TOUCH_MSG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICL_TOUCH_MSG>-OBJCAT = 1.
<ICL_TOUCH_MSG>-SUBOBJCAT = 1.
<ICL_TOUCH_MSG>-CLOBJECT = 1.
<ICL_TOUCH_MSG>-MSGTY = 1.
<ICL_TOUCH_MSG>-ARBGB = 1.

ENDLOOP.

LOOP AT IT_ICL_TOUCH_MSG INTO WA_ICL_TOUCH_MSG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICL_TOUCH_MSG-TXTNR, sy-vline,
  WA_ICL_TOUCH_MSG-MSGV1, sy-vline,
  WA_ICL_TOUCH_MSG-MSGV2, sy-vline,
  WA_ICL_TOUCH_MSG-MSGV3, sy-vline,
  WA_ICL_TOUCH_MSG-MSGV4, sy-vline,
  WA_ICL_TOUCH_MSG-TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICL_TOUCH_MSG you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ICL_TOUCH_MSG TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ICL_TOUCH_MSG INTO WA_ICL_TOUCH_MSG.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field CLOBJECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICL_TOUCH_MSG-CLOBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICL_TOUCH_MSG-CLOBJECT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ICL_TOUCH_MSG_STR, 
OBJCAT TYPE STRING,
SUBOBJCAT TYPE STRING,
CLOBJECT TYPE STRING,
MSGTY TYPE STRING,
ARBGB TYPE STRING,
TXTNR TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
TEXT TYPE STRING,
TBFLD TYPE STRING,
DISP_REP TYPE STRING,
CANCEL TYPE STRING,
TEXT_EXT TYPE STRING,
STEPL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICL_TOUCH_MSG_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ICL_TOUCH_MSG_STR-OBJCAT sy-vline 
WA_ICL_TOUCH_MSG_STR-SUBOBJCAT sy-vline 
WA_ICL_TOUCH_MSG_STR-CLOBJECT sy-vline 
WA_ICL_TOUCH_MSG_STR-MSGTY sy-vline 
WA_ICL_TOUCH_MSG_STR-ARBGB sy-vline 
WA_ICL_TOUCH_MSG_STR-TXTNR sy-vline 
WA_ICL_TOUCH_MSG_STR-MSGV1 sy-vline 
WA_ICL_TOUCH_MSG_STR-MSGV2 sy-vline 
WA_ICL_TOUCH_MSG_STR-MSGV3 sy-vline 
WA_ICL_TOUCH_MSG_STR-MSGV4 sy-vline 
WA_ICL_TOUCH_MSG_STR-TEXT sy-vline 
WA_ICL_TOUCH_MSG_STR-TBFLD sy-vline 
WA_ICL_TOUCH_MSG_STR-DISP_REP sy-vline 
WA_ICL_TOUCH_MSG_STR-CANCEL sy-vline 
WA_ICL_TOUCH_MSG_STR-TEXT_EXT sy-vline 
WA_ICL_TOUCH_MSG_STR-STEPL sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.