In this post, you will learn about handling Deep Structures in OData. We need to handle data with a hierarchy with deep structures while reading the data for the front-end applications and also while creating the data in SAP. This earlier post Handle Deep Structures using $expand was about with reading the data. This one will deal with creating the data.

The scenario considered is the same as the earlier post which also has the project creation details.

For creating / updating the data using deep strcuture, method /IWBEP/IF_MGW_APPL_SRV_RUNTIME~CREATE_DEEP_ENTITY needs to be redefined.

Here is a sample code that can be used to implement Sales Order create a scenario using a BAPI. Here, using the key VBELN for the header entity, it can be checked whether it’s a ‘create scenario’ or an ‘update scenario’, and accordingly the BAPI can be called. I have only added code with CREATE BAPI and the code for UPDATE BAPI is something that you can write if needed.

Code Reference

METHOD /iwbep/if_mgw_appl_srv_runtime~create_deep_entity.

  DATA : ls_so_all TYPE zcl_g00_jp_so_mpc_ext=>ty_so_all.

  DATA : ls_header_in TYPE bapisdhd1,
         lt_items     TYPE STANDARD TABLE OF bapisditm,
         lt_partners  TYPE STANDARD TABLE OF bapiparnr,
         lt_return    TYPE STANDARD TABLE OF bapiret2.

  io_data_provider->read_entry_data( IMPORTING es_data = ls_so_all ).

  IF ls_so_all-vbeln IS INITIAL.

    ls_header_in-doc_type = 'ZOR1'.
    ls_header_in-doc_date = ls_so_all-erdat.
    ls_header_in-created_by = ls_so_all-ernam.
    ls_header_in-currency = ls_so_all-waerk.
    ls_header_in-sales_org = ls_so_all-vkorg.
    ls_header_in-distr_chan = ls_so_all-vtweg.
    ls_header_in-division = ls_so_all-spart.

    lt_partners = VALUE #( ( partn_role = 'AG'
                             partn_numb = ls_so_all-kunnr ) ).

    lt_items = VALUE #( FOR ls_item IN ls_so_all-toitem
                        ( itm_number = ls_item-posnr
                          material   = ls_item-matnr
                          short_text = ls_item-arktx
                          target_qty = ls_item-zmeng
                          target_qu  = ls_item-meins
                          plant      = ls_item-werks
                          store_loc  = ls_item-lgort
                          ship_point = ls_item-vstel
                          route      = ls_item-route

    DATA : lv_vbeln TYPE vbak-vbeln.
        order_header_in = ls_header_in
        salesdocument   = lv_vbeln
        return          = lt_return
        order_items_in  = lt_items
        order_partners  = lt_partners.

    IF NOT line_exists( lt_return[ type = 'E' ] ).
      "Raise Exception

    ls_so_all-vbeln = lv_vbeln.

         is_data = ls_so_all
         cr_data = er_deep_entity ).

    "Update Scenario

    "Handle Business Exception
    DATA(lo_msg) = me->/iwbep/if_mgw_conv_srv_runtime~get_message_container( ).
    lo_msg->add_message( iv_msg_type   = /iwbep/cl_cos_logger=>error
                         iv_msg_id     = 'ZG00_PO'
                         iv_msg_number = '004' ).

    RAISE EXCEPTION TYPE /iwbep/cx_mgw_busi_exception
        message_container = lo_msg .

    RAISE EXCEPTION NEW /iwbep/cx_mgw_busi_exception(
        message_container = lo_msg ).



Important Code blocks

io_data_provider->read_entry_data is used to read the data from the request

The entity data updated with Sales Order Number is passed back using below code.

         is_data = ls_so_all
         cr_data = er_deep_entity ).

Usually, one project will have one deep entity, but in case there are multiple deep entities then the entity type name should be first checked using method GET_ENTITY_TYPE_NAME from IO_TECH_REQUEST_CONTEXT

Testing using Gateway Client

Observe the code. Only Header and Item data are used from the deep structure to pass data to the BAPI. So, the request payload needs to have that information.

To get the details, first execute a GET request with $expand=ToItem. Then, use the data as Request payload using the button Use as Request.

URI : /sap/opu/odata/SAP/ZG00_JP_SO_SRV/SOHeaderSet(‘109’)?$expand=ToItem&$format=json

Alternatively, below well formatted payload can also be used.

  "Vbeln" : "",
  "Erdat" : "\/Date(1660694400000)\/",
  "Erzet" : "PT02H09M41S",
  "Ernam" : "RAP50",
  "Netwr" : "4000.00",
  "Waerk" : "USD",
  "Vkorg" : "1710",
  "Vtweg" : "10",
  "Spart" : "00",
  "Kunnr" : "101",
  "ToItem" : [
      "Vbeln" : "",
      "Posnr" : "000010",
      "Matnr" : "FG1_CP",
      "Arktx" : "CP-FG Shaft with Rolling Bearings",
      "Zmeng" : "10",
      "Meins" : "PC",
      "Netwr" : "4000.00",
      "Waerk" : "USD",
      "Werks" : "1710",
      "Lgort" : "",
      "Vstel" : "1710",
      "Route" : ""

Execute the request as below.

As the sales order number is passed, it is interpreted as an Update scenario that is not implemented as per the code, and hence exception is triggered. Note that even though this is an update scenario, the method used here is POST and not PUT.

Now, remove the sales order number from the payload and execute again.

The order gets created. The result that you will get would depend on the data and configuration in your system.

This marks the end of this post.

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