How to update ADF VO object to refresh the data in ADF Pivot table

Question

I need to know how to update the View object so that the date in pivot table is refreshed/updated/filtered.
here are the steps I performed to create ADF pivot table application using VO at design time.
1) created a collection in a Data Control (ViewObject in an ApplicationModule) that provides the values I wanted to use for row and column labels as well the cell values (Used the SQL query)
2) Dragged this collection to the page in which wanted to create the pivot table
3) In the pivot table data binding editor specified the characteristics of the rows (which attribute(s) should be displayed in header), the columns (likewise) and the cells.
Now, I have a requirement to update/filter the data in pivot table on click of check box and my question is how to I update the View object so that the date in pivot table is refreshed/updated/filtered.
I have got this solution from one of the contact in which a WHERE clause on an underlying VO is updated based upon input from a Slider control. In essence, the value of the control is sent to a backing bean, and then the backing bean uses this input to call the "filterVO" method on the corresponding AppModule:
but, I'm getting "operationBinding" object as NULL in following code. Please let me know what's wrong.
here is the code
Our slider component will look like
<af:selectBooleanCheckbox label="Unit" value="#{PivotTableBean.dataValue}"
autoSubmit="true" />
The setDataValue() method in the backing bean will get a handle to AM and will execute the "filterVO" method in that, which takes the NumberRange as the input parameter.
public void setDataValue(boolean value) {
DataValue = value;
BindingContainer bindings = getBindings();
OperationBinding operationBinding = (OperationBinding)bindings.getOperationBinding("filterVO");
Object result = operationBinding.execute();
The filterVO method in the AMImpl.java will get the true or false and set the where Clause for the VO query to show values.
public void filterVO(boolean value) {
if (value != null) {
ViewObjectImpl ibVO = getVO1();
ibVO.setWhereClause("PRODUCT_TOTAL_REVENUE(+) where rownum < 10");
ibVO.executeQuery();
}

Answer 1

Did you define a filterVO action in your pagedef.xml file?
You might want to read on how to access service method from a JSF Web Application in the ADF Developer Guide for 10.1.3 chapter 8.5