How can I use a single query panel with two view criteria?

Question

Hi all,
I have a requirement to allow users to change the "display mode" on a search results tree table for an advanced search page. What this will do is change the structure of how the data is laid out. In one case the tree table is 3 levels deep, in the other case it's only 2 with different data being at the root node.
What I've done so far:
1) I exposed the data relationship for these two ways of viewing the data in the application module's data model.
2)  I created a view criteria in the two view objects that are at the root of the relationships, where (for simplicity sake) I'm only comparing a single field.
This is in one view object:
<ViewCriteria
    Name="PartsVOCriteria"
    ViewObjectName="gov.nasa.jpl.ocio.qars.model.views.PartsVO"
    Conjunction="AND">
    <Properties>... </Properties>
    <ViewCriteriaRow
      Name="vcrow23"
      UpperColumns="1">
      <ViewCriteriaItem
        Name="PartDiscrepantItemsWithIRVO"
        ViewAttribute="PartDiscrepantItemsWithIRVO"
        Operator="EXISTS"
        Conjunction="AND"
        IsNestedCriteria="true"
        Required="Optional">
        <ViewCriteria
          Name="PartDiscrepantItemsWithIRVONestedCriteria"
          ViewObjectName="gov.nasa.jpl.ocio.qars.model.views.PartDiscrepantItemsWithIRVO"
          Conjunction="AND">
          <ViewCriteriaRow
            Name="vcrow26"
            UpperColumns="1">
            <ViewCriteriaItem
              Name="InspectionRecordNumber"
              ViewAttribute="InspectionRecordNumber"
              Operator="="
              Conjunction="AND"
              Value=""
              Required="Optional"/>
          </ViewCriteriaRow>
        </ViewCriteria>
      </ViewCriteriaItem>
    </ViewCriteriaRow>
  </ViewCriteria>
and this is in the other view object:
<ViewCriteria
      Name="IRSearchCriteria"
      ViewObjectName="gov.nasa.jpl.ocio.qars.model.views.InspectionRecordVO"
      Conjunction="AND">
      <Properties>... </Properties>
      <ViewCriteriaRow
         Name="vcrow7"
         UpperColumns="1">
         <ViewCriteriaItem
            Name="InspectionRecordNumber"
            ViewAttribute="InspectionRecordNumber"
            Operator="="
            Conjunction="AND"
            Required="Optional"/>
      </ViewCriteriaRow>
   </ViewCriteria>
3) I had a query panel and tree table auto-generated by dragging the data control for ONE of the view object data relationship that's exposed in the app module. Then I created a second query panel and tree table the same way but using the data control for the other. I'm hiding one of the query panels permanently and toggling the visibility of the tree tables based on the display mode the user chooses. Both tables have separate bindings and iterators.
This is a portion of the page definition:
<executables>
    <variableIterator id="variables"/>
    <searchRegion Criteria="IRSearchCriteria"
                  Customizer="oracle.jbo.uicli.binding.JUSearchBindingCustomizer"
                  Binds="InspectionRecordVOIterator"
                  id="IRSearchCriteriaQuery"/>
    <iterator Binds="InspectionRecordVO" RangeSize="25"
              DataControl="QARS_AppModuleDataControl"
              id="InspectionRecordVOIterator" ChangeEventPolicy="ppr"/>
    <iterator Binds="Root.QARS_AppModule.PartsVO1"
              DataControl="QarsMasterAppModuleDataControl" RangeSize="25"
              id="PartsVO1Iterator"/>
    <searchRegion Criteria="PartsVOCriteria"
                  Customizer="oracle.jbo.uicli.binding.JUSearchBindingCustomizer"
                  Binds="PartsVO1Iterator" id="PartsVOCriteriaQuery"/>
  </executables>
4) I've created a custom queryListener to delegate the query event.
This is in my advanced search jsp page:
<af:query id="qryId1" headerText="Search" disclosed="true"
                  value="#{bindings.IRSearchCriteriaQuery.queryDescriptor}"
                  model="#{bindings.IRSearchCriteriaQuery.queryModel}"
                  queryListener="#{pageFlowScope.SearchBean.doSearch}"
                  queryOperationListener="#{bindings.IRSearchCriteriaQuery.processQueryOperation}"
                  resultComponentId="::resId2" maxColumns="1"
                  displayMode="compact" type="stretch"/>
This is in my backing bean:
public void doSearch(QueryEvent queryEvent) {
      String bindingName = flag
         ? "#{bindings.IRSearchCriteriaQuery.processQuery}"
         : "#{bindings.PartsVOCriteriaQuery.processQuery}";
      invokeMethodExpression(bindingName, queryEvent);
   private void invokeMethodExpression(String expr, QueryEvent queryEvent) {
      FacesContext fctx = FacesContext.getCurrentInstance();
      ELContext elContext = fctx.getELContext();
      ExpressionFactory eFactory = fctx.getApplication().getExpressionFactory();
      MethodExpression mexpr =
         eFactory.createMethodExpression(elContext, expr, Object.class, new Class[] { QueryEvent.class });
      mexpr.invoke(elContext, new Object[] { queryEvent });
When no inspection record number (the only search field so far)  is supplied in the query panel, then it behaves correctly. Namely, the tree tables shows all search results. However, when an inspection record number is supplied the tree table that was created with the query panel in use (remember there are two query panels, one of them is hidden) shows a single result (this is correct) while the other tree table (the one with the hidden query panel that isn't in use) shows all results (this is NOT correct).
Is what I'm trying to accomplish even doable? If so, what am I missing?
I'm using JDeveloper 11.1.1.7
Thanks,
Bill

