How to read the data from a filtered table in SAP Web Dynpro ABAP

[ramakrishnappa]

Hi welcome !!!

I would like to share the code/logic of method GET_TABLE_DATA of interface IF_WD_TABLE_METHOD_HNDL which helps to read the data from a filtered Table in Web Dynpro ABAP.

I have come across few SCN threads where in the requirement for reading filtered table data is left unanswered, as the method GET_TABLE_DATA( ) is not available in interface IF_WD_TABLE_METHOD_HNDL in their systems. I think the method GET_TABLE_DATA is available from SAP_ABA 731.

So, it might be useful if the logic to read the data from a filtered table is available for all.

Pre-requisite:

Basic knowledge of Webdynpro ABAP,& OO ABAP

Create below method.

GET_TABLE_DATA( )

Parameters: IO_TBL Importing type ref to CL_WD_TABLE RT_DATA Returning WDR_TABLE_ROW_DATA_TAB METHOD get_table_data . DATA elements         TYPE wdr_context_element_set.   DATA element          TYPE REF TO if_wd_context_element.   DATA row_data         TYPE wdr_table_row_data.   DATA last_row_index   TYPE i.   DATA first_row_index  TYPE i.   DATA wd_row_arrangement_type_id TYPE guid.   DATA wd_row_arrangement         TYPE REF TO cl_wd_view_element.   DATA first_actual_row TYPE i.   DATA fixed_row_count  TYPE i.   DATA data_source      TYPE REF TO if_wd_context_node.   DATA row_count        TYPE i.   DATA selected_elements TYPE wdr_context_element_set.   DATA first_row        TYPE i.   DATA last_row        TYPE i value -1.   CONSTANTS c_none TYPE guid VALUE ''.   CLEAR rt_data.   CLEAR selected_elements.   row_count = 0.   IF data_source IS NOT BOUND.     data_source = io_tbl->get_data_source( ).   ENDIF.   wd_row_arrangement ?= io_tbl->get_row_arrangement( ).   IF wd_row_arrangement IS NOT BOUND.     wd_row_arrangement = io_tbl->get_master_column( ).   ENDIF.   IF wd_row_arrangement IS BOUND.     wd_row_arrangement_type_id = wd_row_arrangement->_cid.   ENDIF.   fixed_row_count = io_tbl->get_row_count( ).   first_actual_row = io_tbl->get_first_actual_row( ).   CASE wd_row_arrangement_type_id.     WHEN c_none.       selected_elements = data_source->get_selected_elements( ).       IF fixed_row_count = -1.         row_count = data_source->get_element_count( ) + first_actual_row.       ELSE.         row_count = fixed_row_count.       ENDIF.       first_row_index = first_row - first_actual_row.       IF last_row = -1 OR          last_row > row_count.         last_row_index = row_count - first_actual_row.       ELSE.         last_row_index = last_row - first_actual_row.       ENDIF.       IF last_row_index >= first_row_index.         elements = data_source->get_elements( from = first_row_index to = last_row_index ).       ENDIF.       LOOP AT elements INTO element.         row_data-context_element = element.         row_data-level           = 0.         INSERT row_data INTO TABLE rt_data.       ENDLOOP.   ENDCASE. ENDMETHOD.

Let us say, we have created the above method GET_TABLE_DATA in component controller of WD component.

Please refer to the below steps to read data from a filtered table

Steps:

• Go to attributes tab of view and create an view attribute GO_TBL of type ref to CL_WD_TABLE
• Go to method WDDOMODIFYVIEW( ) and write the below logic to get the reference of table ui element "MY_TABLE"

METHOD wddomodifyview .

           IF first_time = abap_true.

               "Note: my_table is the ui name of table in view layout

               wd_this->go_tbl ?= view->get_element( 'MY_TABLE' ).

           ENDIF.

ENDMETHOD.

• Now, to read data from filtered table, use the below code

   data lt_data type WDR_TABLE_ROW_DATA_TAB.

   

            wd_comp_controller->get_table_data(

                    exporting

                         io_tbl = wd_this->go_tbl

                    receiving

                         rt_data = lt_data ).

Thank you for your time and hope content of this blog was helpful.

Your comments / Feedback / suggestions are highly appreciable & always welcome :smile: :smile: :smile: