BackingBeanScope new instance on showPopup

Question

Hi together,
I have the following problem:
A button opens a popup. In this popup the user can enter some data and if he press a partial submit button this data is written to a backing bean scope managed bean.
The problem is that each time the popup is open, a new instance of the bean is created.
Dummy Snipplet:
<af:outputText value="#{backingBeanScope.DummyBean.theValue}"/>
<af:commandButton partialSubmit="true" immediate="true" ....
                              <af:showPopupBehavior popupId="mEditPp"
                                                    align="afterEnd"
                                                    alignId="dc_cb2"/>
</af:commandButton>
<af:popup id="mEditPp" contentDelivery="lazyUncached">
      <af:dialog id="dc_d2" type="none" ....
<af:inputText value="#{backingBeanScope.DummyBean.theValue}"/>
<af:commandButton text="Apply" blocking="true" immediate="false"/>
</af:popup>The funny thing is that sometimes is working sometimes is not. I presume that the reason is that on dialog is a different instance of this bean.
Can someone tell me why this behaivour? or how to prevent this.
ps: I can only use backingBean scope.
Thank you,
Bogdan

Answer 1

Hi,
backing bean scope has the length of a request. If you set the popup content refresh to lazy then it is loaded deferred but also may use many requests for this. Each then would create / dismiss an instance of the bean. If the bean is supposed to carry state for you then this cannot be in a backing bean. Though you said you must have backing bean scope, the solution is to put the information that you need to keep the state for in a managed bean in a longer scope (e.g. viewScope) and access this bean then from the bean in managed bean scope.
Frank