ABAP Select data from SAP table IREINTOBJLVL3VH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IREINTOBJLVL3VH 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 IREINTOBJLVL3VH. 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 IREINTOBJLVL3VH 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_IREINTOBJLVL3VH TYPE STANDARD TABLE OF IREINTOBJLVL3VH,
      WA_IREINTOBJLVL3VH TYPE IREINTOBJLVL3VH,
      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: <IREINTOBJLVL3VH> TYPE IREINTOBJLVL3VH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IREINTOBJLVL3VH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IREINTOBJLVL3VH
  INTO TABLE IT_IREINTOBJLVL3VH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IREINTOBJLVL3VH
*  INTO TABLE @DATA(IT_IREINTOBJLVL3VH2).
*--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_IREINTOBJLVL3VH INDEX 1 INTO DATA(WA_IREINTOBJLVL3VH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IREINTOBJLVL3VH ASSIGNING <IREINTOBJLVL3VH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IREINTOBJLVL3VH>-MANDT = 1.
<IREINTOBJLVL3VH>-INTERNALREALESTATENUMBERLVL3 = 1.
<IREINTOBJLVL3VH>-REINTEGRATIONOBJECTTYPE = 1.
<IREINTOBJLVL3VH>-RESPACEGROUPUSAGETYPE = 1.
<IREINTOBJLVL3VH>-RESPACEGRPENABLEUSETYPE = 1.

ENDLOOP.

LOOP AT IT_IREINTOBJLVL3VH INTO WA_IREINTOBJLVL3VH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IREINTOBJLVL3VH-REINTEGOBJSPACEGROUPTYPE, sy-vline,
  WA_IREINTOBJLVL3VH-REINTEGRATIONOBJECTNUMBER, sy-vline,
  WA_IREINTOBJLVL3VH-REINTEGRATIONOBJECTNAME, sy-vline,
  WA_IREINTOBJLVL3VH-REINTEGOBJECTLONGNAME, sy-vline,
  WA_IREINTOBJLVL3VH-REPARENTINTEGOBJECTTYPE, sy-vline,
  WA_IREINTOBJLVL3VH-REPARENTINTEGOBJECTEXTERNALID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IREINTOBJLVL3VH 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_IREINTOBJLVL3VH 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_IREINTOBJLVL3VH INTO WA_IREINTOBJLVL3VH.


*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 REINTEGRATIONOBJECTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IREINTOBJLVL3VH-REINTEGRATIONOBJECTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREINTOBJLVL3VH-REINTEGRATIONOBJECTNUMBER.
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_IREINTOBJLVL3VH_STR, 
MANDT TYPE STRING,
INTERNALREALESTATENUMBERLVL3 TYPE STRING,
REINTEGRATIONOBJECTTYPE TYPE STRING,
RESPACEGROUPUSAGETYPE TYPE STRING,
RESPACEGRPENABLEUSETYPE TYPE STRING,
REINTEGOBJSPACEGROUPTYPE TYPE STRING,
REINTEGRATIONOBJECTNUMBER TYPE STRING,
REINTEGRATIONOBJECTNAME TYPE STRING,
REINTEGOBJECTLONGNAME TYPE STRING,
REPARENTINTEGOBJECTTYPE TYPE STRING,
REPARENTINTEGOBJECTEXTERNALID TYPE STRING,
RESPONSIBLE TYPE STRING,
REAUTHORIZATIONGROUP TYPE STRING,
VALIDITYSTARTDATELVL3 TYPE STRING,
VALIDITYENDDATELVL3 TYPE STRING,
INTERNALREALESTATENUMBERLVL0 TYPE STRING,
REINTEGOBJECTSITENAME TYPE STRING,
REALESTATEEXTERNALIDLVL1 TYPE STRING,
INTERNALREALESTATENUMBERLVL1 TYPE STRING,
REINTEGOBJECTBUILDINGNAME TYPE STRING,
REINTEGOBJECTLANDNAME TYPE STRING,
REALESTATEEXTERNALIDLVL2 TYPE STRING,
INTERNALREALESTATENUMBERLVL2 TYPE STRING,
REINTEGOBJECTFLOORNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IREINTOBJLVL3VH_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_IREINTOBJLVL3VH_STR-MANDT sy-vline 
WA_IREINTOBJLVL3VH_STR-INTERNALREALESTATENUMBERLVL3 sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGRATIONOBJECTTYPE sy-vline 
WA_IREINTOBJLVL3VH_STR-RESPACEGROUPUSAGETYPE sy-vline 
WA_IREINTOBJLVL3VH_STR-RESPACEGRPENABLEUSETYPE sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGOBJSPACEGROUPTYPE sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGRATIONOBJECTNUMBER sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGRATIONOBJECTNAME sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGOBJECTLONGNAME sy-vline 
WA_IREINTOBJLVL3VH_STR-REPARENTINTEGOBJECTTYPE sy-vline 
WA_IREINTOBJLVL3VH_STR-REPARENTINTEGOBJECTEXTERNALID sy-vline 
WA_IREINTOBJLVL3VH_STR-RESPONSIBLE sy-vline 
WA_IREINTOBJLVL3VH_STR-REAUTHORIZATIONGROUP sy-vline 
WA_IREINTOBJLVL3VH_STR-VALIDITYSTARTDATELVL3 sy-vline 
WA_IREINTOBJLVL3VH_STR-VALIDITYENDDATELVL3 sy-vline 
WA_IREINTOBJLVL3VH_STR-INTERNALREALESTATENUMBERLVL0 sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGOBJECTSITENAME sy-vline 
WA_IREINTOBJLVL3VH_STR-REALESTATEEXTERNALIDLVL1 sy-vline 
WA_IREINTOBJLVL3VH_STR-INTERNALREALESTATENUMBERLVL1 sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGOBJECTBUILDINGNAME sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGOBJECTLANDNAME sy-vline 
WA_IREINTOBJLVL3VH_STR-REALESTATEEXTERNALIDLVL2 sy-vline 
WA_IREINTOBJLVL3VH_STR-INTERNALREALESTATENUMBERLVL2 sy-vline 
WA_IREINTOBJLVL3VH_STR-REINTEGOBJECTFLOORNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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