Getting error while extending controller

Question

Hi
I have a task and i have the navigation like this.
Search for a value >> get the value >> click on it >> go to the next page ( a form ) >> then validate a input field over there.
So i have decided to extend the controller to achieve that. But when i am testing it locally using JDev the error i am getting is :-
I have just written a SOP in the processFormRequest in the extending class.
  public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
    super.processFormRequest(pageContext, webBean);
      System.out.println("Inside pfr");
Error
(This developer mode error is thrown instead of being registered due to the lack of the page context object.) The OA passivation framework coding standard has been violated. Web bean properties cannot be modified in the controller processFormData or processFormRequest method. Web bean properties should be modified in the processRequest method only. An attempt to modify a web bean has been made in the following call stack: java.lang.Throwable at oracle.apps.fnd.framework.OACommonUtils.getCallStack(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.setAttributeValue(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.setAttributeValue(Unknown Source) at oracle.apps.fnd.framework.webui.beans.nav.OALinkBean.setAttributeValue(Unknown Source) at oracle.cabo.ui.beans.nav.LinkBean.setDestination(Unknown Source) at oracle.apps.fnd.framework.webui.OABreadCrumbsHelper.replaceLinkDestination(Unknown Source) at oracle.apps.fnd.framework.webui.beans.nav.OABreadCrumbsBean.replaceLinkDestination(Unknown Source) at oracle.apps.po.common.webui.ClientUtil.updateBreadCrumbUrlForSubtab(ClientUtil.java:1832) at oracle.apps.po.document.common.webui.DocumentCO.processFormRequest(DocumentCO.java:423) at oracle.apps.po.document.order.webui.OrderCO.processFormRequest(OrderCO.java:100) at xxifms.oracle.apps.po.document.order.webui.XxifmsOrderLinesTableRNCO.processFormRequest(XxifmsOrderLinesTableRNCO.java:43) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.OAPageLayoutHelper.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.beans.form.OAFormBean.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.beans.OABodyBean.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest(Unknown Source) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(Unknown Source) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(Unknown Source) at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(Unknown Source) at _OA._jspService(_OA.java:71) at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:59) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:462) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:594) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:518) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:713) at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:370) at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:871) at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:453) at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221) at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:122) at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:111) at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260) at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303) at java.lang.Thread.run(Thread.java:595)
Please Help.
Thanks in Advance.
Chinmay.

Answer 1

Hi keerthi,
Thanks for the reply.
The requirement is like this. I have to validate a field Quantity against decimal values.
Navigation is like this
TRE PURCHASING BUYER >> ORDER >> INCOMPLETE ORDER >> SEARCH >> Put values in search page >> get the values from there >> click on it >> UPDATE >> LINES >> FORM >> VALIDATE Quantity FIELD THERE.
My approach is - for the particular page i have to see the PersonalizePage and get the Document Name out of there.
The AboutPage  will show all the controller involved with the particular input field Number.
Then have to see that xml file in the JDev and then extend the controller.
Now for the time being i have written nothing after extending the controller.
package xxifms.oracle.apps.po.document.order.webui;
import oracle.apps.fnd.common.VersionInfo;
import oracle.apps.fnd.framework.webui.OAControllerImpl;
import oracle.apps.fnd.framework.webui.OAPageContext;
import oracle.apps.fnd.framework.webui.beans.OAWebBean;
import oracle.apps.po.document.order.webui.OrderCO;
* Controller for ...
public class XxifmsOrderLinesTableRNCO extends OrderCO
  public static final String RCS_ID="$Header$";
  public static final boolean RCS_ID_RECORDED =
        VersionInfo.recordClassVersion(RCS_ID, "%packagename%");
   * Layout and page setup logic for a region.
   * @param pageContext the current OA page context
   * @param webBean the web bean corresponding to the region
  public void processRequest(OAPageContext pageContext, OAWebBean webBean)
    super.processRequest(pageContext, webBean);
    System.out.println("Inside pr");
   * Procedure to handle form submissions for form elements in
   * a region.
   * @param pageContext the current OA page context
   * @param webBean the web bean corresponding to the region
  public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
super.processRequest(pageContext, webBean);
    System.out.println("Inside pfr");   
But again a  problem is when i look at About Page. i find multiple Numbers of Quantity there and
so cannot track which one is the one pointing my input field and thus cannot conclude which controller and view objects are associated with it.
    Controller                         ViewObject
OrderLinesTableRNCO             PoLinesMergeVO
OrderShipmentsTableRNCO            PoLineLocationsMergeVO
OrderTopOUTotalCO               PoLineLocationsMergeVO
So i don't know is there any problem of controller extend with the error or the error is independent of controller extension.
As far i know if we have to validate a input field we can write the logic in ProcessFormRequest.
Please help.
Thanks,
Chinmay.