: Use the SET HANDLER statement to link your local method to the ALV instance.
: When the user clicks, the system automatically calls your method. 3. How do you make specific cells or rows editable?
: The physical area on a screen where the grid is rendered. Critical Interview Questions and Insights Abap Alv Oops Interview Questions And Answers
Functional ALV relies on passing parameters to a function module. OOP ALV is instance-based. In OOP, you instantiate a container and then an ALV object within that container. This allows for multiple ALV grids on a single screen and finer control over event handling using methods instead of form routines.
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 : Use the SET HANDLER statement to link
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
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? How do you make specific cells or rows editable
The CL_SALV_TABLE class is often preferred for simple, read-only displays. It uses a "Factory" pattern ( cl_salv_table=>factory ). It is much faster to implement because it doesn't require a screen or container definition, but it is intentionally limited—it does not support cell-level editing without significant workarounds. Summary Table: Key Classes Class Name CL_GUI_CUSTOM_CONTAINER Binds the ALV to a specific area on a GUI screen. CL_GUI_ALV_GRID The engine that renders and manages the grid data. LVC_S_FCAT Structure for defining column attributes (Field Catalog). LVC_S_LAYO Structure for defining overall grid appearance (Layout).