Having issues with longMessage and back button usage

Question

Hello,
I have part of an app that consists of 2 pages. The first page is a set of checkboxes and an Analyze (submit) button. when the user hits Analyze, I commit the transaction and forward to the second page which displays the checkboxes they checked and some other information regarding those choices. If a user wants to change their answers, they use the browser's back button and change their choices, then click Analyze again. This is working fine.
I now want to add a longMessage to each checkbox above with some additional information about each choice. I've setup these up and they work fine; the dialog box launches just fine when they click the little (i) icon.
So that's the status quo; here's my problem:
Scenario
1. User clicks one of the longMessage icons
2. clears that box by clicking OK
3. then hits Analyze to progress to the second page
4. now user hits browser's Back button to go back to questions
5. PROBLEM
At this point, all my checkboxes are blank. If I try to re-check one and hit Analyze, I get an error stating "No current row for View (XXXLProcNavVO1)"
If I don't ever click a longMessage icon, everything works fine. I can only replicate this if I follow the exact steps in the scenario.
So what is wrong? Why am I losing my current row in my VO when I use the longMessage?
I've included my CO from page 1 for reference below.
Thanks!
/*===========================================================================+
| Copyright (c) 2001, 2005 Oracle Corporation, Redwood Shores, CA, USA |
| All rights reserved. |
+===========================================================================+
| HISTORY |
+===========================================================================*/
package lanl.oracle.apps.icx.por.req.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.fnd.framework.OAApplicationModule;
import oracle.apps.fnd.framework.OAException;
import oracle.apps.fnd.framework.OAViewObject;
import oracle.apps.fnd.framework.webui.OAWebBeanConstants;
import oracle.apps.fnd.framework.webui.TransactionUnitHelper;
//import oracle.apps.fnd.framework.webui.OADialogPage;
import oracle.jbo.domain.Number;
import oracle.jbo.Row;
import oracle.apps.fnd.framework.OARow;
* Controller for ...
public class LANLProcNavCO extends OAControllerImpl
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);
OAApplicationModule am = pageContext.getApplicationModule(webBean);
OAViewObject vo = (OAViewObject)am.findViewObject("XXXLProcNavVO1");
if (!pageContext.isBackNavigationFired(false))
// We indicate that we are starting the create transaction (this
// is used to ensure correct Back button behavior).
TransactionUnitHelper.startTransactionUnit(pageContext, "createProcNavForm");
// This test ensures that we don't try to create a new doc if
// we had a JVM failover, or if a recyled application module
// is activated after passivation. If these things happen, BC4J will
// be able to find the row that you created so the user can resume
// work.
if (!pageContext.isFormSubmission())
am.invokeMethod("initPVO");
String stringReqHeaderId = pageContext.getParameter("REQ_ID");
Number defaultReqHeaderId = null;
try
defaultReqHeaderId = new Number(stringReqHeaderId);
catch(Exception e)
throw new OAException("ICX", "XXXL_INVALID_NUMBER");
// set this value for subsequent form buttons pressed
vo.setWhereClauseParams(null);
vo.setWhereClauseParam(0,defaultReqHeaderId);
vo.executeQuery();
if (vo.getRowCount() == 0)
vo.insertRow(vo.createRow());
Row voRow = (Row)vo.first();
voRow.setNewRowState(Row.STATUS_INITIALIZED);
voRow.setAttribute("ReqHeaderId",defaultReqHeaderId);
OAViewObject pvo = (OAViewObject)am.findViewObject("LANL838cPVO1");
OARow prow = (OARow)pvo.first();
prow.setAttribute("lReqID",stringReqHeaderId);
* 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.processFormRequest(pageContext, webBean);
OAApplicationModule am = pageContext.getApplicationModule(webBean);
OAViewObject vo = (OAViewObject)am.findViewObject("XXXLProcNavVO1");
// Pressing the "Apply" button means the transaction should be validated
// and committed.
if (pageContext.getParameter("Analyze") != null)
// Simply telling the transaction to commit will cause all the Entity Object validation
// to fire.
// Note: there's no reason for a developer to perform a rollback. This is handled by
// the framework if errors are encountered.
am.invokeMethod("apply");
// Assuming the "commit" succeeds, navigate back to the prev page with
// and display a "Confirmation" message at the top of the page.
TransactionUnitHelper.endTransactionUnit(pageContext, "createProcNavForm");
// OAException confirmMessage = new OAException("XXXL", "XXXL_PROCNAV_CREATE_CONFIRM", null, OAException.CONFIRMATION, null);
// Per the UI guidelines, we want to add the confirmation message at the
// top of the search/results page and we want the old search criteria and
// results to display.
// pageContext.putDialogMessage(confirmMessage);
vo.clearCache();
vo.reset();
pageContext.forwardImmediately("OA.jsp?page=/lanl/oracle/apps/icx/por/req/webui/LANLSupplDocSummaryPG",
null,
OAWebBeanConstants.KEEP_MENU_CONTEXT,
null,
null,
true, // retain AM
OAWebBeanConstants.ADD_BREAD_CRUMB_NO);
else if (pageContext.getParameter("Cancel") != null)
am.invokeMethod("rollbackDoc");
// Indicate that the Create transaction is complete.
TransactionUnitHelper.endTransactionUnit(pageContext, "createProcNavForm");
pageContext.forwardImmediately("OA.jsp?page=/oracle/apps/icx/por/req/webui/ShoppingCartPG",
null,
OAWebBeanConstants.KEEP_MENU_CONTEXT,
null,
null,
true, // retain AM
OAWebBeanConstants.ADD_BREAD_CRUMB_NO);
}

Answer 1

Hi
in this scenarion control is not going inside the condition
if (vo.getRowCount() == 0) and therefore VO is not getting initialized
why u are counting the row of VO to initialize the VO ,if possible pls remove this condition check ,problem will be solved .pls let me know in case of any issues.
thanx
Pratap