ABAP Select data from SAP table VIF_RUNTIME_ADAPTER_STRUCTURE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VIF_RUNTIME_ADAPTER_STRUCTURE
*  INTO TABLE @DATA(IT_VIF_RUNTIME_ADAPTER_STRUCTURE2).
*--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_VIF_RUNTIME_ADAPTER_STRUCTURE INDEX 1 INTO DATA(WA_VIF_RUNTIME_ADAPTER_STRUCTURE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VIF_RUNTIME_ADAPTER_STRUCTURE>-FUNCTION_NAMESPACE = 1.
<VIF_RUNTIME_ADAPTER_STRUCTURE>-FUNCTION = 1.
<VIF_RUNTIME_ADAPTER_STRUCTURE>-FUNCTION_XMLNAME_REQUEST = 1.
<VIF_RUNTIME_ADAPTER_STRUCTURE>-FUNCTION_XMLNAME_RESPONSE = 1.
<VIF_RUNTIME_ADAPTER_STRUCTURE>-FUNCTION_EXPOSED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VIF_RUNTIME_ADAPTER_STRUCTURE-PARAMETER_NAMESPACE, sy-vline,
  WA_VIF_RUNTIME_ADAPTER_STRUCTURE-PARAMETER, sy-vline,
  WA_VIF_RUNTIME_ADAPTER_STRUCTURE-PARAMETER_XMLNAME, sy-vline,
  WA_VIF_RUNTIME_ADAPTER_STRUCTURE-PARAMETER_TYPE, sy-vline,
  WA_VIF_RUNTIME_ADAPTER_STRUCTURE-PARAMETER_IS_HEADER, sy-vline,
  WA_VIF_RUNTIME_ADAPTER_STRUCTURE-PARAMETER_IS_EXPOSED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VIF_RUNTIME_ADAPTER_STRUCTURE 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_VIF_RUNTIME_ADAPTER_STRUCTURE 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_VIF_RUNTIME_ADAPTER_STRUCTURE INTO WA_VIF_RUNTIME_ADAPTER_STRUCTURE.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_VIF_RUNTIME_ADAPTER_STRUCTURE_STR, 
FUNCTION_NAMESPACE TYPE STRING,
FUNCTION TYPE STRING,
FUNCTION_XMLNAME_REQUEST TYPE STRING,
FUNCTION_XMLNAME_RESPONSE TYPE STRING,
FUNCTION_EXPOSED TYPE STRING,
PARAMETER_NAMESPACE TYPE STRING,
PARAMETER TYPE STRING,
PARAMETER_XMLNAME TYPE STRING,
PARAMETER_TYPE TYPE STRING,
PARAMETER_IS_HEADER TYPE STRING,
PARAMETER_IS_EXPOSED TYPE STRING,
PARAMETER_IS_OPTIONAL TYPE STRING,
PARAMETER_DEFAULT_VALUE TYPE STRING,
PARAMETER_IS_INITIAL TYPE STRING,
FAULT TYPE STRING,
FAULT_XMLNAME TYPE STRING,
FAULT_DETAIL TYPE STRING,
FAULT_DESCRIPTION_ID TYPE STRING,
ID TYPE STRING,
TYPE_NAMESPACE TYPE STRING,
TYPENAME TYPE STRING,
TYPENAME_XMLNAME TYPE STRING,
ORGINAL_TYPE TYPE STRING,
TYPETYPE TYPE STRING,
FIELDNAME TYPE STRING,
FIELD_IS_EXPOSED TYPE STRING,
FIELDNAME_XMLNAME TYPE STRING,
FIELD_FIXED_VALUE TYPE STRING,
FIELD_IS_INITIAL TYPE STRING,
CHILD_ID TYPE STRING,
KIND TYPE STRING,
BUILD_IN_TYPE TYPE STRING,
LENGTH TYPE STRING,
DECIMALS TYPE STRING,
SIGNED TYPE STRING,
TAB_ITEMLABEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VIF_RUNTIME_ADAPTER_STRUCTURE_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_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FUNCTION_NAMESPACE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FUNCTION sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FUNCTION_XMLNAME_REQUEST sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FUNCTION_XMLNAME_RESPONSE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FUNCTION_EXPOSED sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER_NAMESPACE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER_XMLNAME sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER_TYPE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER_IS_HEADER sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER_IS_EXPOSED sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER_IS_OPTIONAL sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER_DEFAULT_VALUE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-PARAMETER_IS_INITIAL sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FAULT sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FAULT_XMLNAME sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FAULT_DETAIL sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FAULT_DESCRIPTION_ID sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-ID sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-TYPE_NAMESPACE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-TYPENAME sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-TYPENAME_XMLNAME sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-ORGINAL_TYPE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-TYPETYPE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FIELDNAME sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FIELD_IS_EXPOSED sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FIELDNAME_XMLNAME sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FIELD_FIXED_VALUE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-FIELD_IS_INITIAL sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-CHILD_ID sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-KIND sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-BUILD_IN_TYPE sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-LENGTH sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-DECIMALS sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-SIGNED sy-vline 
WA_VIF_RUNTIME_ADAPTER_STRUCTURE_STR-TAB_ITEMLABEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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