Iterator VS Rowset

Question

My Jdev version is 11.1.1.6.0
I have exectuded the below code in my manage bean :
DCIteratorBinding VOIter = ADFUtil.findIterator("GEOptionHmNameVO1");
        ViewObjectImpl geOptionHmNameVO = getAm().getGEOptionHmNameVO1();
        geOptionHmNameVO.setApplyViewCriteriaName("GEOptionHmNameVOCriteriaByName");
        geOptionHmNameVO.setNamedWhereClauseParam("bindName", valueChangeEvent.getNewValue());
        geOptionHmNameVO.executeQuery();
     RowSet rowset= geOptionHmNameVO.getRowSet();  //This Row set has value .
RowsetIterator itr =vacancyVOIter.getrRowSetIterator(); //itr has no rows.
When I use rowset to get the value from vo i am getting rows but when i try to get the rows from the iterator which is created in executables section in pageBinding for the VO I find now rows .
Can anyone explain possible reason and what shld be done to get the data from the defined iterator.
Thanks
Soumya

Answer 1

Linda,
I have found out a perfect way for this. Let me know if you find any mistake in this .
In GEOptionHmNameVOImpl class which extends ViewObjectImpl i have written a method
public RowSet executeVCbyName(String name){
        this.setApplyViewCriteriaName("GEOptionHmNameVOCriteriaByName");
       this.setBindName(name);
       this.executeQuery();
return this;
I have exposed this method to my dataControl and added this as methodInvoke in the bindings of the jsff page .
In the manage Bean i have written the following code
BindingContainer bindingContainer = this.getBindings();
OperationBinding operationBinding = bindingContainer.getOperationBinding("executeVCbyName");
Map operationsParamsMap = operationBinding.getParamsMap();
operationsParamsMap.put("name", value);  // passing dynamic value to the parameter
RowSet rowSet = (RowSet)operationBinding.execute();
DCIteratorBinding VOIter = ADFUtil.findIterator("GEOptionHmNameVO1");
RowsetIterator itr =VOIter .getrRowSetIterator(); //itr has no rows.
*Note now I have tested that both rowSet and itr has the rows returned from the execution of VC. I can iterate each row with Row interface class now .