Conversational Scope with JavaBeans

06. Mar 2008, 14:08 CET | Link Ryan McDonough

I am trying to create a Seam component which is a plain old JavaBean. I have declared the component as such:

@Name("presentationAction")
@Scope(ScopeType.CONVERSATION)
public class PresentationAction {

    @Logger
    private Log log;
    
    /**
     * The PresentationDAO is a Spring Bean using a Seam-Managed 
     * Hibernate Session
     */
    @In("#{presentationDAO}")
    public PresentationDAO presentationDAO;

    @DataModel("valueList")
    public List<PresentationValue> valueList;

    /**
     * The DataTable that the valueList is bound to
     */
    private UIDataTable valueTable;

    /**
     * The selected fund
     */
    @DataModelSelection("selectedObject")
    public PresentationValue selectedObject;
    
    /**
     * The list of fund components for the selected fund.
     */
    @DataModel("componentList")
    public List<Component<?>> componentList;

    /**
     * The selected fund component.
     */
    @DataModelSelection("componentList")
    private Component<?> selectedComponent;
...

When I run it, the first request is fine. Subsequet requests yeild the following error:

javax.el.PropertyNotFoundException: /presentation.xhtml @26,29 binding="#{presentationA 
ction.valueTable}": Target Unreachable, identifier 'presentationAction' resolved to null 
        at com.sun.

I should note that the DAO is a Spring bean which uses a Seam-Managed persistence context. I looked at chapter 7 of the new Seam in Action book and it alluded to the fact that there is something additional that needs to be taken care of with conversation-scoped JavaBean. But that was in Chapter 3 :( Any suggestions?

Ryan-