Connecting Web dynpro application to an SAP database

Question

Hi
Iam new to the Web dynpro
I created a proto type for this screen.
In my project ,under one of the module "std Allo" option will come.By clicking that "std allo" screen will come.
In that Create , Export buttons is there.In that, table is present consists of Allowance Code, sub code,type,level,expense type,amount fields are present.
1. After clicking create button , these elements are present.
Save and Cancel buttons are present.
allowance code - (i/p field) , sub code - (i/p field) , period Type - (Dropdown by key) ,
Type - (Checkbox group) , level - ( Dropdown by key) , expense type - ( Dropdown by key) ,
trip - ( Dropdown by key) , currency - ( Dropdown by key) ,amount - (i/p field)
2.By clicking first row in the table ,,
delete ,edit cancel buttons are present.
same elements are present which i mentioned in step 1.
To connect to the R3 database, Function module is required.Can any one help what are the specifications i need to give to the ABAP team to develop a Function module for this appluication.
Please tell me procedure.
Regards
Sushma

Answer 1

Iam trying to connect my web dynpro application to R3 Database.
Iam having list screen consistts of Create and Export buttons and table.
Table Fields :
Allowance Code , sub code ,Type , Level , expense Type , amount
After clicking  Create button ,
the screen consists of save and Cancel buttons.
Allowance Code  -- (Input Field)
Sub Code --  (Input Field)
Period Type -
(Dropdown by key)
Type -
(Radio button Group)
Level --- (Dropdown by key)
Expense Type -(Dropdown by key)
Trip - (Dropdown by key)
Currency - (Dropdown by key)
Amount --(Input Field)
In the Create screen  all these fields are present. But in the table in the List Screen it is taking only mandatory Fields.
For this our Abapers created
Fun Mod : Zup_Allowance_Input
Table     : ZMSTR_ALLOW 
Iam getting error in this code under IdataType in this "Save Button ".
Can any one help me where i went wrong in this code.or else please provide the Code for this.
public void onActionSave(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
    //@@begin onActionSave(ServerEvent)
     try{
          String str1=wdContext.currentStdAllowanceElement().getAllowanceCode();
          String str2=wdContext.currentStdAllowanceElement().getSubCode();
          IDataType dataType = wdContext.nodeStdAllowance().getNodeInfo().getAttribute("PeriodType").getDataType();
     String index=wdContext.currentStdAllowanceElement().getPeriodType();
     String str3=wdThis.getTextFromSimpleType(dataType,index);
                              wdComponentAPI.getMessageManager().reportSuccess("wetreer                "+str3);
     String arr[]={"Fixed","Actual"};
     for(int i=0;i<arr.length;i++)
IPrivateEtrecStdCreateView.ICheckElement e=wdContext.nodeCheck().createCheckElement();
wdContext.nodeCheck().addElement(e);
e.setType(arr<i>);
IDataType dataType = wdContext.nodeStdAllowance().getNodeInfo().getAttribute("").getDataType();
          String index=wdContext.currentStdAllowanceElement().getLevel();
          String str5=wdThis.getTextFromSimpleType(dataType,index);
wdComponentAPI.getMessageManager().reportSuccess("wetreer                 "+str5);
IDataType dataType = wdContext.nodeStdAllowance().getNodeInfo().getAttribute("ExpenseType").getDataType();
String index=wdContext.currentStdAllowanceElement().getExpenseType();
String str6=wdThis.getTextFromSimpleType(dataType,index);
wdComponentAPI.getMessageManager().reportSuccess("wetreer                 "+str6);
IDataType dataType = wdContext.nodeStdAllowance().getNodeInfo().getAttribute("Trip").getDataType();
String index=wdContext.currentStdAllowanceElement().getTrip();
String str7=wdThis.getTextFromSimpleType(dataType,index);
wdComponentAPI.getMessageManager().reportSuccess("wetreer                 "+str7);
IDataType datatype = wdContext.nodeStdAllowance().getNodeInfo().getAttribute("Currency").getDataType();
String index=wdContext.currentStdAllowanceElement().getCurrency();
String str8=wdThis.getTextFromSimpleType(dataType,index);
wdComponentAPI.getMessageManager().reportSuccess("wetreer                 "+str8);
String str9=wdContext.currentStdAllowanceElement().getAmount();
Zup_Allowance_Input input=new Zup_Allowance_Input();
          input.setAllow_Opt("C");
          input.setAllowance_Code(str1);
          input.setSubcode(str2);
          input.setType1(str3);
          input.setLevel1(str5);
                     input.setExpense(str6);
                     input.setCurr_Key(str8);
wdContext.nodeZup_Allowance_Input().bind(input);
wdContext.currentZup_Allowance_InputElement().modelObject().execute();
String str10=wdContext.currentOutputElement().get();
if(str10.equalsIgnoreCase("3"))
String errorMessage = "Inserted Successfully !";
IWDEventHandlerInfo windowHandler = wdControllerAPI.getViewInfo().getViewController().findInEventHandlers("OK");
IWDConfirmationDialog windowDialog = wdComponentAPI.getWindowManager().createConfirmationWindow(errorMessage, windowHandler, "OK");
windowDialog.open();
windowDialog.setWindowPosition(300,250);
}if(str10.equalsIgnoreCase("2"))
String errorMessage = "Duplicate Value !";
IWDEventHandlerInfo windowHandler = wdControllerAPI.getViewInfo().getViewController().findInEventHandlers("OK");
IWDConfirmationDialog windowDialog = wdComponentAPI.getWindowManager().createConfirmationWindow(errorMessage, windowHandler, "OK");
windowDialog.open();
windowDialog.setWindowPosition(300,250);
}catch(Exception e)
             wdComponentAPI.getMessageManager().reportSuccess(e.toString());
    //@@end
  //@@begin javadoc:onPlugFromEtrecStdView(ServerEvent)
  /** Declared validating event handler. */
  //@@end
  public void onPlugFromEtrecStdView(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
    //@@begin onPlugFromEtrecStdView(ServerEvent)
     wdContext.currentStdAllowanceElement().setAllowanceCode("");
        wdContext.currentStdAllowanceElement().setAmount("");
        wdContext.currentStdAllowanceElement().setSubCode("");
    //@@end