PPR event in poplist

Question

Hi,
My requirement is like this,
From dropdown list, the approvers will be able to select “Vehicle Specific” or “Other”.
1.     If the approver selects “Vehicle Specific” then they will be required to enter VIN and Customer #. Work Order number entry will be optional.
2.     If the approver selects “Other” then they will able to, but not required to, enter VIN, Customer # and Work Order number.
To implement this I have created two regions 1) VehicleSpecificRN and 2)OtherRN
1.     If the approver selects “Vehicle Specific” then VehicleSpecificRN will display
2.     If the approver selects “Other” then OtherRN will display.
I am getting nullpointerexception while selecting the values in the dropdownlist. 1st time selection is working but 2nd time its giving error.
The CO and AM code is given below,
In CO
========
public void processRequest(OAPageContext pageContext, OAWebBean webBean) {
super.processRequest(pageContext, webBean);
// Initialize the application properties VO for PPR.
OAApplicationModule am = pageContext.getApplicationModule(webBean);
am.invokeMethod("init");
public void processFormRequest(OAPageContext pageContext,
OAWebBean webBean) {
super.processFormRequest(pageContext, webBean);
OAApplicationModule am = pageContext.getApplicationModule(webBean);
if ("selectInfo".equals(pageContext.getParameter(OAWebBeanConstants.EVENT_PARAM))) {
// The Position poplist PPR change event has fired.
String info = pageContext.getParameter("Info");
System.out.println("info in CO before : " + info);
Serializable[] params = { info };
am.invokeMethod("handleSelectInfoEvent", params);
System.out.println("info in called after: " + info);
In AM,
========
public void init()
OAViewObject appPropsVO = (OAViewObject)findViewObject("VehiclePVO1");
OARow row = (OARow)appPropsVO.first();
if (appPropsVO != null)
if (appPropsVO.getFetchedRowCount() == 0)
// Setting the match fetch si
appPropsVO.setMaxFetchSize(0);
appPropsVO.executeQuery();
appPropsVO.insertRow(appPropsVO.createRow());
row = (OARow)appPropsVO.first();
row.setAttribute("RowKey", new Number(1));
} // end init()
public void handleSelectInfoEvent(String info )
OAViewObject reportPVO = (OAViewObject)findViewObject("VehiclePVO1");
OARow row = null;
if (reportPVO != null) {
if (reportPVO.getFetchedRowCount() == 0) {
reportPVO.setMaxFetchSize(0);
reportPVO.executeQuery();
reportPVO.insertRow(reportPVO.createRow());
row = (OARow)reportPVO.first();
row.setAttribute("RowKey", new Number(1));
System.out.println("info in AM: "+info);
if ("Vehicle Specific".equals(info)) {
System.out.println("111111111111111111111111");
row.setAttribute("VehicleSpecific", Boolean.TRUE);
row.setAttribute("others", Boolean.FALSE);
System.out.println("22222222222222222222");
} else if ("Other".equals(info)){
System.out.println("33333333333333333");
row.setAttribute("others", Boolean.TRUE);
row.setAttribute("VehicleSpecific", Boolean.FALSE);
System.out.println("44444444444444444444444");
I couldn't able to figure out what is the exact problem and why I m getting NullPointerException.
Please help me out in this.
Thanks & Regards,
Sunita

Answer 1

will u plz message me ur error stack message. So that i figure out.... ur error..
I have gone through your code... I think there is error with ur PFR.. while collecting Poplist value..
String info = pageContext.getParameter("Info");
System.out.println("info in CO before : " + info);
what u can do i get the current value of the info poplist by using.. ur
Row row = vo.getCurrentRow(); // this vo will be your View Instance Name attached with your poplist
row.getAttribute("AttributeName");//BC4J view Attribute Name attached with your poplist
I think this will help u out... if not then send me ur Error stack List.