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.
: The primary class for creating editable, interactive grids. Abap Alv Oops Interview Questions And Answers
: The physical area on a screen where the grid is rendered. Critical Interview Questions and Insights Functional ALV relies on passing parameters to a
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 This allows for multiple ALV grids on a
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?
Events in OOP ALV are handled by creating a local controller class.