Get Row reference in advanced table to set the value of custom column

Question

Hi,
I have a requirement to add a new column PHP Amount in Manage Charge page which is a entry page where all the charges are entered for a PO. This region is based on Advanced table.
As per requirement, Newly created column should populate the value of the existing column (Amount) or vice verse i.e. value entered in amount column should be set to PHP Amount column for a particular row. and the value entered in PHP amount should be stored in the custom table.
I have added the column via personalization and setting the view attribute in extended controller as this column is not the part of the database table on which the VO is based upon. Also added a  PPR event in process request function in controller. And getting the reference of the row in processForm Request's PPR event and invoking the method defined in my custom AM for getting and setting the columns values . Here i can't extend the root AM as the Page have LOV columns so i have created my custom AM and adding it dynamically in controller.
Here is the complete code
Controller Code
public void processRequest(OAPageContext oapagecontext, OAWebBean oawebbean)
           super.processRequest(oapagecontext, oawebbean);
           OAApplicationModule rootAm = oapagecontext.getApplicationModule(oawebbean);  
            OAApplicationModule nam = (OAApplicationModule)rootAm.findApplicationModule("XXIPCShipmentAMEx");
             if (nam == null)
                 nam = (OAApplicationModule)rootAm.createApplicationModule("XXIPCShipmentAMEx", "xxipc.oracle.apps.inl.workbench.server.XXIPCShipmentAMEx");
           OAAdvancedTableBean tableBean =(OAAdvancedTableBean)oawebbean.findIndexedChildRecursive("ChargeLinesAdvTable");
           OAMessageTextInputBean phpAmt =(OAMessageTextInputBean)tableBean.findIndexedChildRecursive("XXIPC_PHP_AMOUNT");
           OAViewObject ChargeLinesVO1 = (OAViewObject)rootAm.findViewObject("ChargeLinesVO1");
            phpAmt.setViewUsageName("ChargeLinesVO1");
            if (ChargeLinesVO1 != null)
                try
                  String l_att= ChargeLinesVO1.findAttributeDef("PHPAmt").toString();
                 catch(Exception exception)
                  ChargeLinesVO1.addDynamicAttribute("PHPAmt"); //Adding ViewAttribute to VO
            ChargeLinesVO1.reset();
            phpAmt.setViewAttributeName("PHPAmt");
           FirePartialAction FireActionA = new oracle.cabo.ui.action.FirePartialAction();
           FireActionA.setEvent("PPR");
           FireActionA.setUnvalidated(false);
           phpAmt.setPrimaryClientAction(FireActionA);
public void processFormRequest(OAPageContext oapagecontext, OAWebBean oawebbean)
            super.processFormRequest(oapagecontext, oawebbean);
            OAApplicationModule rootAm = oapagecontext.getApplicationModule(oawebbean);
            OAApplicationModule nam = (OAApplicationModule)rootAm.findApplicationModule("XXIPCShipmentAMEx");
            OAAdvancedTableBean tableBean =(OAAdvancedTableBean)oawebbean.findIndexedChildRecursive("ChargeLinesAdvTable");
            OAMessageTextInputBean Amt =(OAMessageTextInputBean)tableBean.findIndexedChildRecursive("Amount");
            OAViewObject ChargeLinesVO1 = (OAViewObject)rootAm.findViewObject("ChargeLinesVO1");
            String rowRef = oapagecontext.getParameter(OAWebBeanConstants.EVENT_SOURCE_ROW_REFERENCE);
            Serializable[] param ={rowRef};
          // IF PPR event bind with PHPAmount column is triggered
            if("PPR".equals(oapagecontext.getParameter("event")))
                    nam.invokeMethod("PHPAmtPPRAction",param);
          // IF changeChargeAmt event(Standard Event ) bind with Amount column is triggered
           if("changeChargeAmt".equals(oapagecontext.getParameter("event")))
              nam.invokeMethod("changeChargeAmtPPRAction",param);
Custom AM Code
public void PHPAmtPPRAction(String rowRef)
          OARow row = null;
          if (rowRef != null )
               row=(OARow)findRowByRef(rowRef);
               if(row != null)
                  Number phpAmt =(Number)row.getAttribute("PHPAmt");
                   if(phpAmt != null)
                          row.setAttribute("ChargeAmt", phpAmt);
  public void changeChargeAmtPPRAction(String rowRef)
        OARow row = null;          
          if (rowRef != null )      
             row=(OARow)findRowByRef(rowRef);
             if(row != null)
                 Number chargeAmt =(Number)row.getAttribute("ChargeAmt");                  
                 if(chargeAmt != null)                  
                         row.setAttribute("PHPAmt", chargeAmt );
I m not able to set the PHP Amount column value entered in Amount column. But i am able to set the Amount column value to PHP amount column.
I m not getting the Row Reference in case PPR event triggered in PHP Amount column . It is giving Null reference in case of PHP Amount.
I don't know what i m missing ..Can anyone help me here..
Thanks in advance
Renu

Answer 1

but using second way you will not be able to save those record in database, to save in database you have to override setter method also
Code will be like this -
    public String getBillRemarks() {
       return getSuppNmTrans(); // This is first Column Value
       // return (String) getAttributeInternal(BILLREMARKS);    }
    public void setBillRemarks(String value) {
       //Setting First Column Value in Second
       setAttributeInternal(BILLREMARKS, getSuppNmTrans());  
But i suggest you to use valueChangeListener on first field to set value in second one
Ashish