Passing input data to RFC

Question

I have Date,Name and Telephone number input fields ,once user enter these values i have to pass this input to RFC.
1) I created three context attributes Date,Name,telephonenumber (both in view and Custom controller)
2)There is a mapping between view and custom attributes(Date,Name,telephonenumber)
3)i have imported model
4) I have set the RFC attributes and input attributes
public void excuteMMDtestBapi( ){
wdContext.currentContextElement().setDate(new java.sql.Date(System.currentTimeMillis()));
     //  wdContext.nodeT_Zmmdvendg().currentT_ZmmdvendgElement().setErdat( wdContext.currentContextElement().getDate());
       wdContext.nodeT_Zmmdvendg().currentT_ZmmdvendgElement().setErnam(wdContext.
          currentContextElement().getName());
        wdContext.nodeT_Zmmdvendg().currentT_ZmmdvendgElement().setPhone(wdContext.
               currentContextElement().getTelephonenumber());
5) On action of send button i am excuting the method excuteMMDtestBapi();
i am getting null pointer exception
any suggestions
Murali~

Answer 1

Hi
in CustomControllers WDInit() method
public void wdDoInit()
    //@@begin wdDoInit()
     mmdTest = new Z_Bapi_Mmd_Create_Input();
    wdContext.nodeZ_Bapi_Mmd_Create_Input().bind(mmdTest);
    //@@end
in the following method
public void excuteMMDtestBapi( )
    //@@begin excuteMMDtestBapi()
    MessageManager msgMgr =
                    (MessageManager) wdThis
                         .wdGetAPI()
                         .getComponent()
                         .getMessageManager();
wdContext.nodeT_Zmmdvendg().currentT_ZmmdvendgElement().setErdat( wdContext.currentContextElement().getDate());
       wdContext.nodeT_Zmmdvendg().currentT_ZmmdvendgElement().setErnam(wdContext.
          currentContextElement().getName());
        wdContext.nodeT_Zmmdvendg().currentT_ZmmdvendgElement().setPhone(wdContext.
               currentContextElement().getTelephonenumber());
                try {
                    this
                         .wdContext
                         .currentZ_Bapi_Mmd_Create_InputElement()
                         .modelObject()
                         .execute();
               } catch (Exception e) {
                    msgMgr.reportException("Error while executing Bapi:", true);
               wdContext.nodeOutput().invalidate();
    //@@end
I am getting null pointer exception when setting date,name and phone number
i canot set mmdTest.setPhone beacuse
I have a Bapi Z_Bapi_Mmd_Create in which parameter T_Zmmdvendg in which ERNAM,PHONE,ERDAT Ihave to set each of these values getting userinputted values from webdynpro
is there i am missing something
Regards,
Murali