Answer 1

I ended up keeping one query panel permanently visible and the other permanently hidden. When performing a search using the table that has the hidden query panel, I seed the query descriptor for the hidden query panel using the visible query panel's query descriptor and then delegate the request:
   public void doSearch(QueryEvent queryEvent) {
      String bindingName = null;
      if(isIrTableRendered()) {
         bindingName = "#{bindings.IRSearchCriteriaQuery.processQuery}";
      } else {
         seedPartsQueryDescriptor();
         bindingName = "#{bindings.PartsVOCriteriaQuery.processQuery}";
         queryEvent = new QueryEvent(partsQuery, partsQuery.getValue());
      invokeMethodExpression(bindingName, queryEvent);
   private void seedPartsQueryDescriptor() {
      ConjunctionCriterion criterion = irQuery.getValue().getConjunctionCriterion(); 
      for(Criterion criteria : criterion.getCriterionList()) {
         AttributeCriterion attributeCriteria = (AttributeCriterion)criteria;
         List values = attributeCriteria.getValues();
         String qualifiedName = attributeCriteria.getAttribute().getName();
         int indexOfDot = qualifiedName.lastIndexOf(".");
         String name = indexOfDot < 0
            ? qualifiedName
            : qualifiedName.substring(indexOfDot + 1);
         ConjunctionCriterion partsCriterion =
            partsQuery.getValue().getConjunctionCriterion();
         for (Criterion partsCriteria : partsCriterion.getCriterionList()) {
            AttributeCriterion partsAttributeCriteria =
               (AttributeCriterion) partsCriteria;
            String partsQualifiedName =
               partsAttributeCriteria.getAttribute().getName();
            if (partsQualifiedName.endsWith(name)) {
               partsAttributeCriteria.setOperator(attributeCriteria.getOperator());
               List partsValues = partsAttributeCriteria.getValues();
               partsValues.clear();
               for (int i = 0, count = values.size(); i < count; i++) {
                  partsValues.set(i, values.get(i));
   private void invokeMethodExpression(String expr, QueryEvent queryEvent) {
      FacesContext facesContext = FacesContext.getCurrentInstance();
      ELContext elContext = facesContext.getELContext();
      ExpressionFactory expressionFactory =
         facesContext.getApplication().getExpressionFactory();
      MethodExpression methodExpression =
         expressionFactory.createMethodExpression(elContext, expr, Object.class, new Class[] { QueryEvent.class });
      methodExpression.invoke(elContext, new Object[] { queryEvent });
Then when the advanced/basic button is pressed for the visible query panel, I programmatically set the same mode for the hidden query panel:
   public void handleQueryModeChange(QueryOperationEvent queryOperationEvent) {
      if(queryOperationEvent.getOperation() == QueryOperationEvent.Operation.MODE_CHANGE) {
         QueryMode queryMode = (QueryMode) irQuery.getValue().getUIHints().get(QueryDescriptor.UIHINT_MODE);
         QueryDescriptor queryDescriptor = partsQuery.getValue();
         queryDescriptor.changeMode(queryMode);
         AdfFacesContext.getCurrentInstance().addPartialTarget(partsQuery);