How to make any select one choice attribute read only base on different att

Question

i have two select one choice attribute .one is create without binding and another one is base on data control .i do not want to write code in backing bean for making attribute read only .
Example:
<af:form id="f1">
<af:selectOneChoice label="Label 1" id="soc1"
autoSubmit="true">
<af:selectItem label="Y" value="Y" id="si3"/>
<af:selectItem label="N" value="N" id="si1"/>
</af:selectOneChoice>
<af:selectOneChoice value="#{bindings.ViewObj.inputValue}"
label="#{bindings.ViewObj.label}"
required="#{bindings.ViewObj.hints.mandatory}"
shortDesc="#{bindings.ViewObj.hints.tooltip}"
id="soc2" partialTriggers="soc1">
<f:selectItems value="#{bindings.ViewObj.items}" id="si2"/>
</af:selectOneChoice>
</af:form>
on the basis of first select one choice the second select one choice should be disable .
i know that i need to bind first select one choice to backing bean .also make auto submit true and add partialTriggers in second select one choice .
please give me hints
thanks
prateek

Answer 1

please give me any example using backing bean .for example
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:af="http://xmlns.oracle.com/adf/faces/rich">
<jsp:directive.page contentType="text/html;charset=UTF-8"/>
<f:view>
<af:document id="d1">
<af:form id="f1">
<af:selectOneChoice label="Label 1" id="soc1" binding="#{Af.l1}"
autoSubmit="true">
<af:selectItem label="A" value="1" id="si1"/>
<af:selectItem label="B" value="2" id="si2"/>
</af:selectOneChoice>
<af:selectOneChoice label="Label 2" id="soc2" disabled="#{Af.l1=='2'}"
partialTriggers="soc1">
<af:selectItem label="C" value="3" id="si3"/>
<af:selectItem label="D" value="4" id="si4"/>
</af:selectOneChoice>
</af:form>
</af:document>
</f:view>
</jsp:root>
package a;
import oracle.adf.view.rich.component.rich.input.RichSelectOneChoice;
public class A {
private RichSelectOneChoice l1;
public A() {
public void setL1(RichSelectOneChoice l1) {
this.l1 = l1;
public RichSelectOneChoice getL1() {
return l1;
is there any mistake