COLUMN OPTIMIZE IN OOALV .

                                         COLUMN OPTIMIZE IN OOALV .

 In column optimize we basically optimise the space and table look. for this we use class
--->CL_SALV_COLUMNS_TABLE.there are 2 methods inside this class we are going to use that are as follows:
                                                   1:get_columns( ).
                                                   2:set_optimize( ).
*&---------------------------------------------------------------------*
*& Report  ZALVWITHTTOOLBAR
*&
*&---------------------------------------------------------------------*
*&
*&
*&---------------------------------------------------------------------*

REPORT  ZALVWITHTTOOLBAR.
TYPES:BEGIN OF  TY_MARA,
      MATNR TYPE MARA-MATNR,
      ERNAM TYPE MARA-ERNAM,
      END OF TY_MARA.

DATA: IT_MARA TYPE TABLE OF TY_MARA.
SELECT MATNR
       ERNAM
       FROM MARA INTO TABLE IT_MARA UP TO 20 ROWS.

DATA: OO_ALV TYPE REF TO CL_SALV_TABLE.

*TRY.
CALL METHOD CL_SALV_TABLE=>FACTORY
*  EXPORTING
*    LIST_DISPLAY   = IF_SALV_C_BOOL_SAP=>FALSE
*    R_CONTAINER    =
*    CONTAINER_NAME =
  IMPORTING
    R_SALV_TABLE   = OO_ALV
 CHANGING
    T_TABLE        = IT_MARA
    .
* CATCH CX_SALV_MSG .
*ENDTRY.

DATA: LO_FUNCTION TYPE REF TO CL_SALV_FUNCTIONS_LIST.
LO_FUNCTION  = OO_ALV->GET_FUNCTIONS( ).
LO_FUNCTION->SET_ALL( ABAP_TRUE ).
DATA:LO_DISPLAY TYPE REF TO CL_SALV_DISPLAY_SETTINGS.
LO_DISPLAY = OO_ALV->GET_DISPLAY_SETTINGS( ).
LO_DISPLAY->SET_LIST_HEADER( VALUE = ' MATERIAL DETAILS').
LO_DISPLAY->SET_STRIPED_PATTERN( VALUE = 'X').


********for optimizing the column width , we are going to use set_optimize method
data:LO_COLUMNS TYPE REF TO  CL_SALV_COLUMNS_TABLE.
LO_COLUMNS = OO_ALV->GET_COLUMNS( ).  "GETTING THE COLUMNS "
LO_COLUMNS->SET_OPTIMIZE( ).         " OPTIMIZING THE COLUMNS

OO_ALV->DISPLAY( ).