How to Hide the column in the model layer

Question

Hi,
My Jdeveloper version is 11.1.1.3.0.
We can make an attribute visible / invisble by setting Display Hints value in the Control hints tab.
I want to display the column conditionally.
Is it possible to do it dynamically in Model Level itself by Display Hints Property?
Reg,
Vini

Answer 1

Fedor,
Now also i am getting the same output.
My requirement is i have to create the viewobject as it is in BaseVO and to hide some of the columns dynamically.
In Appmod level iam doing this:
String baseVo = (new StringBuilder("sample.model.")).append(baseVoName).toString();
ViewDefImpl newView = new ViewDefImpl(ViewDefImpl.DEF_SCOPE_SESSION, "DynamicVO", baseVo );
newView.resolveDefObject();
newView.registerDefObject();
ViewObject internalDynamicVO = findViewObject("DynamicVO");
if (internalDynamicVO != null)
internalDynamicVO.remove();
getTransaction().rollback();
createViewObjectForDef("DynamicVO", newView);
ViewObject VO = findViewObject("DynamicVO");
AttributeDefImpl de = ((AttributeDefImpl) VO.findAttributeDef("FirstName"));
de.setProperty(AttributeHints.ATTRIBUTE_DISPLAY_HINT, AttributeHintsImpl.ATTRIBUTE_DISPLAY_HINT_HIDE);
//de.setProperty(de.getUIHelper().ATTRIBUTE_DISPLAY_HINT, de.getUIHelper().ATTRIBUTE_DISPLAY_HINT_HIDE);
return "DynamicVO";
and in JSPX:
<af:table rows="#{bindings.DynamicVO.rangeSize}"
fetchSize="#{bindings.DynamicVO.rangeSize}"
emptyText="#{bindings.DynamicVO.viewable ? 'No data to display.' : 'Access Denied.'}"
var="row" rowBandingInterval="0"
value="#{bindings.DynamicVO.collectionModel}"
selectedRowKeys="#{bindings.DynamicVO.collectionModel.selectedRow}"
selectionListener="#{bindings.DynamicVO.collectionModel.makeCurrent}"
rowSelection="single" id="t1">
<af:forEach items="#{bindings.DynamicVOIterator.attributeDefs}" var="def">
<af:column headerText="#{def.name}" sortable="true"
rendered="#{bindings[def.name].hints[def.name].displayHint!='Hide'}"
sortProperty="#{def.name}" id="c1">
<af:outputText value="#{row[def.name]}" id="ot1"/>
</af:column>
</af:forEach>
</af:table>
and in Pagedef:
<executables>
<variableIterator id="variables"/>
<iterator Binds="DynamicVO" DataControl="AppModuleDataControl"
id="DynamicVOIterator"/>
</executables>
<bindings>
<tree IterBinding="DynamicVOIterator" id="DynamicVO">
<nodeDefinition Name="Dummy"></nodeDefinition>
</tree>
</bindings>
but iam not getting the entire columns to be hidden.
EmpoyeeID FirstName Lastname
100 King
101 Kochhar
i firstname column to be hidden.
Reg
vini