Implementing the SALESORDERITEMS_GET_ENTITYSET Method

Implement the GET_ENTITYSET method for the SalesOrderItems entity.

1. From the Class Interface screen, scroll down to the SALESORDERITEMS_GET_ENTITYSET method, place the cursor in the row, and click the Redefine button.
2. Implement the method using this code:

   method SALESORDERITEMS_GET_ENTITYSET.
   data: lt_range type table of BAPI_EPM_SO_ID_RANGE,
   ls_range type BAPI_EPM_SO_ID_RANGE,
   lv_so_id(10) type N.
   field-symbols: <fs_key> type /iwbep/s_mgw_name_value_pair.
   * limit access to SalesOrderItmes  through a navigation path or $expand option.
   if it_navigation_path is initial.
   * If it's not, raise an exception.
   RAISE EXCEPTION TYPE /iwbep/cx_mgw_busi_exception
   EXPORTING
   textid = /iwbep/cx_mgw_busi_exception=>business_error_unlimited
   message_unlimited = 'SalesOrderItems can only be accessed from
   a Sales Order navigation path or using the $expand=Items option.'.
   else.
   * There is a navigation path. Read only items for a particular SO
   * SO ID should be in it_key_tab.
   read table it_key_tab assigning <fs_key> index 1.
   lv_so_id = <fs_key>-value.
   ls_range-sign = 'I'.
   ls_range-option = 'EQ'.
   ls_range-low = lv_so_id.
   append ls_range to lt_range.
   CALL FUNCTION 'BAPI_EPM_SO_GET_LIST'
   * EXPORTING
   * MAX_ROWS =
   TABLES
   * SOHEADERDATA =
   SOITEMDATA = et_entityset
   SELPARAMSOID = lt_range
   * SELPARAMBUYERNAME =
   * SELPARAMPRODUCTID =
   * RETURN =
   .
   endif.
   endmethod.

3. Click the Activate icon.
   
   
4. If you see any warnings, recheck the code, correct any mistakes, then click Activate again.
5. Click Back to return to the Class Interface screen.