How to deliver a paramter to the viewobject with jsf

Question

I use hr schema to learn adf bc component.but i want to use jsf #{param.region} to get the parameter from the urls and deliver it to the viewobject and last show the list table on the jsf page
in the viewoject xml
sql :
select a,b,c,d...　from xxxview where region =: para_region
and parmeters:
parameter para_region
and next how to operate the jdeveloper or write some code ?
I'm a beginner .thanks.

Answer 1

It is not clear what do you want to do?
You would use #{param.region} if you want to display the query string param in your jsf like <af:outputText value="#{param.region}"/>.
Do you want to get the query string value in the backing bean and set this value in VO where clause?
To pass a value to your vo where clause:
  DCIteratorBinding  iter = (DCIteratorBinding)bindings.get("yourVOIterator");
  ViewObject vo =  iterter.getViewObject();
  vo.setNamedWhereClauseParam("whereparam", value);
  vo.executeQuery();