Abap Alv Oops Interview Questions And Answers -

To enable editing, you must modify the Field Catalog ( LVC_S_FCAT ). Set the EDIT field to 'X' for the desired column. Use the method set_ready_for_input on the grid instance.

: Use the SET HANDLER statement to link your local method to the ALV instance.

While you can use LVC_FIELDCATALOG_MERGE , it is often considered best practice in OOP to build the field catalog manually or via a DDIC structure to ensure performance and prevent metadata inconsistencies. The SALV Alternative Abap Alv Oops Interview Questions And Answers

For cell-level control, add a "style table" (type LVC_T_STYL ) to your internal data structure and map it in the layout structure using STYLEFNAME . 4. What is the purpose of the check_changed_data method?

This is a common "gotcha" question. When a user types in an editable ALV, the backend internal table is not updated until the data is validated. Calling grid->check_changed_data manually triggers the validation and synchronizes the frontend grid with your backend internal table. 5. How do you refresh the ALV after data modification? To enable editing, you must modify the Field

Use the method refresh_table_display . You can pass a soft_refresh parameter (type LVC_S_STBL ) to maintain the user's current scroll position and selected rows while updating the content. Advanced Technical Patterns Field Catalog Generation

At the heart of ALV OOP is the separation of the data container and the display container. Unlike functional ALV, where the system handles the screen logic, OOP ALV requires a custom container ( CL_GUI_CUSTOM_CONTAINER ) or a docking container to sit on a screen (Dynpro). : Use the SET HANDLER statement to link

: Create a class with a method FOR EVENT double_click OF cl_gui_alv_grid .