dynamic columns

Former Member — Thu, 13 Sep 2007 09:30:17 GMT

hello friends,

i am using a function module to get data reagarding batch characteristics,now i get the data in a table,also the amount of data i get varies,sometimes i get only 2 records and sometimes 10.

now i want to display this data horizhontally and im using ALV to display this.

how can i dynamically change the number of columns in my alv,

i think i have to use field symbols !!!!

Re: dynamic columns

Former Member — Thu, 13 Sep 2007 09:49:42 GMT

Hello

an short example

REPORT demo_select_dynamic_columns .

DATA: itab TYPE STANDARD TABLE OF spfli,

wa LIKE LINE OF itab.

DATA: line(72) TYPE c,

list LIKE TABLE OF line(72).

line = ' CITYFROM CITYTO '.

APPEND line TO list.

SELECT DISTINCT (list)

INTO CORRESPONDING FIELDS OF TABLE itab

FROM spfli.

IF sy-subrc EQ 0.

LOOP AT itab INTO wa.

WRITE: / wa-cityfrom, wa-cityto.

ENDLOOP.

ENDIF.

By Chris

Re: dynamic columns

Former Member — Thu, 13 Sep 2007 09:51:06 GMT

Hi,

You have to build the dynamic internal table. And then you can build the field catalog based on that.

Check the following program in which it is handled dynamically,

TABLES : tadir. " table in which the obj_name field stores all the

" database table names

TYPE-POOLS : slis.

TYPES ztab LIKE dcobjdef-name .

DATA : dyntab LIKE dntab OCCURS 0 WITH HEADER LINE,

dref TYPE REF TO data,

i_fcat TYPE lvc_t_fcat ,

wa_fcat TYPE lvc_s_fcat ,

w_pgm LIKE sy-repid,

count TYPE i VALUE 0,

w_obj_name LIKE tadir-obj_name.

DATA : wa_fieldcat TYPE slis_fieldcat_alv, "ALV FIELD CATALOG TABLE

i_fieldcat TYPE slis_t_fieldcat_alv, "ALV FIELD CATALOG STRUCTURE

i_event TYPE slis_t_event, "ALV EVENT HANDLING TABLE

wa_event TYPE slis_alv_event, "ALV EVENT HANDLING STRUCT

i_listheader TYPE slis_t_listheader, "ALV LIST HEADER TABLE

wa_listheader TYPE slis_listheader, "ALV LIST HEADER STRUCT

i_layout TYPE slis_layout_alv.

FIELD-SYMBOLS :<newtab> TYPE table.

INITIALIZATION.

w_pgm = sy-repid.

****************SELECTION-SCREEN 2000

SELECTION-SCREEN BEGIN OF SCREEN 2000 AS WINDOW.

SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE tit1.

PARAMETERS: tab_name TYPE ztab . " Enter database table name

SELECTION-SCREEN END OF BLOCK b1.

SELECTION-SCREEN END OF SCREEN 2000.

***************END OF SELECTION-SCREEN 2000

tit1 = 'Enter Table Name?'.

START-OF-SELECTION.

CALL SELECTION-SCREEN 2000 STARTING AT 10 10.

PERFORM occurcheck.

*********CHECKING WHETHER THE DATABASE TABLE EXISTS

FORM occurcheck.

SELECT obj_name FROM tadir INTO w_obj_name WHERE obj_name = tab_name.

ENDSELECT.

IF sy-subrc <> 0.

MESSAGE i003."Table not found in the database .

CALL SELECTION-SCREEN 2000 STARTING AT 10 10.

PERFORM occurcheck.

ELSE.

PERFORM startprocess.

EXIT.

ENDIF.

ENDFORM.

**********GETTING THE FIELD NAMES OF THE INPUT DATABASE TABLE

FORM startprocess.

CALL FUNCTION 'NAMETAB_GET'

EXPORTING

langu = sy-langu

tabname = tab_name

TABLES

nametab = dyntab. "dntab now contains the field names

**********FILLING THE CATALOG OF NEW DYNAMIC INTERNAL TABLE

LOOP AT dyntab.

wa_fcat-fieldname = dyntab-fieldname.

wa_fcat-ref_field = dyntab-fieldname.

wa_fcat-ref_table = dyntab-tabname.

APPEND wa_fcat TO i_fcat .

ENDLOOP.

***********CREATING A POINTER (FIELD SYMBOL) TO THE INTERNAL TABLE

CALL METHOD cl_alv_table_create=>create_dynamic_table

EXPORTING

it_fieldcatalog = i_fcat

IMPORTING

ep_table = dref.

ASSIGN dref->* TO <newtab>.

SELECT * FROM (dyntab-tabname) INTO TABLE <newtab>.

**********CHECKING WHETHER DATA HAS BEEN UPLOADED.

DESCRIBE TABLE <newtab> LINES sy-tfill.

DESCRIBE TABLE <newtab> LINES count.

IF sy-tfill = 0 .

MESSAGE i001. "Internal table is not filled

ELSE.

MESSAGE i002 WITH count. "Internal table is filled

ENDIF.

****************EVENTS USED IN ALV

CALL FUNCTION 'REUSE_ALV_EVENTS_GET'

EXPORTING

i_list_type = 0 " 0-simple list, 1-hierarchial list.

IMPORTING

et_events = i_event.

SORT i_event.

READ TABLE i_event

WITH KEY name = slis_ev_top_of_page "TOP_OF_PAGE event

INTO wa_event.

IF sy-subrc = 0.

MOVE 'IAM_TOP_OF_PAGE' TO wa_event-form. "IAM_TOP_OF_PAGE will

"call subroutine automatically

MODIFY i_event FROM wa_event INDEX sy-tabix.

ENDIF.

****************DISPLAYING ALV.

CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'

EXPORTING

i_callback_program = w_pgm

i_structure_name = dyntab-tabname

it_events = i_event

TABLES

t_outtab = <newtab>.

ENDFORM.

**********FORM TOP_OF-PAGE.

******FILLING OF LIST HEADER TABLE

FORM iam_top_of_page.

CLEAR wa_listheader.

wa_listheader-typ = 'H'. "HEADING

wa_listheader-info = 'ALV CREATED DYNAMICALLY'.