How to dynamically create View Criteria and execute in ADF ?

This blog explains about how to create 'View Criteria' dynamically

       

  EmployeeVOImpl empVO =
                getEmployeeVO();
            ViewCriteria vc =empVO.createViewCriteria();
            ViewCriteriaRow vcRow = vc.createViewCriteriaRow();
            if(employeeID != null){
                ViewCriteriaItem vci=vcRow.ensureCriteriaItem("EmployeeId");
                vci.setValue(new Number(employeeID));
                vc.addElement(vcRow);
                empVO.appendViewCriteria(vc);
            }
            empVO.executeQuery();
            
            Row[] filterRows =
                empVO.getFilteredRows("EmployeeId", new Number(employeeID));