How to raise error message from PAI of oops ALV report

Question

Hi All,
I have a requirement to raise error message form editable oops alv . After entering the data and then press SAVE button .
Please help.
Thanks in Advance

Answer 1

HI SK,
Write a Local class (Event Handeler) to handel the events. In Editable ALV once the user enter a value, CL_GUI_ALV_GRID will raise an event called DATA_CHANGED.
1. Define and Implement a local class to handle that event.
In the implementation of this class you need to get data from imported object to an internal table, then compare the same with the ALV output table.
* Local Class to handler the events raised from the ALV Grid
CLASS LCL_EVENT_HANDLER DEFINITION.
PUBLIC SECTION.
* Method to handel EDIT event, DATA_CHANGED of CL_GUI_ALV_GRID
  METHODS : ON_DATA_CHANGE FOR EVENT DATA_CHANGED OF CL_GUI_ALV_GRID
                       IMPORTING ER_DATA_CHANGED.
ENDCLASS.
* Event handler class Implementation
CLASS LCL_EVENT_HANDLER IMPLEMENTATION.
  METHOD ON_DATA_CHANGE.
    DATA : LT_MODIFY TYPE LVC_T_MODI,
               LS_MODIFY TYPE LVC_S_MODI.
* Copying changed data into intenal table from Object
    LT_MODIFY = ER_DATA_CHANGED->MT_MOD_CELLS.
* Modifying the ouptut table with the changed values
    IF LT_MODIFY[] IS NOT INITIAL.
          *Compare the ALV Output table with LT_MODIFY
    ENDIF.
  ENDMETHOD.
ENDCLASS.
Then raise  a message on required condition in the same method.
Note: To trigger the above method, you need to set event handler before displaying ALV (before calling method SET_TABLE_FOR_FIRST_DISPLAY)
* Creating object for the Local event handler class
  CREATE OBJECT GR_HANDLER.
* Set handler (call method of Event_handler) to handler Edit event
  SET HANDLER GR_HANDLER->ON_DATA_CHANGE FOR  GR_GRID.
Regards,
Vijay