Passing values from one WebDynpro application to another WebDynpro application

...Previous

11.        Go to view context and map the node ‘EKPO_NODE’ from Component Controller Context to view context by drag and drop and then go to the layout create a table with name TABLE, give the text as ‘Item data’ in the text property of CAPTION and bind it with the node ‘EKPO_NODE’ as shown below:

12.        Now save the application and come back to our first application that is ZZ_CALLING_APPLICATION, in that create a Action in the On lead selection event of the table ‘TABLE’ as SHOW_ITEM as shown below:  

13.        Now double click on the event SHOW_ITEM and write the below code in its method ONACTIONSHOW_ITEM. 

 Reading the value of ebeln in lead selection that has to be passed
  DATA lo_nd_ekko_node TYPE REF TO if_wd_context_node.
  DATA lo_el_ekko_node TYPE REF TO if_wd_context_element.
  DATA ls_ekko_node TYPE wd_this->element_ekko_node.
  DATA lv_ebeln LIKE ls_ekko_node-ebeln.

* navigate from <CONTEXT> to <EKKO_NODE> via lead selection
  lo_nd_ekko_node = wd_context->get_child_node( name = wd_this->wdctx_ekko_node ).

* get element via lead selection
  lo_el_ekko_node = lo_nd_ekko_node->get_element(  ).

* get single attribute
  lo_el_ekko_node->get_attribute(
    EXPORTING
       name =  `EBELN`
    IMPORTING
       value = lv_ebeln ).

    DATA:
      w_url   type string,
      w_value type string.

   * Get the URL of the called application
      call method cl_wd_utilities=>construct_wd_url
        exporting
        application_name              = 'ZZ_CALLED_APPLICATION'
      importing
        out_absolute_url              = w_url.

   * make the Value type compatible that has to be passed with the URL 
  w_value = lv_ebeln.

* Attach the parameters and its value with the URL that 
* have to be passed to the 2nd application
  call method cl_http_server=>append_field_url
    exporting
      name  = 'EBELN'
      value = w_value
    changing
      url   = w_url.

* generate a popup window for the 2nd application with the above URL
  DATA lo_window_manager TYPE REF TO if_wd_window_manager.
  DATA lo_api_component  TYPE REF TO if_wd_component.
  DATA lo_window         TYPE REF TO if_wd_window.

  lo_api_component  = wd_comp_controller->wd_get_api( ).
  lo_window_manager = lo_api_component->get_window_manager( ).

  lo_window         = lo_window_manager->create_external_window(

                   url = w_url ).

  lo_window->open( ). 

14.        Now go to the Controller Initialization Method of the 2^nd application that is ‘ZZ_CALLED_APPLICATION’ and write the below piece of code in its WDDOINIT method. 

  DATA:
  lv_param type string.   

* get the value for ebeln that has been send for the 1st application
 lv_param = wdr_task=>client_window->get_parameter( 'EBELN' ).

 DATA:
   fs_ekpo type ekpo,
   t_ekpo like table of fs_ekpo.

* get the item deatils for the given ebeln
  select *
    from ekpo
    into table t_ekpo
   where ebeln eq lv_param.

  DATA lo_nd_ekpo_node TYPE REF TO if_wd_context_node.
  DATA lo_el_ekpo_node TYPE REF TO if_wd_context_element.
  DATA ls_ekpo_node TYPE wd_this->element_ekpo_node.

* navigate from <CONTEXT> to <EKPO_NODE> via lead selection
  lo_nd_ekpo_node = wd_context->get_child_node( name = wd_this- 

                                              >wdctx_ekpo_node ).

* bind the internal table of item details with the display table
  call method lo_nd_ekpo_node->bind_table
    exporting
      new_items            = t_ekpo. 

15.        Now SAVE and Activate both the Application. Test your Application after creating a WebDynpro application as shown below: 

16.        Now test the first application that is ‘ZZ_CALLING_APPLICATION’ as shown below: 

Final Output: 

Enter a date: 

Click on the button ‘Show PO’. 

Make a lead selection on any of the PO 

Window of the Second Application with the item details for the PO selected in first Application.