Error in accessing attributes of a declarative component in BackinBeanScope

Question

Hello,
I'm using JDeveloper 11.1.1.4.0.
For pagination we have created a declarative component. It's bean when in request scope works fine when the dec.comp. is used in page only once.
In order to use it multiple times in the same page, I changed the scope to BackingBeanScope. It works fine the first time bean's method gets called. However on the next request, I'm getting NullPointerException when it tries to access the dec. comp's attribute.
Why am I getting this error and how to correct it?
As an alternative, we can store the attribute value received first time in a hidden form field and retrieve it every subsequent time. But this would be my last alternative.
Appreciate a reason and a better way to resolve this.
Regards,
Amar

Answer 1

Hi,
Yes. The bean is declared in the dec. comp.
Following is the code in my bean's c'tor:
FacesContext fc                    = FacesContext.getCurrentInstance();
ELContext elctx                    = fc.getELContext();
ExpressionFactory elFactory    = fc.getApplication().getExpressionFactory();
ValueExpression valueExpr      = elFactory.createValueExpression(elctx, "#{component}", UIXDeclarativeComponent.class);
UIXDeclarativeComponent currDeclarativeComp            = (UIXDeclarativeComponent)   valueExpr.getValue(elctx);
String currVOObjectName                                         = currDeclarativeComp.getAttributes().get("VOObject").toString();"VOObject" is the attribute name for the dec. comp. It's getting correct value the first time. Every subsequent time,the last line throws null pointer exception.
Regards,
Amar