AdfFacesContext.getCurrentInstance().getPageFlowScope().put() Issues

Question

Hi,
I have a bounded task flow and have defined a bean (UserDetails) defined in it.
Now in a class, I create a new object of the bean and use the following to put the object in the page flow scope:
AdfFacesContext.getCurrentInstance().getPageFlowScope().put("UserDetails",userDetails);
When I run the code, I get a null pointer exception at AdfFacesContext.getCurrentInstance().getPageFlowScope();
Can you please give an idea so as to how to put the object in the page flow scope?
There is something that I am doing wrong. Can you please point that out to me?
Regards,
Sud.

Answer 1

Thanks for the reply.
I run the java code and from there I call AdfFacesContext.getCurrentInstance().getPageFlowScope().put().
By the way John, I a populating a jspx page(with af:selectOneChoice and f:selectItems) with data that is fetched after a web service call.
The data is a Map, which actually contains values that are an arraylist.
So in order to populate this array list of questions, I created a bean with attributes, something like this:
This fetches the array list from the map.
List<QuestionBean> questionSet = null;
QuestionBean questionBean = null;
while (itt.hasNext()) {
questionSet = new ArrayList<QuestionBean>();
Map.Entry p = (Map.Entry)itt.next();
System.out.println(p.getKey() + " " + p.getValue().getClass());
ArrayList all = (ArrayList)p.getValue();
Iterator it2 = all.iterator();
while (it2.hasNext()) {
questionBean = new QuestionBean();
FoxChallengeQuestion question = (FoxChallengeQuestion)it2.next();
questionBean.setQuestion(question.getQuestion());
questionBean.setQuestionId(question.getQuestionId());
System.out.println("Question : " + questionBean.getQuestion());
questionSet.add(questionBean);
systemQuestions.add(questionSet);
Now in the bean "ChallangeQuestionsSetBeans ", I put each arraylist in an attribute questions5
private List<SelectItem> questions5;
List<QuestionBean> questionSet5 = systemQuestions.get(4);
this.questions5 = new ArrayList<SelectItem>();
for(QuestionBean bean : questionSet5) {
item = new SelectItem();
item.setLabel(bean.getQuestion());
item.setValue(bean.getQuestionId());
questions5.add(item);
I have set this bean ChallangeQuestionsSetBeans in the page flow scope, and used the following expression in the jspx to populate the values of the array list in the page:
<af:selectOneChoice label="Security Question 5" value="#{pageFlowScope.ChallengeQuestionSetBean.selectedQuestion5}" id="selectOneChoice5">
<f:selectItems value="#{pageFlowScope.ChallengeQuestionSetBean.questions5}" id="selectItem13"/>
</af:selectOneChoice>
I can see the values in the array list in the back end.
but when the jspx page executes, I do not see the values populating.
In the task flow, the above mentioned activities are called as a method and from the method call initialized the bean ChallangeQuestionsSetBeans
Where exactly am I going wrong. Is the task flow re-initializing the bean ChallangeQuestionsSetBeans while the jspx is rendered?
Please let me know if any other information is required.
Regards,
Sud.