Calling RFCs in Java WebDynpro

Question

Hello Experts,
I'm new to WebDynpro. I'm a novice at best and have just learned the basics. I'll probably be asking a lot of questions about this soon. Here is one problem I recently encountered:
I managed to call RFCs from R/3 using a user input and then another one by using one field retrieved from the first called RFC. Now i have to call a BAPI recursively from the data I got from the 2nd RFC that I called.
Here is the code so far:
public void executeBapi_Network_Getdetail_Input( )
    //@@begin executeBapi_Network_Getdetail_Input()
    //$$begin Service Controller(246259973)
    IWDMessageManager manager = wdComponentAPI.getMessageManager();
    try
      BigDecimal plannedCost = new BigDecimal(0);
       for (int i=0; i<wdContext.nodeZps_Fm_Get_Network_Num_Input().nodeNetworks().nodeEx_Networks().size(); i++) {
          wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Network(false);
          wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Network_Activity(true);
          wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Relation(true);
          wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Activity_Element(true);
          wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Activity_Milestone(true);
          wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Component(true);
          wdContext.currentBapi_Network_Getdetail_InputElement().setNumber(
            wdContext.nodeZps_Fm_Get_Network_Num_Input().nodeNetworks().nodeEx_Networks().getEx_NetworksElementAt(i).getAufnr());
          wdContext.currentBapi_Network_Getdetail_InputElement().modelObject().execute();
          wdContext.nodeNetworkDetails().invalidate();
          plannedCost.add(wdContext.nodeBapi_Network_Getdetail_Input().nodeNetworkDetails().nodeE_Network().getE_NetworkElementAt(i).getPlanned_Cost());
sorry if this is totally wrong. I'm totally a newbie here.
Hoping for your kind and helpful responses.
Cheers,
Alfonso

Answer 1

Hi Alfonso,
Can you please try this code:
       IWDMessageManager manager = wdComponentAPI.getMessageManager();
         try
           BigDecimal plannedCost = new BigDecimal(0);
           // Initializing a IWDNode to make code more readable and clean
           IWDNode nodeEx_Networks = wdContext.nodeZps_Fm_Get_Network_Num_Input().nodeNetworks().nodeEx_Networks();
           // I have initialized the int variable because you should never calculate the size() in for loop.
           // It is major performance hit.
           int size = nodeEx_Networks.size();
           for (int i=0; i<size; i++) {
               wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Network(false);
               wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Network_Activity(true);
               wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Relation(true);
               wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Activity_Element(true);
               wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Activity_Milestone(true);
               wdContext.currentBapi_Network_Getdetail_InputElement().setI_Without_Component(true);
               wdContext.currentBapi_Network_Getdetail_InputElement().setNumber(nodeEx_Networks.getEx_NetworksElementAt(i).getAufnr());
               wdContext.currentBapi_Network_Getdetail_InputElement().modelObject().execute();
               // WHY IS THIS INVALIDATE DONE.. WHICH IS THIS NODE???
               wdContext.nodeNetworkDetails().invalidate();
            IWDNode nodeE_Network = wdContext.nodeBapi_Network_Getdetail_Input().nodeNetworkDetails().nodeE_Network();
              int sizeNetwork_Getdetail = nodeE_Network.size();
              for (int i = 0; i < sizeNetwork_Getdetail; i++) {
                   plannedCost.add(nodeE_Network.getE_NetworkElementAt(i).getPlanned_Cost());
              // Now you can check the plannedCost by printing it using the manager you have initialized above.
I hope this solves your issue. If you have any further issue please revert back.
Thanks and Regards
Pravesh