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Author's profile photo Ramakrishnappa Gangappa

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

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 🙂 🙂 🙂

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      7 Comments
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      Author's profile photo Former Member
      Former Member

      Hi Ramakrishna,

        Can u upload the screenshots for the same process.As I am new to WebDynpro,and my requirement seems similar to the same you posted which will be a great help for me.

      Thanks In Advance.

      Author's profile photo Former Member
      Former Member

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

      Author's profile photo Ramakrishnappa Gangappa
      Ramakrishnappa Gangappa
      Blog Post Author

      Hi,

      Thanks for the update.

      Regards,

      Rama

      Author's profile photo Former Member
      Former Member

      thank you Ramakrishnappa,

      it work very well.

      bye

      Domenico

      Author's profile photo Ramakrishnappa Gangappa
      Ramakrishnappa Gangappa
      Blog Post Author

      Hi Domenico, thank you for visiting my blog.

      Glad that helped you.

      Regards.

      Rama

      Author's profile photo Former Member
      Former Member

      Hi Ramakrishnappa, how can yo see the table content instead of ->{O:16195*\CLASS=CL_WDR_CONTEXT_ELEMENT?

      Author's profile photo CHRISTOPH Nagy
      CHRISTOPH Nagy

      Hi Marcel,

      Use method GET_STATIC_ATTRIBUTE to extract the element line data into a structure.