Posted: Sun Sep 02, 2007 4:38 am Post subject: Definition and a Program on ALV
Give definition and a Program on ALV.
I would say that ALV is a tool that you can use in ABAP to display data in a grid - you just call a function doing it, pass the data to it and the function itself produces a nice report with many functions (like sort by, filtler etc.)
I attach a demo program, which is perfectly prepared that you change the columns to contain what you want.
There is also another way of doing the same, using the objects.
Quote:
REPORT z_pj_test_reuse .
* A demo program for the function REUSE_ALV_LIST_DISPLAY
* Types that we need
TYPE-POOLS slis.
TYPES:
BEGIN OF ts_my_item,
* This structure represents a line of our table
* You can change this structure in any way you want,
* but do not forget : you must then modify the form show_alv_grid
* to show also the new components of this structure
m_element1 TYPE char30,
m_element2 TYPE num5,
* If there is an element in this structure for which you do not
* insert the statement "ls_fieldcat-fieldname = ..."
* then the element will not be displayed, for example this one:
m_element_not_displayed TYPE char32,
END OF ts_my_item.
TYPES : t_tab_my_item TYPE TABLE OF ts_my_item.
* After you run the program, this will be executed:
PERFORM main.
*---------------------------------------------------------------------*
* FORM main *
*---------------------------------------------------------------------*
* Main program
*---------------------------------------------------------------------*
FORM main.
DATA lt_items TYPE t_tab_my_item.
PERFORM fill_test_data USING lt_items.
PERFORM show_alv_grid USING lt_items.
ENDFORM.
*---------------------------------------------------------------------*
* FORM fill_test_data *
*---------------------------------------------------------------------*
* ........ *
*---------------------------------------------------------------------*
* --> LT_ITEMS *
*---------------------------------------------------------------------*
FORM fill_test_data CHANGING lt_items TYPE t_tab_my_item.
* Here the structure will be filled with demo data
* In reality, the structure will have different components
* (those which you need)
* And will be filled with real data
DATA ls_line TYPE LINE OF t_tab_my_item.
CLEAR lt_items.
* First line of ALV grid
ls_line-m_element1 = 'Some data'.
ls_line-m_element2 = '4444'.
ls_line-m_element_not_displayed = 'This will not be displayed'.
APPEND ls_line TO lt_items.
* second line
ls_line-m_element1 = 'Some other data'.
ls_line-m_element2 = '4445'.
APPEND ls_line TO lt_items.
* third line
ls_line-m_element1 = 'More data'.
APPEND ls_line TO lt_items.
ENDFORM.
**************************************************************
* FORM show_alv_grid
*
FORM show_alv_grid CHANGING tab_output TYPE t_tab_my_item.
DATA: it_fieldcat TYPE slis_t_fieldcat_alv,
gt_events TYPE slis_t_event,
repid LIKE sy-repid,
ls_fieldcat TYPE slis_fieldcat_alv,
it_layout TYPE slis_layout_alv.
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