ABAP Select data from SAP table PCVDIROBJLINK into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PCVDIROBJLINK 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 PCVDIROBJLINK. 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 PCVDIROBJLINK 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_PCVDIROBJLINK TYPE STANDARD TABLE OF PCVDIROBJLINK,
      WA_PCVDIROBJLINK TYPE PCVDIROBJLINK,
      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: <PCVDIROBJLINK> TYPE PCVDIROBJLINK.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCVDIROBJLINK
*  INTO TABLE @DATA(IT_PCVDIROBJLINK2).
*--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_PCVDIROBJLINK INDEX 1 INTO DATA(WA_PCVDIROBJLINK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCVDIROBJLINK>-MANDT = 1.
<PCVDIROBJLINK>-DOCUMENTTYPE = 1.
<PCVDIROBJLINK>-DOCUMENTINFORECORD = 1.
<PCVDIROBJLINK>-DOCUMENTVERSION = 1.
<PCVDIROBJLINK>-DOCUMENTPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCVDIROBJLINK-LINKEDSAPOBJECT, sy-vline,
  WA_PCVDIROBJLINK-DOCOBJECTLINKCOUNTER, sy-vline,
  WA_PCVDIROBJLINK-LINKEDSAPOBJECTKEY, sy-vline,
  WA_PCVDIROBJLINK-DOCINFORECDLINKSTATUS, sy-vline,
  WA_PCVDIROBJLINK-DOCINFORECDOBJECTLINKSTATUS, sy-vline,
  WA_PCVDIROBJLINK-OBJECTTYPEDATABASETABLE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCVDIROBJLINK 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_PCVDIROBJLINK 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_PCVDIROBJLINK INTO WA_PCVDIROBJLINK.


*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 DOCUMENTINFORECORD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCVDIROBJLINK-DOCUMENTINFORECORD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCVDIROBJLINK-DOCUMENTINFORECORD.
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_PCVDIROBJLINK_STR, 
MANDT TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCUMENTINFORECORD TYPE STRING,
DOCUMENTVERSION TYPE STRING,
DOCUMENTPART TYPE STRING,
LINKEDSAPOBJECT TYPE STRING,
DOCOBJECTLINKCOUNTER TYPE STRING,
LINKEDSAPOBJECTKEY TYPE STRING,
DOCINFORECDLINKSTATUS TYPE STRING,
DOCINFORECDOBJECTLINKSTATUS TYPE STRING,
OBJECTTYPEDATABASETABLE TYPE STRING,
DOCINFORECDADDITIONALOBJECTKEY TYPE STRING,
DOCLINKDIRECTIONISACTIVE TYPE STRING,
ISDEFAULTDOCUMENT TYPE STRING,
DOCINFORECDISDELETED TYPE STRING,
DOCINFORECDLONGTEXTUUID TYPE STRING,
DOCUMENTISCREATEDBYCAD TYPE STRING,
DOCINFORECDCONFIGNMGMTFIXED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCVDIROBJLINK_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_PCVDIROBJLINK_STR-MANDT sy-vline 
WA_PCVDIROBJLINK_STR-DOCUMENTTYPE sy-vline 
WA_PCVDIROBJLINK_STR-DOCUMENTINFORECORD sy-vline 
WA_PCVDIROBJLINK_STR-DOCUMENTVERSION sy-vline 
WA_PCVDIROBJLINK_STR-DOCUMENTPART sy-vline 
WA_PCVDIROBJLINK_STR-LINKEDSAPOBJECT sy-vline 
WA_PCVDIROBJLINK_STR-DOCOBJECTLINKCOUNTER sy-vline 
WA_PCVDIROBJLINK_STR-LINKEDSAPOBJECTKEY sy-vline 
WA_PCVDIROBJLINK_STR-DOCINFORECDLINKSTATUS sy-vline 
WA_PCVDIROBJLINK_STR-DOCINFORECDOBJECTLINKSTATUS sy-vline 
WA_PCVDIROBJLINK_STR-OBJECTTYPEDATABASETABLE sy-vline 
WA_PCVDIROBJLINK_STR-DOCINFORECDADDITIONALOBJECTKEY sy-vline 
WA_PCVDIROBJLINK_STR-DOCLINKDIRECTIONISACTIVE sy-vline 
WA_PCVDIROBJLINK_STR-ISDEFAULTDOCUMENT sy-vline 
WA_PCVDIROBJLINK_STR-DOCINFORECDISDELETED sy-vline 
WA_PCVDIROBJLINK_STR-DOCINFORECDLONGTEXTUUID sy-vline 
WA_PCVDIROBJLINK_STR-DOCUMENTISCREATEDBYCAD sy-vline 
WA_PCVDIROBJLINK_STR-DOCINFORECDCONFIGNMGMTFIXED sy-vline      INTO ld_text SEPARATED BY SPACE.

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