NullPointer when getting pageFlow bean from backingBean

Question

Hi,
I use JDev11g - full ADF stack.
In the backing bean of a page, I use this method :
    public QueryFilterBean getFilterBean() {
        FacesContext fc=FacesContext.getCurrentInstance();
        return (QueryFilterBean) fc.getApplication().getExpressionFactory().createValueExpression(fc.getELContext(), "#{viewScope.QueryFilterBean}", QueryFilterBean.class).getValue(fc.getELContext());   
    }to create an instance or get the current instance of a pageFlow bean. This code belongs to a backing bean that is registered in adfc-config.xml, so is the pageFlow bean. And I use faces-config.xml for navigation rules between jspx.
So the code behaves nicely on integreated weblogic. But I get a NullPointerException when deployed to our production server, when backing bean processes this code :
    public ArrayList<String> getActualWhereClauseMap() {
        if (getFilterBean() == null) System.out.print("filter bean null ;");
        if (getFilterBean().getActualWhereClauseMap() == null) System.out.print("where clause map bean null ;");
        return getFilterBean().getActualWhereClauseMap(); // NULL POINTER IS THREW HERE
    }I read that you should register pageFlow scope in task-flow definition ; but I don't use task flow.
Regards
Luc-

Answer 1

Hi,
you are not using the pageFlowScope but the view scope, which is shorter and changes with the page or view
Frank