获取ＳＡＰ系统集成类的继承关系

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*& Report  ZGETCONTROLLIST                                             *
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*&---------------------------------------------------------------------*
*&                                                                     *
*&                                                                     *
*&---------------------------------------------------------------------*

REPORT  zget_class_list LINE-SIZE 132  NO STANDARD PAGE HEADING .
type-pools: slis.
TABLES: vseoextend.
TYPES: BEGIN OF tyclass,
        clsname LIKE vseoextend-clsname,
        refclsname LIKE vseoextend-refclsname,
        descript LIKE seoclasstx-descript,
  END OF tyclass,
  BEGIN OF twclass.
INCLUDE TYPE tyclass.
TYPES: parentnum(20) TYPE c,
END OF twclass,
ttwclass TYPE TABLE OF twclass.
DATA: fieldtab TYPE slis_t_fieldcat_alv.
DATA: twclass1 TYPE ttwclass.
DATA: twclass2 LIKE twclass1.
DATA: twclass3 LIKE twclass1.
DATA: twclass1_wa LIKE LINE OF twclass1.
data: twclass2_wa like twclass1_wa.

DATA: yclass TYPE tyclass.
DATA:  x TYPE i, y TYPE i, l TYPE i, n TYPE i.
DATA: isub TYPE i.
DATA: iparentnum(2) TYPE c.

PARAMETERS p_cname LIKE vseoextend-clsname OBLIGATORY
   default 'CL_GUI_OBJECT'.
PARAMETERS p_check TYPE c AS CHECKBOX.

DEFINE new_grid.
  y = sy-linno.
  y = y + 2.
  skip to line y.
  x = sy-colno.
  position x.
  write '|'.
END-OF-DEFINITION.

DEFINE write_grid.
  x = sy-colno.
  y = sy-linno.
  position x.
  write:  &1, '|'.
  l = sy-colno - x + 1.
  x = x - 2.
  y = y + 1.
  skip to line y.
  position x.
  uline at x(l).
  y = y - 1.
  x = sy-colno.
  skip to line y.
  position x.
END-OF-DEFINITION.

START-OF-SELECTION.
  SELECT a~clsname b~descript
    INTO CORRESPONDING FIELDS OF yclass
    FROM seoclass AS a
      INNER JOIN seoclasstx AS b
      ON a~clsname = b~clsname AND b~langu = sy-langu
    WHERE a~clsname = p_cname.
    isub = isub + 1.
    IF isub > 99.
      CONTINUE.
    ENDIF.
    MOVE-CORRESPONDING yclass TO twclass1_wa.
    PERFORM get_parentnum USING isub CHANGING iparentnum.
    twclass1_wa-parentnum = iparentnum.
    APPEND twclass1_wa TO twclass1.
  ENDSELECT.

  twclass2[] = twclass1[].
  DESCRIBE TABLE twclass2 LINES n.
  WHILE n > 0.
    LOOP AT twclass2 into twclass2_wa.
      isub = 0.
      SELECT a~clsname a~refclsname b~descript
        INTO CORRESPONDING FIELDS OF yclass
        FROM vseoextend AS a
          INNER JOIN seoclasstx AS b
          ON a~clsname = b~clsname AND b~langu = sy-langu
        WHERE a~refclsname = twclass2_wa-clsname.
        isub = isub + 1.
        IF isub > 99.
          CONTINUE.
        ENDIF.
        MOVE-CORRESPONDING yclass TO twclass1_wa.
        PERFORM get_parentnum USING isub CHANGING iparentnum.
        CONCATENATE twclass2_wa-parentnum iparentnum
          into twclass1_wa-parentnum.
        APPEND twclass1_wa TO twclass1.
        APPEND twclass1_wa TO twclass3.
      ENDSELECT.
    ENDLOOP.
    refresh twclass2.
    twclass2[] = twclass3[].
    refresh twclass3.
    DESCRIBE TABLE twclass2 LINES n.
  ENDWHILE.

  SORT twclass1 BY parentnum.
  PERFORM initialize_fieldcat USING fieldtab[].
  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
    EXPORTING
      it_fieldcat              = fieldtab
    TABLES
      t_outtab                 = twclass1.

*  LOOP AT twclass1 INTO twclass1_wa.
*    new_grid.
*    write_grid: twclass1_wa-clsname,
*                twclass1_wa-parentnum,
*                twclass1_wa-descript.
*  ENDLOOP.
*  y = sy-linno.
*  y = y + 2.
*  SKIP TO LINE y.
*  x = sy-colno.
*  POSITION x.
*  WRITE: / sy-dbcnt.

TOP-OF-PAGE.
  FORMAT COLOR COL_NEGATIVE.
  ULINE AT 2.
  WRITE '|'.
  POSITION 3.
  WRITE: 'CLass Name'.
  POSITION 34.
  WRITE '|'.
  WRITE: 'Parent String'.
  POSITION 67.
  WRITE '|'.
  WRITE: 'Reference Class Name'.
  ULINE.
  y = sy-linno.
  SKIP TO LINE y.
*&---------------------------------------------------------------------*
*&      Form  Get_parentnum
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      -->P_ISUB  text
*      <--P_IPARENTNUM  text
*----------------------------------------------------------------------*
FORM get_parentnum  USING    p_isub
                    CHANGING p_iparentnum.
  DATA: iparentnum(2) TYPE c.
  WRITE p_isub TO iparentnum.
  CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
    EXPORTING
      input  = iparentnum
    IMPORTING
      output = p_iparentnum.
ENDFORM.                    " Get_parentnum

FORM initialize_fieldcat USING p_fieldtab TYPE slis_t_fieldcat_alv.
  DATA: l_fieldcat TYPE slis_fieldcat_alv.
  l_fieldcat-seltext_s = 'CLASS NAME'.
  l_fieldcat-outputlen = 30.
  l_fieldcat-fieldname  = 'CLSNAME'.
  APPEND l_fieldcat TO p_fieldtab.
  CLEAR l_fieldcat.
  l_fieldcat-seltext_s = 'CLASS NAME'.
  l_fieldcat-outputlen = 30.
  l_fieldcat-fieldname  = 'REFCLSNAME'.
  APPEND l_fieldcat TO p_fieldtab.
  CLEAR l_fieldcat.
  l_fieldcat-seltext_s = 'DESCRIPTION'.
  l_fieldcat-outputlen = 60.
  l_fieldcat-fieldname  = 'DESCRIPT'.
  APPEND l_fieldcat TO p_fieldtab.
  CLEAR l_fieldcat.
  l_fieldcat-seltext_s = 'TREENUM'.
  l_fieldcat-outputlen = 20.
  l_fieldcat-fieldname  = 'PARENTNUM'.
  APPEND l_fieldcat TO p_fieldtab.
ENDFORM.                               " INITIALIZE_FIELDCATORD