Back navigation & vo.isPreparedForExecution() trouble

Question

I have a search page and a create page implemented the same way as in the toolbox tutorial. The problem is that if the user navigates back to the search page from the create page (by the use of the browser's back button), and then clicks the create button to navigate to the create page again i get an error saying that my vo is not initialized.
The controller logic for the search page is like this:
public void processRequest(OAPageContext pageContext, OAWebBean webBean)
if (TransactionUnitHelper.isTransactionUnitInProgress(
pageContext, TRANSACTION_NAME, false))
am.invokeMethod("rollback");
TransactionUnitHelper.endTransactionUnit(pageContext, TRANSACTION_NAME);
And the controller logic for the create page is like this:
public void processRequest(OAPageContext pageContext, OAWebBean webBean)
super.processRequest(pageContext, webBean);
// Tell log we are entering our code
pageContext.writeDiagnostics(this, "processRequest.begin", OAFwkConstants.PROCEDURE);
// If we do NOT have a "duplicate post" situation
if (! pageContext.isBackNavigationFired(true))
TransactionUnitHelper.startTransactionUnit(pageContext, TRANSACTION_NAME);
if (! pageContext.isFormSubmission())
// Initialise the server side of the middle tier
initPageAm(pageContext, webBean);
// If we have a "duplicate post" situation
else
if (!TransactionUnitHelper.isTransactionUnitInProgress(
pageContext, TRANSACTION_NAME, true));
pageContext.redirectToDialogPage(new OADialogPage(NAVIGATION_ERROR));
And this is the code in the AM that causes problems :
LocationsVOImpl locationsVo = applicationModule.getLocationsVO();
if (! locationsVo.isPreparedForExecution() )
// TODO: We do not get here if user has navigated back to
// the search page with the back button, and then clicked
// create again.
locationsVo.executeQuery();
// Create a new row in the vo to hold data from the UI.
LocationsVORowImpl row = (LocationsVORowImpl) locationsVo.createRow();
locationsVo.insertRow(row);
initNewRow(row, locType);
row.setNewRowState(Row.STATUS_INITIALIZED);
The problem is that locationsVO.isPreparedForExecution does not return false after the user has navigated back to the search page and clicked the create button again..
Is there another way to implement this, or is there something else that I have forgotten? I truly believe that I have followed the guidelines and the tutorials and implemented this the right way, but ....

Answer 1

never mind, I figured this out!! Thanks!