JSF2 backing bean has a reference to another and re using request scoped properties in new requests

 // note exam id and exam text are initialized from exam backing bean which is (request scoped) and in the same time they are traveling in each request

@ManagedBean(name = "question")//Constants.QUESTION)
@RequestScoped
public class QuestionBean {






    private int examId;

    private String examText;
   
   @ManagedProperty(name="exam", value="#{exam}")
    private ExamBean exam;

// getters and setters

  @PostConstruct
        public void init() {

           examId = exam.getExamId();
           examText=exam.getExamText();
         
        }    

}

------------------------XHTML page ---------------------------------------

<?xml version="1.0"?>

<f:view
    xmlns="http://www.w3.org/1999/xhtml"
    xmlns:c="http://java.sun.com/jsp/jstl/core"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets"
>
    <h:head />
<h:body>
<h:form>

<h:panelGrid columns="2" >
Exam name <h:outputText value="#{question.examText}"  />
Exam id <h:outputText  value="#{question.examId}"  />
</h:panelGrid>

<h:inputHidden  value="#{question.examText}" />
<h:inputHidden  value="#{question.examId}" />

</h:form>
</h:body>
</f:view>